/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 23:02:28,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 23:02:28,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 23:02:28,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 23:02:28,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 23:02:28,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 23:02:28,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 23:02:28,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 23:02:28,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 23:02:28,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 23:02:28,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 23:02:28,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 23:02:28,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 23:02:28,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 23:02:28,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 23:02:28,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 23:02:28,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 23:02:28,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 23:02:28,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 23:02:28,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 23:02:28,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 23:02:28,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 23:02:28,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 23:02:28,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 23:02:28,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 23:02:28,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 23:02:28,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 23:02:28,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 23:02:28,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 23:02:28,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 23:02:28,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 23:02:28,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 23:02:28,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 23:02:28,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 23:02:28,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 23:02:28,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 23:02:28,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 23:02:28,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 23:02:28,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 23:02:28,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 23:02:28,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 23:02:28,283 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 23:02:28,307 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 23:02:28,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 23:02:28,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 23:02:28,308 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 23:02:28,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 23:02:28,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 23:02:28,308 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 23:02:28,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 23:02:28,308 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 23:02:28,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 23:02:28,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 23:02:28,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 23:02:28,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 23:02:28,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 23:02:28,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 23:02:28,310 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 23:02:28,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 23:02:28,310 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 23:02:28,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 23:02:28,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 23:02:28,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 23:02:28,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 23:02:28,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 23:02:28,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 23:02:28,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 23:02:28,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 23:02:28,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 23:02:28,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 23:02:28,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 23:02:28,312 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 23:02:28,312 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 23:02:28,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 23:02:28,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 23:02:28,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 23:02:28,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 23:02:28,524 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 23:02:28,524 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 23:02:28,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c [2022-09-20 23:02:28,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/851d3f206/07d2b59ec30947b082e8208ba8020695/FLAGef5136ffd [2022-09-20 23:02:28,929 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 23:02:28,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c [2022-09-20 23:02:28,934 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/851d3f206/07d2b59ec30947b082e8208ba8020695/FLAGef5136ffd [2022-09-20 23:02:28,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/851d3f206/07d2b59ec30947b082e8208ba8020695 [2022-09-20 23:02:28,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 23:02:28,946 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 23:02:28,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 23:02:28,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 23:02:28,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 23:02:28,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 11:02:28" (1/1) ... [2022-09-20 23:02:28,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3998ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:02:28, skipping insertion in model container [2022-09-20 23:02:28,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 11:02:28" (1/1) ... [2022-09-20 23:02:28,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 23:02:28,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 23:02:29,147 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c[4293,4306] [2022-09-20 23:02:29,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 23:02:29,158 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 23:02:29,178 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c[4293,4306] [2022-09-20 23:02:29,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 23:02:29,190 INFO L208 MainTranslator]: Completed translation [2022-09-20 23:02:29,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:02:29 WrapperNode [2022-09-20 23:02:29,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 23:02:29,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 23:02:29,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 23:02:29,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 23:02:29,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:02:29" (1/1) ... [2022-09-20 23:02:29,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:02:29" (1/1) ... [2022-09-20 23:02:29,223 INFO L138 Inliner]: procedures = 26, calls = 79, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 319 [2022-09-20 23:02:29,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 23:02:29,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 23:02:29,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 23:02:29,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 23:02:29,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:02:29" (1/1) ... [2022-09-20 23:02:29,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:02:29" (1/1) ... [2022-09-20 23:02:29,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:02:29" (1/1) ... [2022-09-20 23:02:29,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:02:29" (1/1) ... [2022-09-20 23:02:29,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:02:29" (1/1) ... [2022-09-20 23:02:29,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:02:29" (1/1) ... [2022-09-20 23:02:29,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:02:29" (1/1) ... [2022-09-20 23:02:29,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 23:02:29,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 23:02:29,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 23:02:29,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 23:02:29,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:02:29" (1/1) ... [2022-09-20 23:02:29,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 23:02:29,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:02:29,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-20 23:02:29,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-20 23:02:29,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 23:02:29,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 23:02:29,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 23:02:29,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 23:02:29,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 23:02:29,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 23:02:29,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 23:02:29,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 