/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 00:32:37,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 00:32:37,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 00:32:37,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 00:32:37,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 00:32:37,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 00:32:37,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 00:32:37,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 00:32:37,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 00:32:37,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 00:32:37,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 00:32:37,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 00:32:37,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 00:32:37,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 00:32:37,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 00:32:37,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 00:32:37,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 00:32:37,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 00:32:37,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 00:32:37,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 00:32:37,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 00:32:37,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 00:32:37,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 00:32:37,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 00:32:37,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 00:32:37,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 00:32:37,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 00:32:37,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 00:32:37,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 00:32:37,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 00:32:37,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 00:32:37,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 00:32:37,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 00:32:37,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 00:32:37,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 00:32:37,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 00:32:37,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 00:32:37,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 00:32:37,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 00:32:37,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 00:32:37,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 00:32:37,185 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-12 00:32:37,219 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 00:32:37,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 00:32:37,221 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 00:32:37,221 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 00:32:37,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 00:32:37,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 00:32:37,223 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 00:32:37,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 00:32:37,223 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 00:32:37,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 00:32:37,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 00:32:37,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 00:32:37,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 00:32:37,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 00:32:37,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 00:32:37,224 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 00:32:37,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 00:32:37,224 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 00:32:37,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 00:32:37,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 00:32:37,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 00:32:37,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 00:32:37,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 00:32:37,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 00:32:37,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 00:32:37,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 00:32:37,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 00:32:37,226 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 00:32:37,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 00:32:37,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 00:32:37,226 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 00:32:37,226 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 00:32:37,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 00:32:37,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 00:32:37,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 00:32:37,574 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 00:32:37,575 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 00:32:37,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2022-12-12 00:32:38,810 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 00:32:39,053 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 00:32:39,054 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2022-12-12 00:32:39,060 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eb5f9e8f/cf52959e3e124409a48cf279eed2fb84/FLAG7c8201812 [2022-12-12 00:32:39,070 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eb5f9e8f/cf52959e3e124409a48cf279eed2fb84 [2022-12-12 00:32:39,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 00:32:39,073 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 00:32:39,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 00:32:39,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 00:32:39,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 00:32:39,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:32:39" (1/1) ... [2022-12-12 00:32:39,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51de1f5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:32:39, skipping insertion in model container [2022-12-12 00:32:39,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:32:39" (1/1) ... [2022-12-12 00:32:39,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 00:32:39,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 00:32:39,230 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:32:39,231 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:32:39,234 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:32:39,236 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:32:39,237 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:32:39,238 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:32:39,241 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:32:39,241 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:32:39,246 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:32:39,246 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:32:39,247 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:32:39,247 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:32:39,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:32:39,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:32:39,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:32:39,250 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:32:39,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:32:39,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:32:39,272 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-misc-4.wvr.c[2950,2963] [2022-12-12 00:32:39,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 00:32:39,289 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 00:32:39,307 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:32:39,308 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:32:39,308 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:32:39,308 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:32:39,309 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:32:39,311 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:32:39,313 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:32:39,314 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:32:39,315 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:32:39,315 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:32:39,316 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:32:39,316 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:32:39,317 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:32:39,319 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:32:39,320 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:32:39,320 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:32:39,321 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:32:39,322 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:32:39,333 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-misc-4.wvr.c[2950,2963] [2022-12-12 00:32:39,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 00:32:39,346 INFO L208 MainTranslator]: Completed translation [2022-12-12 00:32:39,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:32:39 WrapperNode [2022-12-12 00:32:39,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 00:32:39,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 00:32:39,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 00:32:39,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 00:32:39,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:32:39" (1/1) ... [2022-12-12 00:32:39,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:32:39" (1/1) ... [2022-12-12 00:32:39,393 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-12-12 00:32:39,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 00:32:39,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 00:32:39,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 00:32:39,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 00:32:39,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:32:39" (1/1) ... [2022-12-12 00:32:39,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:32:39" (1/1) ... [2022-12-12 