/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-RepeatedSemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 04:24:34,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 04:24:34,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 04:24:34,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 04:24:34,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 04:24:34,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 04:24:34,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 04:24:34,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 04:24:34,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 04:24:34,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 04:24:34,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 04:24:34,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 04:24:34,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 04:24:34,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 04:24:34,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 04:24:34,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 04:24:34,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 04:24:34,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 04:24:34,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 04:24:34,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 04:24:34,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 04:24:34,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 04:24:34,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 04:24:34,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 04:24:34,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 04:24:34,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 04:24:34,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 04:24:34,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 04:24:34,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 04:24:34,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 04:24:34,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 04:24:34,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 04:24:34,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 04:24:34,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 04:24:34,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 04:24:34,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 04:24:34,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 04:24:34,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 04:24:34,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 04:24:34,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 04:24:34,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 04:24:34,220 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-RepeatedSemanticLbe.epf [2022-12-13 04:24:34,252 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 04:24:34,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 04:24:34,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 04:24:34,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 04:24:34,255 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 04:24:34,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 04:24:34,256 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 04:24:34,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 04:24:34,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 04:24:34,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 04:24:34,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 04:24:34,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 04:24:34,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 04:24:34,258 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 04:24:34,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 04:24:34,258 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 04:24:34,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 04:24:34,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 04:24:34,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 04:24:34,259 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 04:24:34,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 04:24:34,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 04:24:34,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 04:24:34,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 04:24:34,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 04:24:34,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 04:24:34,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 04:24:34,260 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 04:24:34,260 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-13 04:24:34,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 04:24:34,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 04:24:34,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 04:24:34,616 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 04:24:34,616 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 04:24:34,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2022-12-13 04:24:35,679 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 04:24:35,913 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 04:24:35,913 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2022-12-13 04:24:35,919 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/406dbdff3/923bd43605c34fa3a95e1d2c7da4fc93/FLAG4fa8e0e9f [2022-12-13 04:24:35,931 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/406dbdff3/923bd43605c34fa3a95e1d2c7da4fc93 [2022-12-13 04:24:35,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 04:24:35,935 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 04:24:35,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 04:24:35,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 04:24:35,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 04:24:35,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:24:35" (1/1) ... [2022-12-13 04:24:35,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@158894f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:24:35, skipping insertion in model container [2022-12-13 04:24:35,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:24:35" (1/1) ... [2022-12-13 04:24:35,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 04:24:35,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 04:24:36,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 04:24:36,149 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 04:24:36,150 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 04:24:36,150 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 04:24:36,154 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 04:24:36,156 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 04:24:36,157 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 04:24:36,157 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 04:24:36,169 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 04:24:36,170 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 04:24:36,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 04:24:36,174 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 04:24:36,174 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 