23:02:29,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 23:02:29,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 23:02:29,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-20 23:02:29,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-20 23:02:29,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 23:02:29,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 23:02:29,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 23:02:29,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 23:02:29,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 23:02:29,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 23:02:29,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 23:02:29,327 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 23:02:29,398 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 23:02:29,399 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 23:02:29,742 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 23:02:29,832 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 23:02:29,832 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-09-20 23:02:29,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 11:02:29 BoogieIcfgContainer [2022-09-20 23:02:29,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 23:02:29,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 23:02:29,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 23:02:29,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 23:02:29,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 11:02:28" (1/3) ... [2022-09-20 23:02:29,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590544c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 11:02:29, skipping insertion in model container [2022-09-20 23:02:29,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:02:29" (2/3) ... [2022-09-20 23:02:29,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590544c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 11:02:29, skipping insertion in model container [2022-09-20 23:02:29,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 11:02:29" (3/3) ... [2022-09-20 23:02:29,842 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2022-09-20 23:02:29,854 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 23:02:29,855 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 23:02:29,855 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 23:02:29,942 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-20 23:02:29,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 247 transitions, 526 flow [2022-09-20 23:02:30,053 INFO L130 PetriNetUnfolder]: 19/243 cut-off events. [2022-09-20 23:02:30,053 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-20 23:02:30,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 243 events. 19/243 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 118 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 204. Up to 2 conditions per place. [2022-09-20 23:02:30,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 247 transitions, 526 flow [2022-09-20 23:02:30,068 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 230 transitions, 484 flow [2022-09-20 23:02:30,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 23:02:30,079 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;@718801a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 23:02:30,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-20 23:02:30,107 INFO L130 PetriNetUnfolder]: 19/229 cut-off events. [2022-09-20 23:02:30,108 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-20 23:02:30,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:02:30,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:02:30,109 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 2 more)] === [2022-09-20 23:02:30,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:02:30,115 INFO L85 PathProgramCache]: Analyzing trace with hash 350819846, now seen corresponding path program 1 times [2022-09-20 23:02:30,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:02:30,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115828489] [2022-09-20 23:02:30,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:02:30,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:02:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:02:30,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:02:30,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:02:30,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115828489] [2022-09-20 23:02:30,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115828489] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:02:30,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:02:30,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 23:02:30,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285716427] [2022-09-20 23:02:30,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:02:30,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 23:02:30,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:02:30,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 23:02:30,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 23:02:30,357 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 247 [2022-09-20 23:02:30,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 230 transitions, 484 flow. Second operand has 2 states, 2 states have (on average 225.0) internal successors, (450), 2 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:30,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:02:30,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 247 [2022-09-20 23:02:30,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:02:30,577 INFO L130 PetriNetUnfolder]: 226/768 cut-off events. [2022-09-20 23:02:30,578 INFO L131 PetriNetUnfolder]: For 146/147 co-relation queries the response was YES. [2022-09-20 23:02:30,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 768 events. 226/768 cut-off events. For 146/147 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3408 event pairs, 121 based on Foata normal form. 198/879 useless extension candidates. Maximal degree in co-relation 906. Up to 306 conditions per place. [2022-09-20 23:02:30,588 INFO L137 encePairwiseOnDemand]: 234/247 looper letters, 14 selfloop transitions, 0 changer transitions 7/217 dead transitions. [2022-09-20 23:02:30,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 217 transitions, 486 flow [2022-09-20 23:02:30,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 23:02:30,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 23:02:30,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 465 transitions. [2022-09-20 23:02:30,604 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9412955465587044 [2022-09-20 23:02:30,604 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 465 transitions. [2022-09-20 23:02:30,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 465 transitions. [2022-09-20 23:02:30,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:02:30,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 465 transitions. [2022-09-20 23:02:30,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 232.5) internal successors, (465), 2 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:30,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:30,640 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:30,642 INFO L175 Difference]: Start difference. First operand has 224 places, 230 transitions, 484 flow. Second operand 2 states and 465 transitions. [2022-09-20 23:02:30,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 217 transitions, 486 flow [2022-09-20 23:02:30,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 217 transitions, 470 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-09-20 23:02:30,651 INFO L231 Difference]: Finished difference. Result has 217 places, 210 transitions, 428 flow [2022-09-20 23:02:30,653 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=428, PETRI_PLACES=217, PETRI_TRANSITIONS=210} [2022-09-20 23:02:30,656 INFO L287 CegarLoopForPetriNet]: 224 programPoint places, -7 predicate places. [2022-09-20 23:02:30,657 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 210 transitions, 428 flow [2022-09-20 23:02:30,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 225.0) internal successors, (450), 2 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:30,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:02:30,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:02:30,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 23:02:30,658 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 2 more)] === [2022-09-20 23:02:30,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:02:30,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1298672812, now seen corresponding path program 1 times [2022-09-20 23:02:30,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:02:30,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530045341] [2022-09-20 23:02:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:02:30,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:02:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:02:31,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:02:31,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:02:31,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530045341] [2022-09-20 23:02:31,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530045341] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:02:31,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:02:31,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 23:02:31,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023199762] [2022-09-20 23:02:31,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:02:31,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 23:02:31,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:02:31,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 23:02:31,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-09-20 23:02:31,124 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 247 [2022-09-20 23:02:31,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 210 transitions, 428 flow. Second operand has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:31,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:02:31,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 247 [2022-09-20 23:02:31,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:02:31,536 INFO L130 PetriNetUnfolder]: 778/1859 cut-off events. [2022-09-20 23:02:31,536 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-09-20 23:02:31,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3087 conditions, 1859 events. 