00:32:39,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:32:39" (1/1) ... [2022-12-12 00:32:39,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:32:39" (1/1) ... [2022-12-12 00:32:39,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:32:39" (1/1) ... [2022-12-12 00:32:39,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:32:39" (1/1) ... [2022-12-12 00:32:39,425 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:32:39" (1/1) ... [2022-12-12 00:32:39,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:32:39" (1/1) ... [2022-12-12 00:32:39,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 00:32:39,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 00:32:39,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 00:32:39,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 00:32:39,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:32:39" (1/1) ... [2022-12-12 00:32:39,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 00:32:39,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:32:39,465 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) [2022-12-12 00:32:39,495 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 [2022-12-12 00:32:39,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 00:32:39,506 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 00:32:39,507 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 00:32:39,507 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 00:32:39,507 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 00:32:39,507 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 00:32:39,507 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 00:32:39,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 00:32:39,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 00:32:39,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 00:32:39,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 00:32:39,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 00:32:39,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 00:32:39,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 00:32:39,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 00:32:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 00:32:39,511 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 00:32:39,615 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 00:32:39,617 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 00:32:39,846 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 00:32:39,869 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 00:32:39,870 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-12 00:32:39,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:32:39 BoogieIcfgContainer [2022-12-12 00:32:39,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 00:32:39,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 00:32:39,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 00:32:39,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 00:32:39,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 12:32:39" (1/3) ... [2022-12-12 00:32:39,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e5a958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:32:39, skipping insertion in model container [2022-12-12 00:32:39,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:32:39" (2/3) ... [2022-12-12 00:32:39,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e5a958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:32:39, skipping insertion in model container [2022-12-12 00:32:39,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:32:39" (3/3) ... [2022-12-12 00:32:39,883 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2022-12-12 00:32:39,898 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 00:32:39,898 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 00:32:39,898 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 00:32:39,957 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 00:32:40,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 99 transitions, 222 flow [2022-12-12 00:32:40,089 INFO L130 PetriNetUnfolder]: 7/96 cut-off events. [2022-12-12 00:32:40,089 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 00:32:40,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 96 events. 7/96 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2022-12-12 00:32:40,095 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 99 transitions, 222 flow [2022-12-12 00:32:40,098 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 86 transitions, 190 flow [2022-12-12 00:32:40,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 00:32:40,112 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@42ede6c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 00:32:40,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 00:32:40,149 INFO L130 PetriNetUnfolder]: 7/85 cut-off events. [2022-12-12 00:32:40,149 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 00:32:40,149 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:32:40,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:32:40,150 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 00:32:40,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:32:40,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1886510652, now seen corresponding path program 1 times [2022-12-12 00:32:40,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:32:40,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018988324] [2022-12-12 00:32:40,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:32:40,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:32:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:32:40,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:40,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:32:40,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018988324] [2022-12-12 00:32:40,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018988324] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:32:40,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:32:40,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 00:32:40,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856207130] [2022-12-12 00:32:40,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:32:40,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 00:32:40,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:32:40,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 00:32:40,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-12 00:32:40,924 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 99 [2022-12-12 00:32:40,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 86 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 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) [2022-12-12 00:32:40,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:32:40,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 99 [2022-12-12 00:32:40,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:32:41,242 INFO L130 PetriNetUnfolder]: 299/819 cut-off events. [2022-12-12 00:32:41,243 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2022-12-12 00:32:41,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1401 conditions, 819 events. 299/819 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4881 event pairs, 48 based on Foata normal form. 44/750 useless extension candidates. Maximal degree in co-relation 1253. Up to 193 conditions per place. [2022-12-12 00:32:41,254 INFO L137 encePairwiseOnDemand]: 85/99 looper letters, 46 selfloop transitions, 9 changer transitions 30/142 dead transitions. [2022-12-12 00:32:41,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 142 transitions, 508 flow [2022-12-12 00:32:41,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 00:32:41,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 00:32:41,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 721 transitions. [2022-12-12 00:32:41,274 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8092031425364759 [2022-12-12 00:32:41,279 INFO L295 CegarLoopForPetriNet]: 89 programPoint places, 8 predicate places. [2022-12-12 00:32:41,280 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 142 transitions, 508 flow [2022-12-12 00:32:41,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 112 transitions, 382 flow [2022-12-12 00:32:41,288 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 112 transitions, 382 flow [2022-12-12 00:32:41,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 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) [2022-12-12 00:32:41,288 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:32:41,288 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:32:41,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 00:32:41,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 00:32:41,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:32:41,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1911835478, now seen corresponding path program 2 times [2022-12-12 00:32:41,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:32:41,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541627791] [2022-12-12 00:32:41,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:32:41,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:32:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:32:41,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:41,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:32:41,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541627791] [2022-12-12 00:32:41,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541627791] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:32:41,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:32:41,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 00:32:41,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528903244] [2022-12-12 00:32:41,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:32:41,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 00:32:41,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:32:41,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 00:32:41,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-12 00:32:41,616 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 99 [2022-12-12 00:32:41,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 112 transitions, 382 flow. Second operand has 7 states, 7 states have (on average 75.28571428571429) internal successors, (527), 7 states have internal predecessors, (527), 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) [2022-12-12 00:32:41,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:32:41,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 99 [2022-12-12 00:32:41,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:32:41,806 INFO L130 PetriNetUnfolder]: 251/770 cut-off events. [2022-12-12 00:32:41,806 INFO L131 PetriNetUnfolder]: For 386/493 co-relation queries the response was YES. [2022-12-12 00:32:41,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1630 conditions, 770 events. 