04:24:36,175 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 04:24:36,176 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 04:24:36,178 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 04:24:36,178 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 04:24:36,179 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 04:24:36,188 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 04:24:36,188 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 04:24:36,199 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-12-13 04:24:36,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 04:24:36,229 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 04:24:36,245 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 04:24:36,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 04:24:36,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 04:24:36,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 04:24:36,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 04:24:36,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 04:24:36,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 04:24:36,254 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 04:24:36,265 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 04:24:36,265 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 04:24:36,267 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 04:24:36,269 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 04:24:36,269 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 04:24:36,270 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 04:24:36,272 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 04:24:36,273 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 04:24:36,273 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 04:24:36,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 04:24:36,278 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 04:24:36,279 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 04:24:36,282 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-12-13 04:24:36,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 04:24:36,308 INFO L208 MainTranslator]: Completed translation [2022-12-13 04:24:36,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:24:36 WrapperNode [2022-12-13 04:24:36,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 04:24:36,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 04:24:36,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 04:24:36,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 04:24:36,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:24:36" (1/1) ... [2022-12-13 04:24:36,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:24:36" (1/1) ... [2022-12-13 04:24:36,378 INFO L138 Inliner]: procedures = 29, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 386 [2022-12-13 04:24:36,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 04:24:36,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 04:24:36,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 04:24:36,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 04:24:36,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:24:36" (1/1) ... [2022-12-13 04:24:36,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:24:36" (1/1) ... [2022-12-13 04:24:36,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:24:36" (1/1) ... [2022-12-13 04:24:36,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:24:36" (1/1) ... [2022-12-13 04:24:36,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:24:36" (1/1) ... [2022-12-13 04:24:36,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:24:36" (1/1) ... [2022-12-13 04:24:36,406 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:24:36" (1/1) ... [2022-12-13 04:24:36,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:24:36" (1/1) ... [2022-12-13 04:24:36,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 04:24:36,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 04:24:36,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 04:24:36,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 04:24:36,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:24:36" (1/1) ... [2022-12-13 04:24:36,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 04:24:36,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 04:24:36,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 04:24:36,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 04:24:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 04:24:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 04:24:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 04:24:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 04:24:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 04:24:36,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 04:24:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 04:24:36,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 04:24:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 04:24:36,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 04:24:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 04:24:36,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 04:24:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 04:24:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-13 04:24:36,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-13 04:24:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-12-13 04:24:36,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-12-13 04:24:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 04:24:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 04:24:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 04:24:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 04:24:36,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 04:24:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 04:24:36,502 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 04:24:36,657 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 04:24:36,658 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 04:24:37,089 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 04:24:37,305 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 04:24:37,306 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-13 04:24:37,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:24:37 BoogieIcfgContainer [2022-12-13 04:24:37,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 04:24:37,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 04:24:37,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 04:24:37,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 04:24:37,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:24:35" (1/3) ... [2022-12-13 04:24:37,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f1e2e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:24:37, skipping insertion in model container [2022-12-13 04:24:37,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:24:36" (2/3) ... [2022-12-13 04:24:37,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f1e2e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:24:37, skipping insertion in model container [2022-12-13 04:24:37,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:24:37" (3/3) ... [2022-12-13 04:24:37,317 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2022-12-13 04:24:37,334 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 04:24:37,334 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 04:24:37,334 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 04:24:37,480 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-12-13 04:24:37,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 293 transitions, 658 flow [2022-12-13 04:24:37,664 INFO L130 PetriNetUnfolder]: 21/249 cut-off events. [2022-12-13 04:24:37,664 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 04:24:37,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 249 events. 