778/1859 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11491 event pairs, 491 based on Foata normal form. 0/1579 useless extension candidates. Maximal degree in co-relation 3084. Up to 673 conditions per place. [2022-09-20 23:02:31,549 INFO L137 encePairwiseOnDemand]: 240/247 looper letters, 66 selfloop transitions, 6 changer transitions 0/231 dead transitions. [2022-09-20 23:02:31,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 231 transitions, 620 flow [2022-09-20 23:02:31,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 23:02:31,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 23:02:31,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1298 transitions. [2022-09-20 23:02:31,552 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7507229612492771 [2022-09-20 23:02:31,552 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1298 transitions. [2022-09-20 23:02:31,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1298 transitions. [2022-09-20 23:02:31,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:02:31,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1298 transitions. [2022-09-20 23:02:31,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 185.42857142857142) internal successors, (1298), 7 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:31,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 247.0) internal successors, (1976), 8 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:31,559 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 247.0) internal successors, (1976), 8 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:31,559 INFO L175 Difference]: Start difference. First operand has 217 places, 210 transitions, 428 flow. Second operand 7 states and 1298 transitions. [2022-09-20 23:02:31,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 231 transitions, 620 flow [2022-09-20 23:02:31,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 231 transitions, 620 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 23:02:31,567 INFO L231 Difference]: Finished difference. Result has 217 places, 211 transitions, 448 flow [2022-09-20 23:02:31,568 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=448, PETRI_PLACES=217, PETRI_TRANSITIONS=211} [2022-09-20 23:02:31,568 INFO L287 CegarLoopForPetriNet]: 224 programPoint places, -7 predicate places. [2022-09-20 23:02:31,568 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 211 transitions, 448 flow [2022-09-20 23:02:31,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:31,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:02:31,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:02:31,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 23:02:31,570 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 2 more)] === [2022-09-20 23:02:31,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:02:31,572 INFO L85 PathProgramCache]: Analyzing trace with hash 2093669461, now seen corresponding path program 1 times [2022-09-20 23:02:31,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:02:31,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734571251] [2022-09-20 23:02:31,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:02:31,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:02:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:02:31,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:02:31,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:02:31,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734571251] [2022-09-20 23:02:31,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734571251] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:02:31,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:02:31,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 23:02:31,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343215019] [2022-09-20 23:02:31,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:02:31,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 23:02:31,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:02:31,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 23:02:31,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-09-20 23:02:31,814 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 247 [2022-09-20 23:02:31,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 211 transitions, 448 flow. Second operand has 7 states, 7 states have (on average 182.28571428571428) internal successors, (1276), 7 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:31,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:02:31,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 247 [2022-09-20 23:02:31,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:02:32,269 INFO L130 PetriNetUnfolder]: 1323/2549 cut-off events. [2022-09-20 23:02:32,270 INFO L131 PetriNetUnfolder]: For 264/264 co-relation queries the response was YES. [2022-09-20 23:02:32,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4976 conditions, 2549 events. 1323/2549 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 15170 event pairs, 239 based on Foata normal form. 0/2404 useless extension candidates. Maximal degree in co-relation 4971. Up to 678 conditions per place. [2022-09-20 23:02:32,285 INFO L137 encePairwiseOnDemand]: 239/247 looper letters, 85 selfloop transitions, 10 changer transitions 0/255 dead transitions. [2022-09-20 23:02:32,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 255 transitions, 754 flow [2022-09-20 23:02:32,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 23:02:32,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 23:02:32,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1500 transitions. [2022-09-20 23:02:32,288 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7591093117408907 [2022-09-20 23:02:32,288 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1500 transitions. [2022-09-20 23:02:32,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1500 transitions. [2022-09-20 23:02:32,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:02:32,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1500 transitions. [2022-09-20 23:02:32,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 187.5) internal successors, (1500), 8 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:32,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 247.0) internal successors, (2223), 9 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:32,296 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 247.0) internal successors, (2223), 9 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:32,296 INFO L175 Difference]: Start difference. First operand has 217 places, 211 transitions, 448 flow. Second operand 8 states and 1500 transitions. [2022-09-20 23:02:32,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 255 transitions, 754 flow [2022-09-20 23:02:32,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 255 transitions, 741 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-20 23:02:32,300 INFO L231 Difference]: Finished difference. Result has 223 places, 218 transitions, 501 flow [2022-09-20 23:02:32,300 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=501, PETRI_PLACES=223, PETRI_TRANSITIONS=218} [2022-09-20 23:02:32,301 INFO L287 CegarLoopForPetriNet]: 224 programPoint places, -1 predicate places. [2022-09-20 23:02:32,301 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 218 transitions, 501 flow [2022-09-20 23:02:32,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 182.28571428571428) internal successors, (1276), 7 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:32,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:02:32,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:02:32,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 23:02:32,302 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 2 more)] === [2022-09-20 23:02:32,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:02:32,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1393038921, now seen corresponding path program 2 times [2022-09-20 23:02:32,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:02:32,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647745039] [2022-09-20 23:02:32,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:02:32,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:02:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:02:32,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:02:32,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:02:32,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647745039] [2022-09-20 