251/770 cut-off events. For 386/493 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4614 event pairs, 63 based on Foata normal form. 1/680 useless extension candidates. Maximal degree in co-relation 1429. Up to 213 conditions per place. [2022-12-12 00:32:41,813 INFO L137 encePairwiseOnDemand]: 91/99 looper letters, 48 selfloop transitions, 13 changer transitions 0/128 dead transitions. [2022-12-12 00:32:41,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 128 transitions, 567 flow [2022-12-12 00:32:41,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 00:32:41,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 00:32:41,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 549 transitions. [2022-12-12 00:32:41,815 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7922077922077922 [2022-12-12 00:32:41,815 INFO L295 CegarLoopForPetriNet]: 89 programPoint places, 11 predicate places. [2022-12-12 00:32:41,815 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 128 transitions, 567 flow [2022-12-12 00:32:41,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 128 transitions, 567 flow [2022-12-12 00:32:41,821 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 128 transitions, 567 flow [2022-12-12 00:32:41,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.28571428571429) internal successors, (527), 7 states have internal predecessors, (527), 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) [2022-12-12 00:32:41,821 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:32:41,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:32:41,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 00:32:41,822 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 00:32:41,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:32:41,824 INFO L85 PathProgramCache]: Analyzing trace with hash 560850394, now seen corresponding path program 3 times [2022-12-12 00:32:41,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:32:41,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055937376] [2022-12-12 00:32:41,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:32:41,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:32:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:32:42,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:42,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:32:42,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055937376] [2022-12-12 00:32:42,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055937376] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:32:42,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:32:42,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 00:32:42,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961296289] [2022-12-12 00:32:42,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:32:42,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 00:32:42,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:32:42,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 00:32:42,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-12 00:32:42,114 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 99 [2022-12-12 00:32:42,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 128 transitions, 567 flow. Second operand has 7 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 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) [2022-12-12 00:32:42,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:32:42,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 99 [2022-12-12 00:32:42,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:32:42,332 INFO L130 PetriNetUnfolder]: 268/742 cut-off events. [2022-12-12 00:32:42,332 INFO L131 PetriNetUnfolder]: For 776/1190 co-relation queries the response was YES. [2022-12-12 00:32:42,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2008 conditions, 742 events. 268/742 cut-off events. For 776/1190 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4402 event pairs, 52 based on Foata normal form. 7/648 useless extension candidates. Maximal degree in co-relation 1874. Up to 218 conditions per place. [2022-12-12 00:32:42,337 INFO L137 encePairwiseOnDemand]: 88/99 looper letters, 46 selfloop transitions, 7 changer transitions 18/130 dead transitions. [2022-12-12 00:32:42,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 130 transitions, 691 flow [2022-12-12 00:32:42,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 00:32:42,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 00:32:42,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2022-12-12 00:32:42,340 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7564534231200898 [2022-12-12 00:32:42,341 INFO L295 CegarLoopForPetriNet]: 89 programPoint places, 19 predicate places. [2022-12-12 00:32:42,341 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 130 transitions, 691 flow [2022-12-12 00:32:42,347 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 112 transitions, 561 flow [2022-12-12 00:32:42,348 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 112 transitions, 561 flow [2022-12-12 00:32:42,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 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) [2022-12-12 00:32:42,348 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:32:42,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:32:42,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 00:32:42,349 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 00:32:42,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:32:42,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1979112897, now seen corresponding path program 1 times [2022-12-12 00:32:42,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:32:42,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094894850] [2022-12-12 00:32:42,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:32:42,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:32:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:32:42,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:42,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:32:42,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094894850] [2022-12-12 00:32:42,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094894850] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:32:42,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:32:42,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 00:32:42,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693619077] [2022-12-12 00:32:42,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:32:42,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 00:32:42,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:32:42,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 00:32:42,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 00:32:42,561 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 99 [2022-12-12 00:32:42,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 112 transitions, 561 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 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) [2022-12-12 00:32:42,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:32:42,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 99 [2022-12-12 00:32:42,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:32:42,748 INFO L130 PetriNetUnfolder]: 323/809 cut-off events. [2022-12-12 00:32:42,749 INFO L131 PetriNetUnfolder]: For 1252/2257 co-relation queries the response was YES. [2022-12-12 00:32:42,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2621 conditions, 809 events. 323/809 cut-off events. For 1252/2257 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4547 event pairs, 26 based on Foata normal form. 7/722 useless extension candidates. Maximal degree in co-relation 2460. Up to 306 conditions per place. [2022-12-12 00:32:42,756 INFO L137 encePairwiseOnDemand]: 90/99 looper letters, 66 selfloop transitions, 31 changer transitions 14/175 dead transitions. [2022-12-12 00:32:42,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 175 transitions, 1247 flow [2022-12-12 00:32:42,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 00:32:42,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 00:32:42,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2022-12-12 00:32:42,758 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8513708513708513 [2022-12-12 00:32:42,760 INFO L295 CegarLoopForPetriNet]: 89 programPoint places, 19 predicate places. [2022-12-12 00:32:42,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 175 transitions, 1247 flow [2022-12-12 00:32:42,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 161 transitions, 1115 flow [2022-12-12 00:32:42,766 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 161 transitions, 1115 flow [2022-12-12 00:32:42,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 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) [2022-12-12 00:32:42,766 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:32:42,769 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:32:42,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 00:32:42,769 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 00:32:42,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:32:42,775 INFO L85 PathProgramCache]: Analyzing trace with hash 782543877, now seen corresponding path program 2 times [2022-12-12 