21/249 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 283 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 212. Up to 3 conditions per place. [2022-12-13 04:24:37,674 INFO L82 GeneralOperation]: Start removeDead. Operand has 289 places, 293 transitions, 658 flow [2022-12-13 04:24:37,678 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 241 transitions, 530 flow [2022-12-13 04:24:37,680 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 04:24:37,700 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 241 transitions, 530 flow [2022-12-13 04:24:37,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 241 transitions, 530 flow [2022-12-13 04:24:37,762 INFO L130 PetriNetUnfolder]: 21/241 cut-off events. [2022-12-13 04:24:37,762 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 04:24:37,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 241 events. 21/241 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 282 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 212. Up to 3 conditions per place. [2022-12-13 04:24:37,774 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 241 transitions, 530 flow [2022-12-13 04:24:37,774 INFO L226 LiptonReduction]: Number of co-enabled transitions 8352 [2022-12-13 04:24:47,705 INFO L241 LiptonReduction]: Total number of compositions: 184 [2022-12-13 04:24:47,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 04:24:47,725 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=REPEATED_LIPTON_PN, 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;@b8b4cd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 04:24:47,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-13 04:24:47,735 INFO L130 PetriNetUnfolder]: 10/57 cut-off events. [2022-12-13 04:24:47,736 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 04:24:47,736 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 04:24:47,737 INFO L214 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] [2022-12-13 04:24:47,737 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 04:24:47,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 04:24:47,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1141140935, now seen corresponding path program 1 times [2022-12-13 04:24:47,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 04:24:47,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606629964] [2022-12-13 04:24:47,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 04:24:47,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 04:24:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 04:24:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 04:24:48,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 04:24:48,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606629964] [2022-12-13 04:24:48,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606629964] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 04:24:48,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 04:24:48,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 04:24:48,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905418517] [2022-12-13 04:24:48,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 04:24:48,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 04:24:48,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 04:24:48,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 04:24:48,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 04:24:48,066 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2022-12-13 04:24:48,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 164 flow. Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 04:24:48,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 04:24:48,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2022-12-13 04:24:48,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 04:24:48,622 INFO L130 PetriNetUnfolder]: 3214/4245 cut-off events. [2022-12-13 04:24:48,622 INFO L131 PetriNetUnfolder]: For 787/787 co-relation queries the response was YES. [2022-12-13 04:24:48,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9422 conditions, 4245 events. 3214/4245 cut-off events. For 787/787 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 14775 event pairs, 1953 based on Foata normal form. 0/2955 useless extension candidates. Maximal degree in co-relation 9103. Up to 4099 conditions per place. [2022-12-13 04:24:48,648 INFO L137 encePairwiseOnDemand]: 57/58 looper letters, 41 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2022-12-13 04:24:48,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 57 transitions, 244 flow [2022-12-13 04:24:48,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 04:24:48,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 04:24:48,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 74 transitions. [2022-12-13 04:24:48,658 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6379310344827587 [2022-12-13 04:24:48,661 INFO L295 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places. [2022-12-13 04:24:48,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 57 transitions, 244 flow [2022-12-13 04:24:48,682 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 57 transitions, 244 flow [2022-12-13 04:24:48,704 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 04:24:48,705 INFO L89 Accepts]: Start accepts. Operand has 68 places, 57 transitions, 244 flow [2022-12-13 04:24:48,710 INFO L95 Accepts]: Finished accepts. [2022-12-13 04:24:48,710 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 04:24:48,710 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 57 transitions, 244 flow [2022-12-13 04:24:48,714 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 57 transitions, 244 flow [2022-12-13 04:24:48,714 INFO L226 LiptonReduction]: Number of co-enabled transitions 706 [2022-12-13 04:24:48,778 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 04:24:48,781 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 77 [2022-12-13 04:24:48,781 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 244 flow [2022-12-13 04:24:48,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 04:24:48,781 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 04:24:48,782 INFO L214 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] [2022-12-13 04:24:48,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 04:24:48,782 