23:02:32,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647745039] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:02:32,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:02:32,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 23:02:32,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381091913] [2022-09-20 23:02:32,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:02:32,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 23:02:32,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:02:32,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 23:02:32,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-20 23:02:32,394 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 247 [2022-09-20 23:02:32,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 218 transitions, 501 flow. Second operand has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:32,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:02:32,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 247 [2022-09-20 23:02:32,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:02:33,398 INFO L130 PetriNetUnfolder]: 4027/6860 cut-off events. [2022-09-20 23:02:33,398 INFO L131 PetriNetUnfolder]: For 2831/2831 co-relation queries the response was YES. [2022-09-20 23:02:33,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15952 conditions, 6860 events. 4027/6860 cut-off events. For 2831/2831 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 47145 event pairs, 382 based on Foata normal form. 133/6779 useless extension candidates. Maximal degree in co-relation 15943. Up to 1531 conditions per place. [2022-09-20 23:02:33,456 INFO L137 encePairwiseOnDemand]: 240/247 looper letters, 89 selfloop transitions, 20 changer transitions 0/293 dead transitions. [2022-09-20 23:02:33,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 293 transitions, 1024 flow [2022-09-20 23:02:33,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 23:02:33,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 23:02:33,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1528 transitions. [2022-09-20 23:02:33,459 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8837478311162522 [2022-09-20 23:02:33,459 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1528 transitions. [2022-09-20 23:02:33,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1528 transitions. [2022-09-20 23:02:33,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:02:33,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1528 transitions. [2022-09-20 23:02:33,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 218.28571428571428) internal successors, (1528), 7 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:33,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 247.0) internal successors, (1976), 8 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:33,466 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 247.0) internal successors, (1976), 8 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:33,466 INFO L175 Difference]: Start difference. First operand has 223 places, 218 transitions, 501 flow. Second operand 7 states and 1528 transitions. [2022-09-20 23:02:33,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 293 transitions, 1024 flow [2022-09-20 23:02:33,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 293 transitions, 1019 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 23:02:33,480 INFO L231 Difference]: Finished difference. Result has 230 places, 233 transitions, 667 flow [2022-09-20 23:02:33,483 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=667, PETRI_PLACES=230, PETRI_TRANSITIONS=233} [2022-09-20 23:02:33,485 INFO L287 CegarLoopForPetriNet]: 224 programPoint places, 6 predicate places. [2022-09-20 23:02:33,485 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 233 transitions, 667 flow [2022-09-20 23:02:33,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:33,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:02:33,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:02:33,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 23:02:33,486 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 2 more)] === [2022-09-20 23:02:33,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:02:33,486 INFO L85 PathProgramCache]: Analyzing trace with hash -493916749, now seen corresponding path program 3 times [2022-09-20 23:02:33,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:02:33,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50710368] [2022-09-20 23:02:33,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:02:33,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:02:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:02:33,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:02:33,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:02:33,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50710368] [2022-09-20 23:02:33,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50710368] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:02:33,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:02:33,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 23:02:33,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70219287] [2022-09-20 23:02:33,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:02:33,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 23:02:33,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:02:33,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 23:02:33,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-20 23:02:33,675 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 247 [2022-09-20 23:02:33,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 233 transitions, 667 flow. Second operand has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:33,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:02:33,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 247 [2022-09-20 23:02:33,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:02:35,194 INFO L130 PetriNetUnfolder]: 6384/10375 cut-off events. [2022-09-20 23:02:35,194 INFO L131 PetriNetUnfolder]: For 13939/13939 co-relation queries the response was YES. [2022-09-20 23:02:35,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29799 conditions, 10375 events. 6384/10375 cut-off events. For 13939/13939 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 74642 event pairs, 534 based on Foata normal form. 80/10295 useless extension candidates. Maximal degree in co-relation 29786. Up to 3702 conditions per place. [2022-09-20 23:02:35,277 INFO L137 encePairwiseOnDemand]: 240/247 looper letters, 89 selfloop transitions, 34 changer transitions 0/307 dead transitions. [2022-09-20 23:02:35,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 307 transitions, 1335 flow [2022-09-20 23:02:35,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 23:02:35,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 23:02:35,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1320 transitions. [2022-09-20 23:02:35,279 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8906882591093117 [2022-09-20 23:02:35,279 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1320 transitions. [2022-09-20 23:02:35,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1320 transitions. [2022-09-20 23:02:35,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:02:35,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1320 transitions. [2022-09-20 23:02:35,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:35,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 247.0) internal successors, (1729), 7 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:35,284 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 247.0) internal successors, (1729), 7 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:35,284 INFO L175 Difference]: Start difference. First operand has 230 places, 233 transitions, 667 flow. Second operand 6 states and 1320 transitions. [2022-09-20 23:02:35,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 307 transitions, 1335 flow [2022-09-20 23:02:35,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 307 transitions, 1335 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 23:02:35,305 INFO L231 Difference]: Finished difference. Result has 239 places, 255 transitions, 1033 flow [2022-09-20 23:02:35,306 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1033, PETRI_PLACES=239, PETRI_TRANSITIONS=255} [2022-09-20 23:02:35,306 INFO L287 CegarLoopForPetriNet]: 224 programPoint places, 15 predicate places. [2022-09-20 23:02:35,306 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 255 transitions, 1033 flow [2022-09-20 23:02:35,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:35,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:02:35,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:02:35,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 23:02:35,307 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 2 more)] === [2022-09-20 23:02:35,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:02:35,308 INFO L85 PathProgramCache]: Analyzing trace with hash 834332809, now seen corresponding path program 4 times [2022-09-20 23:02:35,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:02:35,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403513545] [2022-09-20 