00:32:42,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:32:42,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451082688] [2022-12-12 00:32:42,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:32:42,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:32:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:32:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:42,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:32:42,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451082688] [2022-12-12 00:32:42,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451082688] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:32:42,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:32:42,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 00:32:42,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098385031] [2022-12-12 00:32:42,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:32:42,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 00:32:42,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:32:42,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 00:32:42,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 00:32:42,933 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 99 [2022-12-12 00:32:42,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 161 transitions, 1115 flow. Second operand has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 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) [2022-12-12 00:32:42,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:32:42,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 99 [2022-12-12 00:32:42,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:32:43,090 INFO L130 PetriNetUnfolder]: 464/1074 cut-off events. [2022-12-12 00:32:43,090 INFO L131 PetriNetUnfolder]: For 3015/4159 co-relation queries the response was YES. [2022-12-12 00:32:43,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3980 conditions, 1074 events. 464/1074 cut-off events. For 3015/4159 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6711 event pairs, 6 based on Foata normal form. 16/969 useless extension candidates. Maximal degree in co-relation 3732. Up to 456 conditions per place. [2022-12-12 00:32:43,101 INFO L137 encePairwiseOnDemand]: 93/99 looper letters, 49 selfloop transitions, 5 changer transitions 0/173 dead transitions. [2022-12-12 00:32:43,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 173 transitions, 1357 flow [2022-12-12 00:32:43,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 00:32:43,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 00:32:43,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 410 transitions. [2022-12-12 00:32:43,103 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8282828282828283 [2022-12-12 00:32:43,105 INFO L295 CegarLoopForPetriNet]: 89 programPoint places, 23 predicate places. [2022-12-12 00:32:43,106 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 173 transitions, 1357 flow [2022-12-12 00:32:43,114 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 173 transitions, 1357 flow [2022-12-12 00:32:43,114 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 173 transitions, 1357 flow [2022-12-12 00:32:43,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 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) [2022-12-12 00:32:43,115 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:32:43,115 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:32:43,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 00:32:43,115 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 00:32:43,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:32:43,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1955768027, now seen corresponding path program 1 times [2022-12-12 00:32:43,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:32:43,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819447942] [2022-12-12 00:32:43,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:32:43,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:32:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:32:43,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:43,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:32:43,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819447942] [2022-12-12 00:32:43,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819447942] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:32:43,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736054385] [2022-12-12 00:32:43,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:32:43,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:32:43,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:32:43,295 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) [2022-12-12 00:32:43,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 00:32:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:32:43,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 00:32:43,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:32:43,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:43,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:32:43,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:43,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736054385] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:32:43,553 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:32:43,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-12-12 00:32:43,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278619924] [2022-12-12 00:32:43,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:32:43,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 00:32:43,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:32:43,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 00:32:43,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-12 00:32:43,555 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 99 [2022-12-12 00:32:43,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 173 transitions, 1357 flow. Second operand has 6 states, 6 states have (on average 79.83333333333333) internal successors, (479), 6 states have internal predecessors, (479), 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) [2022-12-12 00:32:43,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:32:43,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 99 [2022-12-12 00:32:43,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:32:43,825 INFO L130 PetriNetUnfolder]: 623/1481 cut-off events. [2022-12-12 00:32:43,825 INFO L131 PetriNetUnfolder]: For 5145/7443 co-relation queries the response was YES. [2022-12-12 00:32:43,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6193 conditions, 1481 events. 623/1481 cut-off events. For 5145/7443 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10149 event pairs, 11 based on Foata normal form. 34/1389 useless extension candidates. Maximal degree in co-relation 5805. Up to 651 conditions per place. [2022-12-12 00:32:43,840 INFO L137 encePairwiseOnDemand]: 94/99 looper letters, 141 selfloop transitions, 29 changer transitions 17/265 dead transitions. [2022-12-12 00:32:43,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 265 transitions, 2780 flow [2022-12-12 00:32:43,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 00:32:43,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 00:32:43,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 514 transitions. [2022-12-12 00:32:43,843 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8653198653198653 [2022-12-12 00:32:43,845 INFO L295 CegarLoopForPetriNet]: 89 programPoint places, 28 predicate places. [2022-12-12 00:32:43,845 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 265 transitions, 2780 flow [2022-12-12 00:32:43,861 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 248 transitions, 2556 flow [2022-12-12 00:32:43,861 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 248 transitions, 2556 flow [2022-12-12 00:32:43,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.83333333333333) internal successors, (479), 6 states have internal predecessors, (479), 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) [2022-12-12 00:32:43,862 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:32:43,862 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:32:43,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-12 00:32:44,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-12 00:32:44,068 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 00:32:44,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:32:44,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1769064973, now seen corresponding path program 2 times [2022-12-12 00:32:44,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:32:44,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315032283] [2022-12-12 00:32:44,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:32:44,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:32:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:32:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:44,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:32:44,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315032283] [2022-12-12 00:32:44,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315032283] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:32:44,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:32:44,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 00:32:44,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531486993] [2022-12-12 00:32:44,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:32:44,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 00:32:44,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:32:44,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 00:32:44,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 00:32:44,187 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 99 [2022-12-12 00:32:44,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 248 transitions, 2556 flow. Second operand has 5 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 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) [2022-12-12 00:32:44,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:32:44,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 99 [2022-12-12 00:32:44,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:32:44,459 INFO L130 PetriNetUnfolder]: 762/1799 cut-off events. [2022-12-12 00:32:44,459 INFO L131 PetriNetUnfolder]: For 10782/12894 co-relation queries the response was YES. [2022-12-12 00:32:44,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8332 conditions, 1799 events. 