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 04:24:48,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 04:24:48,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1645174705, now seen corresponding path program 1 times [2022-12-13 04:24:48,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 04:24:48,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636117073] [2022-12-13 04:24:48,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 04:24:48,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 04:24:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 04:24:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 04:24:49,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 04:24:49,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636117073] [2022-12-13 04:24:49,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636117073] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 04:24:49,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 04:24:49,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 04:24:49,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314473034] [2022-12-13 04:24:49,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 04:24:49,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 04:24:49,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 04:24:49,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 04:24:49,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 04:24:49,491 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2022-12-13 04:24:49,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 04:24:49,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 04:24:49,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2022-12-13 04:24:49,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 04:24:50,723 INFO L130 PetriNetUnfolder]: 8121/10703 cut-off events. [2022-12-13 04:24:50,723 INFO L131 PetriNetUnfolder]: For 2620/3654 co-relation queries the response was YES. [2022-12-13 04:24:50,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34841 conditions, 10703 events. 8121/10703 cut-off events. For 2620/3654 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 45559 event pairs, 4054 based on Foata normal form. 82/7994 useless extension candidates. Maximal degree in co-relation 20725. Up to 10562 conditions per place. [2022-12-13 04:24:50,804 INFO L137 encePairwiseOnDemand]: 50/57 looper letters, 40 selfloop transitions, 2 changer transitions 63/121 dead transitions. [2022-12-13 04:24:50,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 121 transitions, 794 flow [2022-12-13 04:24:50,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 04:24:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 04:24:50,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2022-12-13 04:24:50,809 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6701754385964912 [2022-12-13 04:24:50,810 INFO L295 CegarLoopForPetriNet]: 67 programPoint places, 5 predicate places. [2022-12-13 04:24:50,810 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 121 transitions, 794 flow [2022-12-13 04:24:50,834 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 58 transitions, 332 flow [2022-12-13 04:24:50,888 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 04:24:50,888 INFO L89 Accepts]: Start accepts. Operand has 70 places, 58 transitions, 332 flow [2022-12-13 04:24:50,890 INFO L95 Accepts]: Finished accepts. [2022-12-13 04:24:50,890 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 04:24:50,890 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 58 transitions, 332 flow [2022-12-13 04:24:50,892 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 58 transitions, 332 flow [2022-12-13 04:24:50,893 INFO L226 LiptonReduction]: Number of co-enabled transitions 706 [2022-12-13 04:24:52,167 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 04:24:52,169 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1280 [2022-12-13 04:24:52,169 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 326 flow [2022-12-13 04:24:52,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 04:24:52,170 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 04:24:52,170 INFO L214 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] [2022-12-13 04:24:52,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 04:24:52,170 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 04:24:52,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 04:24:52,171 INFO L85 PathProgramCache]: Analyzing trace with hash 453167913, now seen corresponding path program 1 times [2022-12-13 04:24:52,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 04:24:52,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611098291] [2022-12-13 04:24:52,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 04:24:52,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 04:24:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 04:24:53,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 04:24:53,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 04:24:53,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611098291] [2022-12-13 04:24:53,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611098291] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 04:24:53,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 04:24:53,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 04:24:53,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168169229] [2022-12-13 04:24:53,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 04:24:53,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 04:24:53,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 04:24:53,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 04:24:53,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 04:24:53,029 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2022-12-13 04:24:53,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 326 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 04:24:53,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 04:24:53,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2022-12-13 04:24:53,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 04:24:54,507 INFO L130 PetriNetUnfolder]: 9425/12127 cut-off events. [2022-12-13 04:24:54,508 INFO L131 PetriNetUnfolder]: For 3283/5091 co-relation queries the response was YES. [2022-12-13 04:24:54,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51114 conditions, 12127 events. 