23:02:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:02:35,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:02:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:02:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:02:35,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:02:35,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403513545] [2022-09-20 23:02:35,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403513545] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:02:35,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:02:35,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 23:02:35,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074601191] [2022-09-20 23:02:35,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:02:35,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 23:02:35,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:02:35,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 23:02:35,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-20 23:02:35,405 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 247 [2022-09-20 23:02:35,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 255 transitions, 1033 flow. Second operand has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:35,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:02:35,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 247 [2022-09-20 23:02:35,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:02:38,173 INFO L130 PetriNetUnfolder]: 10455/19681 cut-off events. [2022-09-20 23:02:38,173 INFO L131 PetriNetUnfolder]: For 42781/42910 co-relation queries the response was YES. [2022-09-20 23:02:38,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55849 conditions, 19681 events. 10455/19681 cut-off events. For 42781/42910 co-relation queries the response was YES. Maximal size of possible extension queue 1303. Compared 180881 event pairs, 2401 based on Foata normal form. 80/18842 useless extension candidates. Maximal degree in co-relation 55831. Up to 4672 conditions per place. [2022-09-20 23:02:38,503 INFO L137 encePairwiseOnDemand]: 240/247 looper letters, 110 selfloop transitions, 47 changer transitions 0/341 dead transitions. [2022-09-20 23:02:38,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 341 transitions, 1973 flow [2022-09-20 23:02:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 23:02:38,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 23:02:38,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1321 transitions. [2022-09-20 23:02:38,506 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8913630229419703 [2022-09-20 23:02:38,506 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1321 transitions. [2022-09-20 23:02:38,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1321 transitions. [2022-09-20 23:02:38,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:02:38,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1321 transitions. [2022-09-20 23:02:38,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 220.16666666666666) internal successors, (1321), 6 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:38,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 247.0) internal successors, (1729), 7 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:38,511 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 247.0) internal successors, (1729), 7 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:38,511 INFO L175 Difference]: Start difference. First operand has 239 places, 255 transitions, 1033 flow. Second operand 6 states and 1321 transitions. [2022-09-20 23:02:38,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 341 transitions, 1973 flow [2022-09-20 23:02:38,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 341 transitions, 1901 flow, removed 36 selfloop flow, removed 0 redundant places. [2022-09-20 23:02:38,612 INFO L231 Difference]: Finished difference. Result has 248 places, 288 transitions, 1600 flow [2022-09-20 23:02:38,612 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1600, PETRI_PLACES=248, PETRI_TRANSITIONS=288} [2022-09-20 23:02:38,614 INFO L287 CegarLoopForPetriNet]: 224 programPoint places, 24 predicate places. [2022-09-20 23:02:38,614 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 288 transitions, 1600 flow [2022-09-20 23:02:38,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:38,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:02:38,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:02:38,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 23:02:38,615 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 2 more)] === [2022-09-20 23:02:38,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:02:38,615 INFO L85 PathProgramCache]: Analyzing trace with hash -991005253, now seen corresponding path program 5 times [2022-09-20 23:02:38,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:02:38,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502660807] [2022-09-20 23:02:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:02:38,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:02:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:02:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:02:38,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:02:38,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502660807] [2022-09-20 23:02:38,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502660807] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:02:38,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:02:38,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 23:02:38,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407066662] [2022-09-20 23:02:38,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:02:38,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 23:02:38,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:02:38,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 23:02:38,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-20 23:02:38,770 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 247 [2022-09-20 23:02:38,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 288 transitions, 1600 flow. Second operand has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:38,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:02:38,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 247 [2022-09-20 23:02:38,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:02:41,426 INFO L130 PetriNetUnfolder]: 10834/18315 cut-off events. [2022-09-20 23:02:41,426 INFO L131 PetriNetUnfolder]: For 59528/59643 co-relation queries the response was YES. [2022-09-20 23:02:41,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60154 conditions, 18315 events. 10834/18315 cut-off events. For 59528/59643 co-relation queries the response was YES. Maximal size of possible extension queue 1120. Compared 148347 event pairs, 1164 based on Foata normal form. 85/17823 useless extension candidates. Maximal degree in co-relation 60131. Up to 4079 conditions per place. [2022-09-20 23:02:41,622 INFO L137 encePairwiseOnDemand]: 239/247 looper letters, 105 selfloop transitions, 71 changer transitions 0/360 dead transitions. [2022-09-20 23:02:41,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 360 transitions, 2566 flow [2022-09-20 23:02:41,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 23:02:41,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 23:02:41,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1316 transitions. [2022-09-20 23:02:41,625 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8879892037786775 [2022-09-20 23:02:41,625 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1316 transitions. [2022-09-20 23:02:41,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1316 transitions. [2022-09-20 23:02:41,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:02:41,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1316 transitions. [2022-09-20 23:02:41,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 219.33333333333334) internal successors, (1316), 6 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:41,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 247.0) internal successors, (1729), 7 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:41,630 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 247.0) internal successors, (1729), 7 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:41,630 INFO L175 Difference]: Start difference. First operand has 248 places, 288 transitions, 1600 flow. Second operand 6 states and 1316 transitions. [2022-09-20 23:02:41,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 360 transitions, 2566 flow [2022-09-20 23:02:41,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 360 transitions, 2542 flow, removed 12 selfloop flow, removed 0 redundant places. [2022-09-20 23:02:41,816 INFO L231 Difference]: Finished difference. Result has 256 places, 313 transitions, 2224 flow [2022-09-20 23:02:41,817 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2224, PETRI_PLACES=256, PETRI_TRANSITIONS=313} [2022-09-20 23:02:41,817 INFO L287 CegarLoopForPetriNet]: 224 programPoint places, 32 predicate places. [2022-09-20 23:02:41,817 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 313 transitions, 2224 flow [2022-09-20 23:02:41,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:41,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:02:41,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:02:41,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 23:02:41,818 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 2 more)] === [2022-09-20 23:02:41,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:02:41,818 INFO L85 PathProgramCache]: Analyzing trace with hash 294462643, now seen corresponding path program 6 times [2022-09-20 23:02:41,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:02:41,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692385345] [2022-09-20 23:02:41,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:02:41,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:02:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:02:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:02:41,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:02:41,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692385345] [2022-09-20 23:02:41,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692385345] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:02:41,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:02:41,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 23:02:41,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494428934] [2022-09-20 23:02:41,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:02:41,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 23:02:41,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:02:41,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 23:02:41,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-20 23:02:41,889 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 247 [2022-09-20 23:02:41,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 313 transitions, 2224 flow. Second operand has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:41,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:02:41,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 247 [2022-09-20 23:02:41,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:02:44,761 INFO L130 PetriNetUnfolder]: 10175/17694 cut-off events. [2022-09-20 23:02:44,761 INFO L131 PetriNetUnfolder]: For 76380/76470 co-relation queries the response was YES. [2022-09-20 23:02:44,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63775 conditions, 17694 events. 10175/17694 cut-off events. For 76380/76470 co-relation queries the response was YES. Maximal size of possible extension queue 1169. Compared 147316 event pairs, 3754 based on Foata normal form. 30/17275 useless extension candidates. Maximal degree in co-relation 63748. Up to 12914 conditions per place. [2022-09-20 23:02:44,990 INFO L137 encePairwiseOnDemand]: 242/247 looper letters, 150 selfloop transitions, 12 changer transitions 0/346 dead transitions. [2022-09-20 23:02:44,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 346 transitions, 2736 flow [2022-09-20 23:02:44,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 23:02:44,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 23:02:44,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1095 transitions. [2022-09-20 23:02:44,993 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8866396761133604 [2022-09-20 23:02:44,993 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1095 transitions. [2022-09-20 23:02:44,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1095 transitions. [2022-09-20 23:02:44,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:02:44,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1095 transitions. [2022-09-20 23:02:44,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:44,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:44,999 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:44,999 INFO L175 Difference]: Start difference. First operand has 256 places, 313 transitions, 2224 flow. Second operand 5 states and 1095 transitions. [2022-09-20 23:02:44,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 346 transitions, 2736 flow [2022-09-20 23:02:45,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 346 transitions, 2680 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-09-20 23:02:45,369 INFO L231 Difference]: Finished difference. Result has 261 places, 316 transitions, 2256 flow [2022-09-20 23:02:45,370 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=2173, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2256, PETRI_PLACES=261, PETRI_TRANSITIONS=316} [2022-09-20 23:02:45,370 INFO L287 CegarLoopForPetriNet]: 224 programPoint places, 37 predicate places. [2022-09-20 23:02:45,371 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 316 transitions, 2256 flow [2022-09-20 23:02:45,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:45,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:02:45,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:02:45,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 23:02:45,372 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 2 more)] === [2022-09-20 23:02:45,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:02:45,372 INFO L85 PathProgramCache]: Analyzing trace with hash -244549895, now seen corresponding path program 7 times [2022-09-20 23:02:45,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:02:45,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525887742] [2022-09-20 23:02:45,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:02:45,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:02:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:02:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:02:45,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:02:45,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525887742] [2022-09-20 23:02:45,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525887742] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:02:45,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:02:45,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 23:02:45,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256820934] [2022-09-20 23:02:45,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:02:45,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 23:02:45,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:02:45,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 23:02:45,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-09-20 23:02:45,469 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 247 [2022-09-20 23:02:45,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 316 transitions, 2256 flow. Second operand has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:45,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:02:45,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 247 [2022-09-20 23:02:45,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:02:48,266 INFO L130 PetriNetUnfolder]: 10412/18406 cut-off events. [2022-09-20 23:02:48,266 INFO L131 PetriNetUnfolder]: For 81818/82037 co-relation queries the response was YES. [2022-09-20 23:02:48,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63795 conditions, 18406 events. 10412/18406 cut-off events. For 81818/82037 co-relation queries the response was YES. Maximal size of possible extension queue 1147. Compared 156104 event pairs, 1260 based on Foata normal form. 115/17966 useless extension candidates. Maximal degree in co-relation 63766. Up to 5619 conditions per place. [2022-09-20 23:02:48,496 INFO L137 encePairwiseOnDemand]: 240/247 looper letters, 147 selfloop transitions, 28 changer transitions 0/359 dead transitions. [2022-09-20 23:02:48,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 359 transitions, 2866 flow [2022-09-20 23:02:48,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 23:02:48,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 23:02:48,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1099 transitions. [2022-09-20 23:02:48,498 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8898785425101214 [2022-09-20 23:02:48,498 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1099 transitions. [2022-09-20 23:02:48,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1099 transitions. [2022-09-20 23:02:48,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:02:48,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1099 transitions. [2022-09-20 23:02:48,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 219.8) internal successors, (1099), 5 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) [2022-09-20 23:02:48,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:48,502 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:48,502 INFO L175 Difference]: Start difference. First operand has 261 places, 316 transitions, 2256 flow. Second operand 5 states and 1099 transitions. [2022-09-20 23:02:48,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 359 transitions, 2866 flow [2022-09-20 23:02:48,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 359 transitions, 2841 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-09-20 23:02:48,817 INFO L231 Difference]: Finished difference. Result has 265 places, 319 transitions, 2367 flow [2022-09-20 23:02:48,818 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=2219, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2367, PETRI_PLACES=265, PETRI_TRANSITIONS=319} [2022-09-20 23:02:48,818 INFO L287 CegarLoopForPetriNet]: 224 programPoint places, 41 predicate places. [2022-09-20 23:02:48,819 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 319 transitions, 2367 flow [2022-09-20 23:02:48,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:48,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:02:48,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:02:48,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 