762/1799 cut-off events. For 10782/12894 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 13069 event pairs, 43 based on Foata normal form. 8/1663 useless extension candidates. Maximal degree in co-relation 7753. Up to 716 conditions per place. [2022-12-12 00:32:44,476 INFO L137 encePairwiseOnDemand]: 93/99 looper letters, 115 selfloop transitions, 5 changer transitions 0/271 dead transitions. [2022-12-12 00:32:44,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 271 transitions, 3133 flow [2022-12-12 00:32:44,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 00:32:44,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 00:32:44,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 411 transitions. [2022-12-12 00:32:44,478 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8303030303030303 [2022-12-12 00:32:44,479 INFO L295 CegarLoopForPetriNet]: 89 programPoint places, 32 predicate places. [2022-12-12 00:32:44,479 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 271 transitions, 3133 flow [2022-12-12 00:32:44,492 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 271 transitions, 3133 flow [2022-12-12 00:32:44,493 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 271 transitions, 3133 flow [2022-12-12 00:32:44,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 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) [2022-12-12 00:32:44,493 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:32:44,493 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:32:44,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 00:32:44,494 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 00:32:44,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:32:44,494 INFO L85 PathProgramCache]: Analyzing trace with hash 703620524, now seen corresponding path program 1 times [2022-12-12 00:32:44,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:32:44,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075201483] [2022-12-12 00:32:44,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:32:44,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:32:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:32:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:44,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:32:44,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075201483] [2022-12-12 00:32:44,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075201483] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:32:44,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508309688] [2022-12-12 00:32:44,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:32:44,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:32:44,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:32:44,732 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) [2022-12-12 00:32:44,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 00:32:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:32:44,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-12 00:32:44,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:32:45,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:45,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:32:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:45,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508309688] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:32:45,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:32:45,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 14 [2022-12-12 00:32:45,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456542061] [2022-12-12 00:32:45,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:32:45,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 00:32:45,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:32:45,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 00:32:45,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-12-12 00:32:45,126 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 99 [2022-12-12 00:32:45,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 271 transitions, 3133 flow. Second operand has 14 states, 14 states have (on average 71.78571428571429) internal successors, (1005), 14 states have internal predecessors, (1005), 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) [2022-12-12 00:32:45,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:32:45,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 99 [2022-12-12 00:32:45,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:32:45,900 INFO L130 PetriNetUnfolder]: 1465/3264 cut-off events. [2022-12-12 00:32:45,900 INFO L131 PetriNetUnfolder]: For 24540/28894 co-relation queries the response was YES. [2022-12-12 00:32:45,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17743 conditions, 3264 events. 1465/3264 cut-off events. For 24540/28894 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 26602 event pairs, 37 based on Foata normal form. 147/3157 useless extension candidates. Maximal degree in co-relation 17097. Up to 1694 conditions per place. [2022-12-12 00:32:45,928 INFO L137 encePairwiseOnDemand]: 86/99 looper letters, 242 selfloop transitions, 105 changer transitions 90/526 dead transitions. [2022-12-12 00:32:45,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 526 transitions, 7536 flow [2022-12-12 00:32:45,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-12 00:32:45,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-12 00:32:45,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1577 transitions. [2022-12-12 00:32:45,932 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7585377585377585 [2022-12-12 00:32:45,932 INFO L295 CegarLoopForPetriNet]: 89 programPoint places, 52 predicate places. [2022-12-12 00:32:45,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 526 transitions, 7536 flow [2022-12-12 00:32:45,954 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 436 transitions, 6260 flow [2022-12-12 00:32:45,954 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 436 transitions, 6260 flow [2022-12-12 00:32:45,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 71.78571428571429) internal successors, (1005), 14 states have internal predecessors, (1005), 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) [2022-12-12 00:32:45,955 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:32:45,955 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:32:45,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 00:32:46,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-12 00:32:46,161 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 00:32:46,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:32:46,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1190675906, now seen corresponding path program 1 times [2022-12-12 00:32:46,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:32:46,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162858530] [2022-12-12 00:32:46,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:32:46,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:32:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:32:46,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:46,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:32:46,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162858530] [2022-12-12 00:32:46,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162858530] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:32:46,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:32:46,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 00:32:46,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952703751] [2022-12-12 00:32:46,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:32:46,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 00:32:46,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:32:46,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 00:32:46,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-12 00:32:46,401 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 99 [2022-12-12 00:32:46,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 436 transitions, 6260 flow. Second operand has 8 states, 8 states have (on average 71.75) internal successors, (574), 8 states have internal predecessors, (574), 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) [2022-12-12 00:32:46,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:32:46,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 99 [2022-12-12 00:32:46,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:32:47,207 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([239] L47-->L54: Formula: (= (+ v_~pos~0_18 1) v_~pos~0_17) InVars {~pos~0=v_~pos~0_18} OutVars{thread1Thread1of1ForFork0_#t~post1=|v_thread1Thread1of1ForFork0_#t~post1_1|, ~pos~0=v_~pos~0_17} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post1, ~pos~0][195], [130#(and (= ~v_assert~0 thread1Thread1of1ForFork0_~lv_assert~0) (<= ~v_assert~0 (+ (* 256 (div ~v_assert~0 256)) 1)) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), 154#(and (<= (+ (* 256 (div thread2Thread1of1ForFork1_~lv_assert~1 256)) 1) thread2Thread1of1ForFork1_~lv_assert~1) (= ~v_assert~0 thread1Thread1of1ForFork0_~lv_assert~0) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), thread2Thread1of1ForFork1InUse, 18#$Ultimate##0true, 161#(<= (+ (* 256 (div ~d1~0 256)) 1) ~d1~0), thread1Thread1of1ForFork0InUse, thread3Thread1of1ForFork2InUse, 918#(not (<= (mod thread1Thread1of1ForFork0_~lv_assert~0 256) 0)), 131#true, 105#true, 1118#(<= 0 ~pos~0), 81#L81true, 5#L111-4true, 603#(and (= ~v_assert~0 thread2Thread1of1ForFork1_~lv_assert~1) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), 19#L54true, 605#true]) [2022-12-12 00:32:47,207 INFO L382 