9425/12127 cut-off events. For 3283/5091 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 49110 event pairs, 2515 based on Foata normal form. 1/8319 useless extension candidates. Maximal degree in co-relation 49405. Up to 11993 conditions per place. [2022-12-13 04:24:54,578 INFO L137 encePairwiseOnDemand]: 48/57 looper letters, 117 selfloop transitions, 10 changer transitions 9/152 dead transitions. [2022-12-13 04:24:54,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 152 transitions, 1279 flow [2022-12-13 04:24:54,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 04:24:54,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 04:24:54,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 233 transitions. [2022-12-13 04:24:54,580 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6812865497076024 [2022-12-13 04:24:54,581 INFO L295 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2022-12-13 04:24:54,581 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 152 transitions, 1279 flow [2022-12-13 04:24:54,637 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 143 transitions, 1195 flow [2022-12-13 04:24:54,698 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 04:24:54,698 INFO L89 Accepts]: Start accepts. Operand has 73 places, 143 transitions, 1195 flow [2022-12-13 04:24:54,701 INFO L95 Accepts]: Finished accepts. [2022-12-13 04:24:54,701 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 04:24:54,701 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 143 transitions, 1195 flow [2022-12-13 04:24:54,706 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 143 transitions, 1195 flow [2022-12-13 04:24:54,706 INFO L226 LiptonReduction]: Number of co-enabled transitions 1538 [2022-12-13 04:24:54,743 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 04:24:54,744 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 46 [2022-12-13 04:24:54,745 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 143 transitions, 1195 flow [2022-12-13 04:24:54,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 04:24:54,745 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 04:24:54,745 INFO L214 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] [2022-12-13 04:24:54,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 04:24:54,745 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 04:24:54,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 04:24:54,746 INFO L85 PathProgramCache]: Analyzing trace with hash -960637909, now seen corresponding path program 2 times [2022-12-13 04:24:54,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 04:24:54,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016235403] [2022-12-13 04:24:54,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 04:24:54,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 04:24:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 04:24:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 04:24:55,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 04:24:55,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016235403] [2022-12-13 04:24:55,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016235403] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 04:24:55,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 04:24:55,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 04:24:55,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43789458] [2022-12-13 04:24:55,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 04:24:55,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 04:24:55,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 04:24:55,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 04:24:55,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 04:24:55,452 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2022-12-13 04:24:55,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 143 transitions, 1195 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 04:24:55,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 04:24:55,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2022-12-13 04:24:55,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 04:24:57,045 INFO L130 PetriNetUnfolder]: 9401/12049 cut-off events. [2022-12-13 04:24:57,045 INFO L131 PetriNetUnfolder]: For 4046/7058 co-relation queries the response was YES. [2022-12-13 04:24:57,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62862 conditions, 12049 events. 9401/12049 cut-off events. For 4046/7058 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 48219 event pairs, 2447 based on Foata normal form. 97/8325 useless extension candidates. Maximal degree in co-relation 60838. Up to 11955 conditions per place. [2022-12-13 04:24:57,120 INFO L137 encePairwiseOnDemand]: 48/57 looper letters, 124 selfloop transitions, 12 changer transitions 9/161 dead transitions. [2022-12-13 04:24:57,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 161 transitions, 1650 flow [2022-12-13 04:24:57,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 04:24:57,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 04:24:57,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 228 transitions. [2022-12-13 04:24:57,123 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-12-13 04:24:57,124 INFO L295 CegarLoopForPetriNet]: 67 programPoint places, 11 predicate places. [2022-12-13 04:24:57,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 161 transitions, 1650 flow [2022-12-13 04:24:57,186 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 152 transitions, 1548 flow [2022-12-13 04:24:57,248 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 04:24:57,248 INFO L89 Accepts]: Start accepts. Operand has 77 places, 152 transitions, 1548 flow [2022-12-13 04:24:57,256 INFO L95 Accepts]: Finished accepts. [2022-12-13 04:24:57,256 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 04:24:57,257 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 152 transitions, 1548 flow [2022-12-13 04:24:57,261 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 152 transitions, 1548 flow [2022-12-13 04:24:57,261 INFO L226 LiptonReduction]: Number of co-enabled transitions 1560 [2022-12-13 04:24:57,306 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 04:24:57,315 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 67 [2022-12-13 04:24:57,315 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 152 transitions, 1548 flow [2022-12-13 04:24:57,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 04:24:57,315 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 04:24:57,316 INFO L214 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] [2022-12-13 04:24:57,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 04:24:57,316 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 04:24:57,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 04:24:57,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1669201549, now seen corresponding path program 1 times [2022-12-13 04:24:57,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 04:24:57,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071646641] [2022-12-13 04:24:57,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 04:24:57,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 04:24:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 04:24:57,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 04:24:57,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 04:24:57,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071646641] [2022-12-13 04:24:57,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071646641] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 04:24:57,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 04:24:57,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 04:24:57,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799814465] [2022-12-13 04:24:57,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 04:24:57,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 04:24:57,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 04:24:57,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 04:24:57,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 04:24:57,596 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2022-12-13 04:24:57,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 152 transitions, 1548 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 04:24:57,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 04:24:57,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2022-12-13 04:24:57,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 04:24:59,935 INFO L130 PetriNetUnfolder]: 16676/21684 cut-off events. [2022-12-13 04:24:59,936 INFO L131 PetriNetUnfolder]: For 8546/13428 co-relation queries the response was YES. [2022-12-13 04:24:59,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134833 conditions, 21684 events. 