23:02:48,819 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 2 more)] === [2022-09-20 23:02:48,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:02:48,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1458301306, now seen corresponding path program 1 times [2022-09-20 23:02:48,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:02:48,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726724790] [2022-09-20 23:02:48,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:02:48,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:02:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:02:48,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:02:48,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:02:48,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726724790] [2022-09-20 23:02:48,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726724790] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:02:48,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:02:48,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 23:02:48,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579426661] [2022-09-20 23:02:48,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:02:48,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 23:02:48,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:02:48,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 23:02:48,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-20 23:02:48,879 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 247 [2022-09-20 23:02:48,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 319 transitions, 2367 flow. Second operand has 6 states, 6 states have (on average 197.83333333333334) internal successors, (1187), 6 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:48,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:02:48,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 247 [2022-09-20 23:02:48,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:02:50,540 INFO L130 PetriNetUnfolder]: 4164/9156 cut-off events. [2022-09-20 23:02:50,540 INFO L131 PetriNetUnfolder]: For 54310/54839 co-relation queries the response was YES. [2022-09-20 23:02:50,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37062 conditions, 9156 events. 4164/9156 cut-off events. For 54310/54839 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 81251 event pairs, 1926 based on Foata normal form. 158/8956 useless extension candidates. Maximal degree in co-relation 37031. Up to 4403 conditions per place. [2022-09-20 23:02:50,648 INFO L137 encePairwiseOnDemand]: 236/247 looper letters, 53 selfloop transitions, 8 changer transitions 20/343 dead transitions. [2022-09-20 23:02:50,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 343 transitions, 2581 flow [2022-09-20 23:02:50,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 23:02:50,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 23:02:50,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1803 transitions. [2022-09-20 23:02:50,651 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8110661268556005 [2022-09-20 23:02:50,651 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1803 transitions. [2022-09-20 23:02:50,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1803 transitions. [2022-09-20 23:02:50,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:02:50,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1803 transitions. [2022-09-20 23:02:50,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 200.33333333333334) internal successors, (1803), 9 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:50,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 247.0) internal successors, (2470), 10 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:50,658 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 247.0) internal successors, (2470), 10 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:50,658 INFO L175 Difference]: Start difference. First operand has 265 places, 319 transitions, 2367 flow. Second operand 9 states and 1803 transitions. [2022-09-20 23:02:50,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 343 transitions, 2581 flow [2022-09-20 23:02:50,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 343 transitions, 2546 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-09-20 23:02:50,832 INFO L231 Difference]: Finished difference. Result has 273 places, 320 transitions, 2362 flow [2022-09-20 23:02:50,833 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=2332, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2362, PETRI_PLACES=273, PETRI_TRANSITIONS=320} [2022-09-20 23:02:50,833 INFO L287 CegarLoopForPetriNet]: 224 programPoint places, 49 predicate places. [2022-09-20 23:02:50,833 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 320 transitions, 2362 flow [2022-09-20 23:02:50,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 197.83333333333334) internal successors, (1187), 6 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:50,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:02:50,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:02:50,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 23:02:50,834 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 2 more)] === [2022-09-20 23:02:50,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:02:50,835 INFO L85 PathProgramCache]: Analyzing trace with hash -2011863995, now seen corresponding path program 1 times [2022-09-20 23:02:50,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:02:50,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606631435] [2022-09-20 23:02:50,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:02:50,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:02:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:02:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:02:51,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:02:51,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606631435] [2022-09-20 23:02:51,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606631435] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:02:51,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492375257] [2022-09-20 23:02:51,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:02:51,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:02:51,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:02:51,458 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:02:51,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 23:02:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:02:51,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 72 conjunts are in the unsatisfiable core [2022-09-20 23:02:51,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:02:51,768 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 23:02:51,801 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-09-20 23:02:51,802 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-09-20 23:02:51,854 INFO L356 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-09-20 23:02:51,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 30 [2022-09-20 23:02:52,555 INFO L356 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-09-20 23:02:52,556 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 34 [2022-09-20 23:02:52,727 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-20 23:02:53,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 23:02:53,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 23:02:53,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 23:02:54,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 23:02:54,385 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-09-20 23:02:54,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:02:54,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:02:56,718 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 23:02:56,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 61 [2022-09-20 23:02:56,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1267 treesize of output 1235 [2022-09-20 23:02:56,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1235 treesize of output 1043 [2022-09-20 23:02:56,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1043 treesize of output 995 [2022-09-20 23:02:56,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 509 treesize of output 485 [2022-09-20 23:02:56,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 971 treesize of output 875 [2022-09-20 23:02:58,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 8 [2022-09-20 23:02:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:02:58,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492375257] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:02:58,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:02:58,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 32, 30] total 73 [2022-09-20 23:02:58,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821759190] [2022-09-20 23:02:58,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:02:58,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-09-20 23:02:58,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:02:58,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-09-20 23:02:58,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=748, Invalid=4436, Unknown=72, NotChecked=0, Total=5256 [2022-09-20 23:02:58,483 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 247 [2022-09-20 23:02:58,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 320 transitions, 2362 flow. Second operand has 73 states, 73 states have (on average 107.84931506849315) internal successors, (7873), 73 states have internal predecessors, (7873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:02:58,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:02:58,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 247 [2022-09-20 23:02:58,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:03:51,033 INFO L130 PetriNetUnfolder]: 126669/211539 cut-off events. [2022-09-20 23:03:51,033 INFO L131 PetriNetUnfolder]: For 1045316/1051025 co-relation queries the response was YES. [2022-09-20 23:03:53,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 754447 conditions, 211539 events. 126669/211539 cut-off events. For 1045316/1051025 co-relation queries the response was YES. Maximal size of possible extension queue 9120. Compared 2204577 event pairs, 3800 based on Foata normal form. 3184/210653 useless extension candidates. Maximal degree in co-relation 754414. Up to 47069 conditions per place. [2022-09-20 23:03:55,435 INFO L137 encePairwiseOnDemand]: 198/247 looper letters, 1594 selfloop transitions, 615 changer transitions 45/2359 dead transitions. [2022-09-20 23:03:55,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 2359 transitions, 29022 flow [2022-09-20 23:03:55,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-09-20 23:03:55,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2022-09-20 23:03:55,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 13971 transitions. [2022-09-20 23:03:55,455 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.45985978078404266 [2022-09-20 23:03:55,456 INFO L72 ComplementDD]: Start complementDD. Operand 123 states and 13971 transitions. [2022-09-20 23:03:55,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 13971 transitions. [2022-09-20 23:03:55,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:03:55,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 123 states and 13971 transitions. [2022-09-20 23:03:55,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 124 states, 123 states have (on average 113.58536585365853) internal successors, (13971), 123 states have internal predecessors, (13971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:03:55,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 124 states, 124 states have (on average 247.0) internal successors, (30628), 124 states have internal predecessors, (30628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:03:55,524 INFO L81 ComplementDD]: Finished complementDD. Result has 124 states, 124 states have (on average 247.0) internal successors, (30628), 124 states have internal predecessors, (30628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:03:55,524 INFO L175 Difference]: Start difference. First operand has 273 places, 320 transitions, 2362 flow. Second operand 123 states and 13971 transitions. [2022-09-20 23:03:55,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 2359 transitions, 29022 flow [2022-09-20 23:04:33,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 2359 transitions, 28920 flow, removed 41 selfloop flow, removed 6 redundant places. [2022-09-20 23:04:33,289 INFO L231 Difference]: Finished difference. Result has 466 places, 978 transitions, 13302 flow [2022-09-20 23:04:33,289 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=2342, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=123, PETRI_FLOW=13302, PETRI_PLACES=466, PETRI_TRANSITIONS=978} [2022-09-20 23:04:33,290 INFO L287 CegarLoopForPetriNet]: 224 programPoint places, 242 predicate places. [2022-09-20 23:04:33,290 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 978 transitions, 13302 flow [2022-09-20 23:04:33,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 107.84931506849315) internal successors, (7873), 73 states have internal predecessors, (7873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:04:33,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:04:33,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:04:33,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-20 23:04:33,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-09-20 23:04:33,509 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 2 more)] === [2022-09-20 23:04:33,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:04:33,510 INFO L85 PathProgramCache]: Analyzing trace with hash -488573139, now seen corresponding path program 2 times [2022-09-20 23:04:33,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:04:33,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896889671] [2022-09-20 23:04:33,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:04:33,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:04:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:04:34,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:04:34,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:04:34,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896889671] [2022-09-20 23:04:34,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896889671] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:04:34,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381656515] [2022-09-20 23:04:34,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 23:04:34,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:04:34,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:04:34,246 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:04:34,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 23:04:34,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-20 23:04:34,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 23:04:34,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 61 conjunts are in the unsatisfiable core [2022-09-20 23:04:34,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:04:34,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 23:04:34,516 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-09-20 23:04:34,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-09-20 23:04:34,949 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-20 23:04:34,949 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-09-20 23:04:35,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-20 23:04:35,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 23:04:35,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 23:04:35,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-09-20 23:04:36,106 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-09-20 23:04:36,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-20 23:04:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:04:36,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:04:37,839 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 23:04:37,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 49 [2022-09-20 23:04:37,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 359 treesize of output 335 [2022-09-20 23:04:37,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 314 treesize of output 290 [2022-09-20 23:04:37,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 290 treesize of output 242 [2022-09-20 23:04:37,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 140 treesize of output 122 [2022-09-20 23:04:38,958 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 8 [2022-09-20 23:04:38,963 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 8 [2022-09-20 23:04:39,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:04:39,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381656515] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:04:39,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:04:39,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28, 27] total 68 [2022-09-20 23:04:39,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28111460] [2022-09-20 23:04:39,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:04:39,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-09-20 23:04:39,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:04:39,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-09-20 23:04:39,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=4162, Unknown=27, NotChecked=0, Total=4556 [2022-09-20 23:04:39,025 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 247 [2022-09-20 23:04:39,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 978 transitions, 13302 flow. Second operand has 68 states, 68 states have (on average 102.07352941176471) internal successors, (6941), 68 states have internal predecessors, (6941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:04:39,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:04:39,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 247 [2022-09-20 23:04:39,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:04:41,530 WARN L833 $PredicateComparison]: unable to prove that (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t2~0#1.base|) (<= 0 c_~total~0) (forall ((v_ArrVal_304 (Array Int Int)) (~q1_back~0 Int) (v_ArrVal_303 (Array Int Int)) (v_ArrVal_302 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_302)) (.cse1 (+ (* ~q1_back~0 4) c_~q1~0.offset))) (or (<= c_~n1~0 ~q1_back~0) (<= (select (select .cse0 c_~q1~0.base) .cse1) 0) (< 0 (+ (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_303) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_304) c_~q1~0.base) .cse1) c_~total~0)) (< ~q1_back~0 0)))) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#t2~0#1.base|) (= c_~total~0 0) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t1~0#1.base|)) is different from false