tUnfolder$Statistics]: this new event has 74 ancestors and is cut-off event [2022-12-12 00:32:47,207 INFO L385 tUnfolder$Statistics]: existing Event has 59 ancestors and is cut-off event [2022-12-12 00:32:47,207 INFO L385 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-12-12 00:32:47,208 INFO L385 tUnfolder$Statistics]: existing Event has 59 ancestors and is cut-off event [2022-12-12 00:32:47,211 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([239] L47-->L54: Formula: (= (+ v_~pos~0_18 1) v_~pos~0_17) InVars {~pos~0=v_~pos~0_18} OutVars{thread1Thread1of1ForFork0_#t~post1=|v_thread1Thread1of1ForFork0_#t~post1_1|, ~pos~0=v_~pos~0_17} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post1, ~pos~0][374], [1125#(and (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 0 ~pos~0)), thread2Thread1of1ForFork1InUse, 161#(<= (+ (* 256 (div ~d1~0 256)) 1) ~d1~0), thread1Thread1of1ForFork0InUse, thread3Thread1of1ForFork2InUse, 918#(not (<= (mod thread1Thread1of1ForFork0_~lv_assert~0 256) 0)), 131#true, 105#true, 81#L81true, 150#(<= (+ (* 256 (div thread2Thread1of1ForFork1_~lv_assert~1 256)) 1) thread2Thread1of1ForFork1_~lv_assert~1), 5#L111-4true, 168#(<= (+ (* 256 (div thread2Thread1of1ForFork1_~lv_assert~1 256)) 1) thread2Thread1of1ForFork1_~lv_assert~1), 93#L92true, 19#L54true, 126#(<= (+ (* 256 (div thread1Thread1of1ForFork0_~lv_assert~0 256)) 1) thread1Thread1of1ForFork0_~lv_assert~0), 605#true]) [2022-12-12 00:32:47,211 INFO L382 tUnfolder$Statistics]: this new event has 75 ancestors and is cut-off event [2022-12-12 00:32:47,211 INFO L385 tUnfolder$Statistics]: existing Event has 60 ancestors and is cut-off event [2022-12-12 00:32:47,211 INFO L385 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-12-12 00:32:47,211 INFO L385 tUnfolder$Statistics]: existing Event has 60 ancestors and is cut-off event [2022-12-12 00:32:47,298 INFO L130 PetriNetUnfolder]: 2363/5137 cut-off events. [2022-12-12 00:32:47,298 INFO L131 PetriNetUnfolder]: For 50124/53357 co-relation queries the response was YES. [2022-12-12 00:32:47,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31423 conditions, 5137 events. 2363/5137 cut-off events. For 50124/53357 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 45176 event pairs, 62 based on Foata normal form. 160/4910 useless extension candidates. Maximal degree in co-relation 30714. Up to 2869 conditions per place. [2022-12-12 00:32:47,344 INFO L137 encePairwiseOnDemand]: 87/99 looper letters, 465 selfloop transitions, 73 changer transitions 79/706 dead transitions. [2022-12-12 00:32:47,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 706 transitions, 11573 flow [2022-12-12 00:32:47,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-12 00:32:47,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-12 00:32:47,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 911 transitions. [2022-12-12 00:32:47,347 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7668350168350169 [2022-12-12 00:32:47,347 INFO L295 CegarLoopForPetriNet]: 89 programPoint places, 60 predicate places. [2022-12-12 00:32:47,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 706 transitions, 11573 flow [2022-12-12 00:32:47,382 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 627 transitions, 10327 flow [2022-12-12 00:32:47,383 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 627 transitions, 10327 flow [2022-12-12 00:32:47,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.75) internal successors, (574), 8 states have internal predecessors, (574), 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) [2022-12-12 00:32:47,383 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:32:47,384 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:32:47,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 00:32:47,384 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 00:32:47,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:32:47,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1454538391, now seen corresponding path program 2 times [2022-12-12 00:32:47,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:32:47,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274044200] [2022-12-12 00:32:47,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:32:47,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:32:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:32:47,493 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:32:47,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:32:47,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274044200] [2022-12-12 00:32:47,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274044200] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:32:47,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:32:47,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 00:32:47,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301110871] [2022-12-12 00:32:47,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:32:47,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 00:32:47,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:32:47,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 00:32:47,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 00:32:47,495 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 99 [2022-12-12 00:32:47,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 627 transitions, 10327 flow. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 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) [2022-12-12 00:32:47,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:32:47,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 99 [2022-12-12 00:32:47,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:32:48,536 INFO L130 PetriNetUnfolder]: 2501/5629 cut-off events. [2022-12-12 00:32:48,536 INFO L131 PetriNetUnfolder]: For 68447/74112 co-relation queries the response was YES. [2022-12-12 00:32:48,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35466 conditions, 5629 events. 2501/5629 cut-off events. For 68447/74112 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 50169 event pairs, 118 based on Foata normal form. 287/5631 useless extension candidates. Maximal degree in co-relation 34472. Up to 3077 conditions per place. [2022-12-12 00:32:48,596 INFO L137 encePairwiseOnDemand]: 94/99 looper letters, 341 selfloop transitions, 5 changer transitions 8/645 dead transitions. [2022-12-12 00:32:48,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 645 transitions, 11634 flow [2022-12-12 00:32:48,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 00:32:48,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 00:32:48,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2022-12-12 00:32:48,598 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8964646464646465 [2022-12-12 00:32:48,598 INFO L295 CegarLoopForPetriNet]: 89 programPoint places, 60 predicate places. [2022-12-12 00:32:48,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 645 transitions, 11634 flow [2022-12-12 00:32:48,646 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 637 transitions, 11526 flow [2022-12-12 00:32:48,647 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 637 transitions, 11526 flow [2022-12-12 00:32:48,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 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) [2022-12-12 00:32:48,647 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:32:48,647 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:32:48,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 00:32:48,648 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 00:32:48,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:32:48,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1944203665, now seen corresponding path program 2 times [2022-12-12 00:32:48,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:32:48,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833689107] [2022-12-12 00:32:48,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:32:48,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:32:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:32:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:32:48,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:32:48,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833689107] [2022-12-12 00:32:48,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833689107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:32:48,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:32:48,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 00:32:48,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985034358] [2022-12-12 00:32:48,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:32:48,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 00:32:48,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:32:48,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 00:32:48,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 00:32:48,769 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 99 [2022-12-12 00:32:48,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 637 transitions, 11526 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 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) [2022-12-12 00:32:48,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:32:48,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 99 [2022-12-12 00:32:48,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:32:49,773 INFO L130 PetriNetUnfolder]: 2277/5326 cut-off events. [2022-12-12 00:32:49,773 INFO L131 PetriNetUnfolder]: For 69254/74426 co-relation queries the response was YES. [2022-12-12 00:32:49,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35204 conditions, 5326 events. 2277/5326 cut-off events. For 69254/74426 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 47734 event pairs, 99 based on Foata normal form. 86/5287 useless extension candidates. Maximal degree in co-relation 34265. Up to 2922 conditions per place. [2022-12-12 00:32:49,829 INFO L137 encePairwiseOnDemand]: 94/99 looper letters, 388 selfloop transitions, 5 changer transitions 5/676 dead transitions. [2022-12-12 00:32:49,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 676 transitions, 13335 flow [2022-12-12 00:32:49,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 00:32:49,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 00:32:49,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2022-12-12 00:32:49,831 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8914141414141414 [2022-12-12 00:32:49,831 INFO L295 CegarLoopForPetriNet]: 89 programPoint places, 63 predicate places. [2022-12-12 00:32:49,831 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 676 transitions, 13335 flow [2022-12-12 00:32:49,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 671 transitions, 13215 flow [2022-12-12 00:32:49,877 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 671 transitions, 13215 flow [2022-12-12 00:32:49,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 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) [2022-12-12 00:32:49,878 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:32:49,878 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:32:49,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-12 00:32:49,878 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 00:32:49,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:32:49,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1113650378, now seen corresponding path program 1 times [2022-12-12 00:32:49,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:32:49,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128579548] [2022-12-12 00:32:49,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:32:49,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:32:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:32:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:50,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:32:50,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128579548] [2022-12-12 00:32:50,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128579548] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:32:50,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895290036] [2022-12-12 00:32:50,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:32:50,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:32:50,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:32:50,303 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 00:32:50,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 00:32:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:32:50,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-12 00:32:50,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:32:50,574 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:50,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:32:50,734 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:50,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895290036] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:32:50,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:32:50,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 18 [2022-12-12 00:32:50,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19711381] [2022-12-12 00:32:50,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:32:50,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 00:32:50,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:32:50,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 00:32:50,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-12-12 00:32:50,737 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 99 [2022-12-12 00:32:50,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 671 transitions, 13215 flow. Second operand has 18 states, 18 states have (on average 62.55555555555556) internal successors, (1126), 18 states have internal predecessors, (1126), 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) [2022-12-12 00:32:50,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:32:50,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 99 [2022-12-12 00:32:50,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:32:53,769 INFO L130 PetriNetUnfolder]: 5090/11043 cut-off events. [2022-12-12 00:32:53,769 INFO L131 PetriNetUnfolder]: For 115452/134111 co-relation queries the response was YES. [2022-12-12 00:32:53,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70473 conditions, 11043 events. 5090/11043 cut-off events. For 115452/134111 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 101423 event pairs, 233 based on Foata normal form. 292/11098 useless extension candidates. Maximal degree in co-relation 69381. Up to 5062 conditions per place. [2022-12-12 00:32:53,863 INFO L137 encePairwiseOnDemand]: 86/99 looper letters, 699 selfloop transitions, 170 changer transitions 272/1217 dead transitions. [2022-12-12 00:32:53,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 1217 transitions, 25218 flow [2022-12-12 00:32:53,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-12 00:32:53,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-12 00:32:53,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1572 transitions. [2022-12-12 00:32:53,869 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6903820816864296 [2022-12-12 00:32:53,870 INFO L295 CegarLoopForPetriNet]: 89 programPoint places, 85 predicate places. [2022-12-12 00:32:53,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 1217 transitions, 25218 flow [2022-12-12 00:32:53,933 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 945 transitions, 20449 flow [2022-12-12 00:32:53,934 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 945 transitions, 20449 flow [2022-12-12 00:32:53,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 62.55555555555556) internal successors, (1126), 18 states have internal predecessors, (1126), 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) [2022-12-12 00:32:53,934 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:32:53,935 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:32:53,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 00:32:54,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:32:54,141 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 00:32:54,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:32:54,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1241886208, now seen corresponding path program 2 times [2022-12-12 00:32:54,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:32:54,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048415461] [2022-12-12 00:32:54,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:32:54,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:32:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:32:54,441 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:54,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:32:54,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048415461] [2022-12-12 00:32:54,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048415461] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:32:54,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145285435] [2022-12-12 00:32:54,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 00:32:54,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:32:54,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:32:54,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 00:32:54,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 00:32:54,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 00:32:54,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:32:54,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-12 00:32:54,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:32:54,682 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:54,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:32:54,798 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:54,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145285435] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:32:54,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:32:54,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 15 [2022-12-12 00:32:54,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195154962] [2022-12-12 00:32:54,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:32:54,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-12 00:32:54,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:32:54,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-12 00:32:54,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-12-12 00:32:54,803 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 99 [2022-12-12 00:32:54,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 945 transitions, 20449 flow. Second operand has 15 states, 15 states have (on average 70.33333333333333) internal successors, (1055), 15 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:32:54,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:32:54,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 99 [2022-12-12 00:32:54,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:32:58,025 INFO L130 PetriNetUnfolder]: 7190/12852 cut-off events. [2022-12-12 00:32:58,025 INFO L131 PetriNetUnfolder]: For 202450/208219 co-relation queries the response was YES. [2022-12-12 00:32:58,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106880 conditions, 12852 events. 7190/12852 cut-off events. For 202450/208219 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 110554 event pairs, 625 based on Foata normal form. 227/12768 useless extension candidates. Maximal degree in co-relation 105979. Up to 6999 conditions per place. [2022-12-12 00:32:58,153 INFO L137 encePairwiseOnDemand]: 84/99 looper letters, 1141 selfloop transitions, 325 changer transitions 80/1674 dead transitions. [2022-12-12 00:32:58,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 1674 transitions, 40012 flow [2022-12-12 00:32:58,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 00:32:58,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 00:32:58,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2732 transitions. [2022-12-12 00:32:58,157 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7262094630515683 [2022-12-12 00:32:58,158 INFO L295 CegarLoopForPetriNet]: 89 programPoint places, 104 predicate places. [2022-12-12 00:32:58,158 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 1674 transitions, 40012 flow [2022-12-12 00:32:58,252 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 1594 transitions, 38446 flow [2022-12-12 00:32:58,252 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 1594 transitions, 38446 flow [2022-12-12 00:32:58,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 70.33333333333333) internal successors, (1055), 15 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 00:32:58,253 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:32:58,253 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:32:58,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-12 00:32:58,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:32:58,458 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 00:32:58,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:32:58,458 INFO L85 PathProgramCache]: Analyzing trace with hash 357509016, now seen corresponding path program 3 times [2022-12-12 00:32:58,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:32:58,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680532747] [2022-12-12 00:32:58,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:32:58,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:32:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:32:58,779 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:58,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:32:58,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680532747] [2022-12-12 00:32:58,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680532747] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:32:58,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105628518] [2022-12-12 00:32:58,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 00:32:58,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:32:58,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:32:58,781 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 00:32:58,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 00:32:58,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-12 00:32:58,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:32:58,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-12 00:32:58,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:32:59,025 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:59,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:32:59,167 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:32:59,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105628518] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:32:59,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:32:59,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 19 [2022-12-12 00:32:59,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685128444] [2022-12-12 00:32:59,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:32:59,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 00:32:59,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:32:59,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 00:32:59,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-12-12 00:32:59,170 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 99 [2022-12-12 00:32:59,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 1594 transitions, 38446 flow. Second operand has 19 states, 19 states have (on average 62.421052631578945) internal successors, (1186), 19 states have internal predecessors, (1186), 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) [2022-12-12 00:32:59,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:32:59,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 99 [2022-12-12 00:32:59,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:33:03,970 INFO L130 PetriNetUnfolder]: 8200/13859 cut-off events. [2022-12-12 00:33:03,970 INFO L131 PetriNetUnfolder]: For 240693/259849 co-relation queries the response was YES. [2022-12-12 00:33:04,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130411 conditions, 13859 events. 8200/13859 cut-off events. For 240693/259849 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 115546 event pairs, 554 based on Foata normal form. 342/13830 useless extension candidates. Maximal degree in co-relation 130250. Up to 7539 conditions per place. [2022-12-12 00:33:04,030 INFO L137 encePairwiseOnDemand]: 86/99 looper letters, 0 selfloop transitions, 0 changer transitions 2075/2075 dead transitions. [2022-12-12 00:33:04,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 2075 transitions, 53042 flow [2022-12-12 00:33:04,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-12 00:33:04,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-12 00:33:04,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1530 transitions. [2022-12-12 00:33:04,032 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6719367588932806 [2022-12-12 00:33:04,033 INFO L295 CegarLoopForPetriNet]: 89 programPoint places, 90 predicate places. [2022-12-12 00:33:04,033 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 2075 transitions, 53042 flow [2022-12-12 00:33:04,058 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-12 00:33:04,059 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-12 00:33:04,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 62.421052631578945) internal successors, (1186), 19 states have internal predecessors, (1186), 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) [2022-12-12 00:33:04,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 00:33:04,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 00:33:04,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 00:33:04,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 00:33:04,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 00:33:04,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-12 00:33:04,269 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 2, 2] [2022-12-12 00:33:04,272 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 00:33:04,272 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 00:33:04,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 12:33:04 BasicIcfg [2022-12-12 00:33:04,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 00:33:04,282 INFO L158 Benchmark]: Toolchain (without parser) took 25208.44ms. Allocated memory was 172.0MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 148.4MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 904.5MB. Max. memory is 8.0GB. [2022-12-12 00:33:04,282 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 172.0MB. Free memory is still 147.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 00:33:04,283 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.67ms. Allocated memory is still 172.0MB. Free memory was 148.4MB in the beginning and 135.2MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 00:33:04,283 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.46ms. Allocated memory is still 172.0MB. Free memory was 135.2MB in the beginning and 133.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 00:33:04,283 INFO L158 Benchmark]: Boogie Preprocessor took 33.42ms. Allocated memory is still 172.0MB. Free memory was 133.3MB in the beginning and 132.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 00:33:04,284 INFO L158 Benchmark]: RCFGBuilder took 443.89ms. Allocated memory is still 172.0MB. Free memory was 132.0MB in the beginning and 117.5MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-12 00:33:04,284 INFO L158 Benchmark]: TraceAbstraction took 24404.50ms. Allocated memory was 172.0MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 116.5MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 873.0MB. Max. memory is 8.0GB. [2022-12-12 00:33:04,285 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 172.0MB. Free memory is still 147.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 270.67ms. Allocated memory is still 172.0MB. Free memory was 148.4MB in the beginning and 135.2MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.46ms. Allocated memory is still 172.0MB. Free memory was 135.2MB in the beginning and 133.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.42ms. Allocated memory is still 172.0MB. Free memory was 133.3MB in the beginning and 132.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 443.89ms. Allocated memory is still 172.0MB. Free memory was 132.0MB in the beginning and 117.5MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 24404.50ms. Allocated memory was 172.0MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 116.5MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 873.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 116]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 120 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.4s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 24.2s, OverallIterations: 14, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 17.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1227 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1227 mSDsluCounter, 1273 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1021 mSDsCounter, 173 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3250 IncrementalHoareTripleChecker+Invalid, 3423 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 173 mSolverCounterUnsat, 252 mSDtfsCounter, 3250 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1028 GetRequests, 809 SyntacticMatches, 20 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38446occurred in iteration=13, InterpolantAutomatonStates: 173, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 62739 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1497 NumberOfCodeBlocks, 1497 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1888 ConstructedInterpolants, 0 QuantifiedInterpolants, 5656 SizeOfPredicates, 36 NumberOfNonLiveVariables, 1068 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 24 InterpolantComputations, 9 PerfectInterpolantSequences, 98/170 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 00:33:04,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...