16676/21684 cut-off events. For 8546/13428 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 98977 event pairs, 4540 based on Foata normal form. 0/15703 useless extension candidates. Maximal degree in co-relation 72263. Up to 21519 conditions per place. [2022-12-13 04:25:00,069 INFO L137 encePairwiseOnDemand]: 52/57 looper letters, 241 selfloop transitions, 3 changer transitions 14/274 dead transitions. [2022-12-13 04:25:00,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 274 transitions, 3431 flow [2022-12-13 04:25:00,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 04:25:00,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 04:25:00,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2022-12-13 04:25:00,071 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6359649122807017 [2022-12-13 04:25:00,071 INFO L295 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2022-12-13 04:25:00,071 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 274 transitions, 3431 flow [2022-12-13 04:25:00,185 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 260 transitions, 3245 flow [2022-12-13 04:25:00,317 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 04:25:00,318 INFO L89 Accepts]: Start accepts. Operand has 80 places, 260 transitions, 3245 flow [2022-12-13 04:25:00,320 INFO L95 Accepts]: Finished accepts. [2022-12-13 04:25:00,321 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 04:25:00,321 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 260 transitions, 3245 flow [2022-12-13 04:25:00,332 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 260 transitions, 3245 flow [2022-12-13 04:25:00,332 INFO L226 LiptonReduction]: Number of co-enabled transitions 2538 [2022-12-13 04:25:03,721 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 04:25:03,722 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 3405 [2022-12-13 04:25:03,723 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 259 transitions, 3233 flow [2022-12-13 04:25:03,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 04:25:03,723 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 04:25:03,723 INFO L214 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] [2022-12-13 04:25:03,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 04:25:03,723 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 04:25:03,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 04:25:03,724 INFO L85 PathProgramCache]: Analyzing trace with hash -274507295, now seen corresponding path program 1 times [2022-12-13 04:25:03,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 04:25:03,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480801333] [2022-12-13 04:25:03,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 04:25:03,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 04:25:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 04:25:03,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 04:25:03,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 04:25:03,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480801333] [2022-12-13 04:25:03,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480801333] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 04:25:03,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 04:25:03,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 04:25:03,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644836011] [2022-12-13 04:25:03,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 04:25:03,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 04:25:03,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 04:25:03,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 04:25:03,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 04:25:03,948 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2022-12-13 04:25:03,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 259 transitions, 3233 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 04:25:03,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 04:25:03,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2022-12-13 04:25:03,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 04:25:05,506 INFO L130 PetriNetUnfolder]: 11294/14783 cut-off events. [2022-12-13 04:25:05,507 INFO L131 PetriNetUnfolder]: For 8868/14484 co-relation queries the response was YES. [2022-12-13 04:25:05,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106216 conditions, 14783 events. 11294/14783 cut-off events. For 8868/14484 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 65324 event pairs, 3558 based on Foata normal form. 0/10756 useless extension candidates. Maximal degree in co-relation 83856. Up to 14590 conditions per place. [2022-12-13 04:25:05,606 INFO L137 encePairwiseOnDemand]: 54/58 looper letters, 169 selfloop transitions, 3 changer transitions 41/229 dead transitions. [2022-12-13 04:25:05,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 229 transitions, 3266 flow [2022-12-13 04:25:05,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 04:25:05,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 04:25:05,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2022-12-13 04:25:05,608 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7011494252873564 [2022-12-13 04:25:05,610 INFO L295 CegarLoopForPetriNet]: 67 programPoint places, 14 predicate places. [2022-12-13 04:25:05,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 229 transitions, 3266 flow [2022-12-13 04:25:05,686 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 188 transitions, 2638 flow [2022-12-13 04:25:05,779 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 04:25:05,779 INFO L89 Accepts]: Start accepts. Operand has 80 places, 188 transitions, 2638 flow [2022-12-13 04:25:05,782 INFO L95 Accepts]: Finished accepts. [2022-12-13 04:25:05,783 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 04:25:05,783 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 188 transitions, 2638 flow [2022-12-13 04:25:05,789 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 188 transitions, 2638 flow [2022-12-13 04:25:05,789 INFO L226 LiptonReduction]: Number of co-enabled transitions 1604 [2022-12-13 04:25:05,822 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 04:25:05,823 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 44 [2022-12-13 04:25:05,823 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 188 transitions, 2638 flow [2022-12-13 04:25:05,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 04:25:05,824 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 04:25:05,824 INFO L214 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] [2022-12-13 04:25:05,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 04:25:05,824 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 04:25:05,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 04:25:05,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1404737427, now seen corresponding path program 1 times [2022-12-13 04:25:05,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 04:25:05,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920613639] [2022-12-13 04:25:05,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 04:25:05,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 04:25:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 04:25:06,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 04:25:06,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 04:25:06,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920613639] [2022-12-13 04:25:06,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920613639] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 04:25:06,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144309544] [2022-12-13 04:25:06,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 04:25:06,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 04:25:06,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 04:25:06,146 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 04:25:06,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 04:25:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 04:25:06,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 04:25:06,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 04:25:06,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 04:25:06,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 04:25:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 04:25:06,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144309544] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 04:25:06,850 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 04:25:06,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2022-12-13 04:25:06,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713828544] [2022-12-13 04:25:06,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 04:25:06,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 04:25:06,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 04:25:06,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 04:25:06,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-12-13 04:25:06,852 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2022-12-13 04:25:06,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 188 transitions, 2638 flow. Second operand has 12 states, 12 states have (on average 23.75) internal successors, (285), 12 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 04:25:06,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 04:25:06,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2022-12-13 04:25:06,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 04:25:14,638 INFO L130 PetriNetUnfolder]: 57773/73399 cut-off events. [2022-12-13 04:25:14,638 INFO L131 PetriNetUnfolder]: For 28437/63585 co-relation queries the response was YES. [2022-12-13 04:25:14,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602590 conditions, 73399 events. 57773/73399 cut-off events. For 28437/63585 co-relation queries the response was YES. Maximal size of possible extension queue 1654. Compared 367658 event pairs, 3826 based on Foata normal form. 568/50715 useless extension candidates. Maximal degree in co-relation 384729. Up to 73258 conditions per place. [2022-12-13 04:25:15,154 INFO L137 encePairwiseOnDemand]: 48/57 looper letters, 1001 selfloop transitions, 122 changer transitions 20/1159 dead transitions. [2022-12-13 04:25:15,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 1159 transitions, 19592 flow [2022-12-13 04:25:15,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 04:25:15,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-13 04:25:15,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 794 transitions. [2022-12-13 04:25:15,157 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7738791423001949 [2022-12-13 04:25:15,158 INFO L295 CegarLoopForPetriNet]: 67 programPoint places, 29 predicate places. [2022-12-13 04:25:15,158 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 1159 transitions, 19592 flow [2022-12-13 04:25:15,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 1139 transitions, 19212 flow [2022-12-13 04:25:16,138 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 04:25:16,139 INFO L89 Accepts]: Start accepts. Operand has 96 places, 1139 transitions, 19212 flow [2022-12-13 04:25:16,149 INFO L95 Accepts]: Finished accepts. [2022-12-13 04:25:16,150 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 04:25:16,150 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 1139 transitions, 19212 flow [2022-12-13 04:25:16,208 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 1139 transitions, 19212 flow [2022-12-13 04:25:16,209 INFO L226 LiptonReduction]: Number of co-enabled transitions 5244 [2022-12-13 04:25:16,295 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 04:25:16,296 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 158 [2022-12-13 04:25:16,296 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 1139 transitions, 19212 flow [2022-12-13 04:25:16,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.75) internal successors, (285), 12 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 04:25:16,296 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 04:25:16,296 INFO L214 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] [2022-12-13 04:25:16,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 04:25:16,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 04:25:16,503 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 04:25:16,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 04:25:16,503 INFO L85 PathProgramCache]: Analyzing trace with hash -2027201930, now seen corresponding path program 1 times [2022-12-13 04:25:16,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 04:25:16,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031210093] [2022-12-13 04:25:16,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 04:25:16,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 04:25:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 04:25:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 04:25:16,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 04:25:16,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031210093] [2022-12-13 04:25:16,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031210093] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 04:25:16,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 04:25:16,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 04:25:16,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440817515] [2022-12-13 04:25:16,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 04:25:16,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 04:25:16,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 04:25:16,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 04:25:16,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 04:25:16,807 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2022-12-13 04:25:16,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 1139 transitions, 19212 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 04:25:16,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 04:25:16,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2022-12-13 04:25:16,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 04:25:32,617 INFO L130 PetriNetUnfolder]: 82887/104833 cut-off events. [2022-12-13 04:25:32,618 INFO L131 PetriNetUnfolder]: For 35518/58434 co-relation queries the response was YES. [2022-12-13 04:25:32,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 964316 conditions, 104833 events. 82887/104833 cut-off events. For 35518/58434 co-relation queries the response was YES. Maximal size of possible extension queue 2338. Compared 534227 event pairs, 3350 based on Foata normal form. 480/71481 useless extension candidates. Maximal degree in co-relation 596233. Up to 104692 conditions per place. [2022-12-13 04:25:33,464 INFO L137 encePairwiseOnDemand]: 51/57 looper letters, 1565 selfloop transitions, 72 changer transitions 36/1689 dead transitions. [2022-12-13 04:25:33,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 1689 transitions, 31940 flow [2022-12-13 04:25:33,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 04:25:33,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 04:25:33,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2022-12-13 04:25:33,465 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7456140350877193 [2022-12-13 04:25:33,466 INFO L295 CegarLoopForPetriNet]: 67 programPoint places, 31 predicate places. [2022-12-13 04:25:33,466 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 1689 transitions, 31940 flow [2022-12-13 04:25:34,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 1653 transitions, 31184 flow [2022-12-13 04:25:34,987 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 04:25:34,987 INFO L89 Accepts]: Start accepts. Operand has 98 places, 1653 transitions, 31184 flow [2022-12-13 04:25:35,001 INFO L95 Accepts]: Finished accepts. [2022-12-13 04:25:35,001 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 04:25:35,002 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 1653 transitions, 31184 flow [2022-12-13 04:25:35,125 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 1653 transitions, 31184 flow [2022-12-13 04:25:35,125 INFO L226 LiptonReduction]: Number of co-enabled transitions 5758 [2022-12-13 04:25:35,196 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 04:25:35,197 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 210 [2022-12-13 04:25:35,197 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 1653 transitions, 31184 flow [2022-12-13 04:25:35,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 04:25:35,198 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 04:25:35,198 INFO L214 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] [2022-12-13 04:25:35,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 04:25:35,198 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 04:25:35,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 04:25:35,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2136590622, now seen corresponding path program 1 times [2022-12-13 04:25:35,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 04:25:35,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541651824] [2022-12-13 04:25:35,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 04:25:35,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 04:25:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 04:25:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 04:25:36,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 04:25:36,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541651824] [2022-12-13 04:25:36,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541651824] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 04:25:36,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762548900] [2022-12-13 04:25:36,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 04:25:36,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 04:25:36,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 04:25:36,572 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 04:25:36,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 04:25:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 04:25:36,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 84 conjunts are in the unsatisfiable core [2022-12-13 04:25:36,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 04:25:37,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 04:25:37,605 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 04:25:37,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 20 [2022-12-13 04:25:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 04:25:37,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 04:25:37,866 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-12-13 04:25:37,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 15 [2022-12-13 04:25:37,877 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-12-13 04:25:37,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 14 [2022-12-13 04:25:38,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 04:25:38,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762548900] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 04:25:38,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 04:25:38,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-12-13 04:25:38,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713683088] [2022-12-13 04:25:38,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 04:25:38,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 04:25:38,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 04:25:38,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 04:25:38,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-12-13 04:25:38,196 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 57 [2022-12-13 04:25:38,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 1653 transitions, 31184 flow. Second operand has 17 states, 17 states have (on average 17.529411764705884) internal successors, (298), 17 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 04:25:38,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 04:25:38,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 57 [2022-12-13 04:25:38,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand