/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 21:59:38,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 21:59:38,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 21:59:38,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 21:59:38,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 21:59:38,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 21:59:38,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 21:59:38,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 21:59:38,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 21:59:38,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 21:59:38,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 21:59:38,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 21:59:38,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 21:59:38,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 21:59:38,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 21:59:38,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 21:59:38,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 21:59:38,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 21:59:38,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 21:59:38,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 21:59:38,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 21:59:38,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 21:59:38,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 21:59:38,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 21:59:38,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 21:59:38,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 21:59:38,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 21:59:38,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 21:59:38,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 21:59:38,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 21:59:38,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 21:59:38,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 21:59:38,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 21:59:38,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 21:59:38,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 21:59:38,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 21:59:38,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 21:59:38,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 21:59:38,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 21:59:38,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 21:59:38,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 21:59:38,124 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 [2022-12-11 21:59:38,157 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 21:59:38,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 21:59:38,159 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 21:59:38,159 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 21:59:38,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 21:59:38,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 21:59:38,161 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 21:59:38,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 21:59:38,161 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 21:59:38,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 21:59:38,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 21:59:38,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 21:59:38,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 21:59:38,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 21:59:38,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 21:59:38,163 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 21:59:38,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 21:59:38,163 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 21:59:38,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 21:59:38,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 21:59:38,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 21:59:38,164 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 21:59:38,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 21:59:38,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 21:59:38,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 21:59:38,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 21:59:38,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 21:59:38,165 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 21:59:38,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 21:59:38,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 21:59:38,165 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 21:59:38,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-11 21:59:38,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 21:59:38,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 21:59:38,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 21:59:38,509 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 21:59:38,509 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 21:59:38,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c [2022-12-11 21:59:39,592 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 21:59:39,828 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 21:59:39,828 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c [2022-12-11 21:59:39,834 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e13fcb51/68a0353e7b534ee29dfac26d324a0f69/FLAG5513609d5 [2022-12-11 21:59:39,845 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e13fcb51/68a0353e7b534ee29dfac26d324a0f69 [2022-12-11 21:59:39,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 21:59:39,848 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 21:59:39,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 21:59:39,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 21:59:39,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 21:59:39,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 09:59:39" (1/1) ... [2022-12-11 21:59:39,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75c8b8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:59:39, skipping insertion in model container [2022-12-11 21:59:39,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 09:59:39" (1/1) ... [2022-12-11 21:59:39,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 21:59:39,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 21:59:40,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:59:40,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:59:40,014 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:59:40,016 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:59:40,017 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:59:40,020 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:59:40,021 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:59:40,028 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:59:40,031 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:59:40,032 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:59:40,032 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:59:40,033 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:59:40,035 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:59:40,037 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:59:40,038 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:59:40,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:59:40,054 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2022-12-11 21:59:40,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 21:59:40,081 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 21:59:40,102 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:59:40,104 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:59:40,105 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:59:40,105 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:59:40,106 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:59:40,107 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:59:40,108 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:59:40,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:59:40,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:59:40,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:59:40,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:59:40,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:59:40,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:59:40,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:59:40,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:59:40,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:59:40,124 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2022-12-11 21:59:40,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 21:59:40,154 INFO L208 MainTranslator]: Completed translation [2022-12-11 21:59:40,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:59:40 WrapperNode [2022-12-11 21:59:40,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 21:59:40,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 21:59:40,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 21:59:40,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 21:59:40,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:59:40" (1/1) ... [2022-12-11 21:59:40,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:59:40" (1/1) ... [2022-12-11 21:59:40,222 INFO L138 Inliner]: procedures = 25, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 317 [2022-12-11 21:59:40,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 21:59:40,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 21:59:40,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 21:59:40,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 21:59:40,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:59:40" (1/1) ... [2022-12-11 21:59:40,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:59:40" (1/1) ... [2022-12-11 21:59:40,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:59:40" (1/1) ... [2022-12-11 21:59:40,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:59:40" (1/1) ... [2022-12-11 21:59:40,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:59:40" (1/1) ... [2022-12-11 21:59:40,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:59:40" (1/1) ... [2022-12-11 21:59:40,255 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:59:40" (1/1) ... [2022-12-11 21:59:40,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:59:40" (1/1) ... [2022-12-11 21:59:40,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 21:59:40,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 21:59:40,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 21:59:40,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 21:59:40,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:59:40" (1/1) ... [2022-12-11 21:59:40,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 21:59:40,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 21:59:40,290 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) [2022-12-11 21:59:40,314 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 [2022-12-11 21:59:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 21:59:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 21:59:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 21:59:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 21:59:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 21:59:40,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 21:59:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-11 21:59:40,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-11 21:59:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-11 21:59:40,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-11 21:59:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 21:59:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 21:59:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 21:59:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-11 21:59:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 21:59:40,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 21:59:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 21:59:40,338 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 21:59:40,513 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 21:59:40,515 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 21:59:40,910 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 21:59:41,034 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 21:59:41,034 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-11 21:59:41,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 09:59:41 BoogieIcfgContainer [2022-12-11 21:59:41,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 21:59:41,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 21:59:41,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 21:59:41,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 21:59:41,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 09:59:39" (1/3) ... [2022-12-11 21:59:41,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e34d03a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 09:59:41, skipping insertion in model container [2022-12-11 21:59:41,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:59:40" (2/3) ... [2022-12-11 21:59:41,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e34d03a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 09:59:41, skipping insertion in model container [2022-12-11 21:59:41,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 09:59:41" (3/3) ... [2022-12-11 21:59:41,044 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2022-12-11 21:59:41,061 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 21:59:41,061 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 21:59:41,061 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 21:59:41,183 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-11 21:59:41,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 256 transitions, 536 flow [2022-12-11 21:59:41,360 INFO L130 PetriNetUnfolder]: 25/253 cut-off events. [2022-12-11 21:59:41,360 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 21:59:41,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 253 events. 25/253 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 206 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 215. Up to 4 conditions per place. [2022-12-11 21:59:41,368 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 256 transitions, 536 flow [2022-12-11 21:59:41,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 243 transitions, 504 flow [2022-12-11 21:59:41,393 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 21:59:41,405 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;@2e877aa4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 21:59:41,405 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-11 21:59:41,470 INFO L130 PetriNetUnfolder]: 25/242 cut-off events. [2022-12-11 21:59:41,470 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 21:59:41,471 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:59:41,472 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:59:41,473 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)] === [2022-12-11 21:59:41,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:59:41,479 INFO L85 PathProgramCache]: Analyzing trace with hash -877186411, now seen corresponding path program 1 times [2022-12-11 21:59:41,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:59:41,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296541068] [2022-12-11 21:59:41,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:59:41,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:59:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:59:41,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 21:59:41,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:59:41,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296541068] [2022-12-11 21:59:41,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296541068] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:59:41,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:59:41,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-11 21:59:41,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384390033] [2022-12-11 21:59:41,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:59:41,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-11 21:59:41,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:59:41,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-11 21:59:41,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-11 21:59:41,915 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 256 [2022-12-11 21:59:41,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 243 transitions, 504 flow. Second operand has 2 states, 2 states have (on average 229.5) internal successors, (459), 2 states have internal predecessors, (459), 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) [2022-12-11 21:59:41,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:59:41,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 256 [2022-12-11 21:59:41,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:59:42,083 INFO L130 PetriNetUnfolder]: 138/555 cut-off events. [2022-12-11 21:59:42,083 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-12-11 21:59:42,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 555 events. 138/555 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1963 event pairs, 55 based on Foata normal form. 107/597 useless extension candidates. Maximal degree in co-relation 559. Up to 180 conditions per place. [2022-12-11 21:59:42,094 INFO L137 encePairwiseOnDemand]: 239/256 looper letters, 13 selfloop transitions, 0 changer transitions 8/226 dead transitions. [2022-12-11 21:59:42,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 226 transitions, 496 flow [2022-12-11 21:59:42,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-11 21:59:42,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-11 21:59:42,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 480 transitions. [2022-12-11 21:59:42,112 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9375 [2022-12-11 21:59:42,118 INFO L295 CegarLoopForPetriNet]: 228 programPoint places, 1 predicate places. [2022-12-11 21:59:42,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 229 places, 226 transitions, 496 flow [2022-12-11 21:59:42,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 218 transitions, 480 flow [2022-12-11 21:59:42,128 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 218 transitions, 480 flow [2022-12-11 21:59:42,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 229.5) internal successors, (459), 2 states have internal predecessors, (459), 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) [2022-12-11 21:59:42,129 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:59:42,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:59:42,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 21:59:42,130 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)] === [2022-12-11 21:59:42,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:59:42,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1221562857, now seen corresponding path program 1 times [2022-12-11 21:59:42,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:59:42,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917375285] [2022-12-11 21:59:42,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:59:42,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:59:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:59:42,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 21:59:42,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:59:42,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917375285] [2022-12-11 21:59:42,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917375285] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:59:42,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:59:42,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 21:59:42,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522925083] [2022-12-11 21:59:42,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:59:42,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 21:59:42,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:59:42,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 21:59:42,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 21:59:42,698 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 256 [2022-12-11 21:59:42,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 218 transitions, 480 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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) [2022-12-11 21:59:42,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:59:42,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 256 [2022-12-11 21:59:42,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:59:42,852 INFO L130 PetriNetUnfolder]: 128/498 cut-off events. [2022-12-11 21:59:42,852 INFO L131 PetriNetUnfolder]: For 116/220 co-relation queries the response was YES. [2022-12-11 21:59:42,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 896 conditions, 498 events. 128/498 cut-off events. For 116/220 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1628 event pairs, 21 based on Foata normal form. 8/464 useless extension candidates. Maximal degree in co-relation 671. Up to 174 conditions per place. [2022-12-11 21:59:42,859 INFO L137 encePairwiseOnDemand]: 253/256 looper letters, 22 selfloop transitions, 2 changer transitions 0/225 dead transitions. [2022-12-11 21:59:42,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 225 transitions, 562 flow [2022-12-11 21:59:42,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 21:59:42,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 21:59:42,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 688 transitions. [2022-12-11 21:59:42,861 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8958333333333334 [2022-12-11 21:59:42,862 INFO L295 CegarLoopForPetriNet]: 228 programPoint places, -5 predicate places. [2022-12-11 21:59:42,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 225 transitions, 562 flow [2022-12-11 21:59:42,867 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 225 transitions, 562 flow [2022-12-11 21:59:42,868 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 225 transitions, 562 flow [2022-12-11 21:59:42,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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) [2022-12-11 21:59:42,868 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:59:42,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:59:42,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 21:59:42,869 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)] === [2022-12-11 21:59:42,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:59:42,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1872149455, now seen corresponding path program 2 times [2022-12-11 21:59:42,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:59:42,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70252431] [2022-12-11 21:59:42,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:59:42,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:59:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:59:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 21:59:43,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:59:43,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70252431] [2022-12-11 21:59:43,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70252431] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:59:43,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:59:43,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-11 21:59:43,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947422426] [2022-12-11 21:59:43,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:59:43,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 21:59:43,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:59:43,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 21:59:43,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-11 21:59:43,154 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 256 [2022-12-11 21:59:43,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 225 transitions, 562 flow. Second operand has 5 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 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) [2022-12-11 21:59:43,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:59:43,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 256 [2022-12-11 21:59:43,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:59:43,417 INFO L130 PetriNetUnfolder]: 233/966 cut-off events. [2022-12-11 21:59:43,417 INFO L131 PetriNetUnfolder]: For 574/904 co-relation queries the response was YES. [2022-12-11 21:59:43,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1994 conditions, 966 events. 233/966 cut-off events. For 574/904 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5029 event pairs, 33 based on Foata normal form. 1/843 useless extension candidates. Maximal degree in co-relation 1610. Up to 297 conditions per place. [2022-12-11 21:59:43,426 INFO L137 encePairwiseOnDemand]: 251/256 looper letters, 64 selfloop transitions, 3 changer transitions 9/247 dead transitions. [2022-12-11 21:59:43,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 247 transitions, 855 flow [2022-12-11 21:59:43,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 21:59:43,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 21:59:43,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 978 transitions. [2022-12-11 21:59:43,429 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7640625 [2022-12-11 21:59:43,430 INFO L295 CegarLoopForPetriNet]: 228 programPoint places, -1 predicate places. [2022-12-11 21:59:43,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 247 transitions, 855 flow [2022-12-11 21:59:43,436 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 238 transitions, 783 flow [2022-12-11 21:59:43,437 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 238 transitions, 783 flow [2022-12-11 21:59:43,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 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) [2022-12-11 21:59:43,437 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:59:43,438 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:59:43,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 21:59:43,438 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)] === [2022-12-11 21:59:43,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:59:43,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1564699319, now seen corresponding path program 1 times [2022-12-11 21:59:43,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:59:43,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458026570] [2022-12-11 21:59:43,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:59:43,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:59:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:59:43,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 21:59:43,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:59:43,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458026570] [2022-12-11 21:59:43,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458026570] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:59:43,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:59:43,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 21:59:43,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930352277] [2022-12-11 21:59:43,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:59:43,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 21:59:43,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:59:43,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 21:59:43,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 21:59:43,544 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 256 [2022-12-11 21:59:43,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 238 transitions, 783 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 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) [2022-12-11 21:59:43,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:59:43,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 256 [2022-12-11 21:59:43,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:59:43,743 INFO L130 PetriNetUnfolder]: 316/1031 cut-off events. [2022-12-11 21:59:43,743 INFO L131 PetriNetUnfolder]: For 1087/1201 co-relation queries the response was YES. [2022-12-11 21:59:43,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 1031 events. 316/1031 cut-off events. For 1087/1201 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5015 event pairs, 58 based on Foata normal form. 0/917 useless extension candidates. Maximal degree in co-relation 2225. Up to 320 conditions per place. [2022-12-11 21:59:43,753 INFO L137 encePairwiseOnDemand]: 253/256 looper letters, 53 selfloop transitions, 5 changer transitions 0/257 dead transitions. [2022-12-11 21:59:43,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 257 transitions, 1063 flow [2022-12-11 21:59:43,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 21:59:43,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 21:59:43,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 684 transitions. [2022-12-11 21:59:43,755 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.890625 [2022-12-11 21:59:43,757 INFO L295 CegarLoopForPetriNet]: 228 programPoint places, -1 predicate places. [2022-12-11 21:59:43,757 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 257 transitions, 1063 flow [2022-12-11 21:59:43,764 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 227 places, 257 transitions, 1063 flow [2022-12-11 21:59:43,765 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 257 transitions, 1063 flow [2022-12-11 21:59:43,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 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) [2022-12-11 21:59:43,766 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:59:43,766 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:59:43,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 21:59:43,767 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)] === [2022-12-11 21:59:43,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:59:43,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1699401397, now seen corresponding path program 1 times [2022-12-11 21:59:43,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:59:43,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178222105] [2022-12-11 21:59:43,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:59:43,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:59:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:59:44,608 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 21:59:44,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:59:44,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178222105] [2022-12-11 21:59:44,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178222105] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 21:59:44,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651048365] [2022-12-11 21:59:44,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:59:44,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 21:59:44,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 21:59:44,613 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) [2022-12-11 21:59:44,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 21:59:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:59:44,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-11 21:59:44,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 21:59:44,927 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 21:59:44,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 21:59:44,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651048365] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:59:44,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 21:59:44,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2022-12-11 21:59:44,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237298478] [2022-12-11 21:59:44,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:59:44,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 21:59:44,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:59:44,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 21:59:44,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-11 21:59:44,930 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 256 [2022-12-11 21:59:44,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 257 transitions, 1063 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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) [2022-12-11 21:59:44,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:59:44,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 256 [2022-12-11 21:59:44,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:59:45,144 INFO L130 PetriNetUnfolder]: 373/1230 cut-off events. [2022-12-11 21:59:45,145 INFO L131 PetriNetUnfolder]: For 2333/2350 co-relation queries the response was YES. [2022-12-11 21:59:45,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3646 conditions, 1230 events. 373/1230 cut-off events. For 2333/2350 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 6681 event pairs, 81 based on Foata normal form. 19/1104 useless extension candidates. Maximal degree in co-relation 3220. Up to 432 conditions per place. [2022-12-11 21:59:45,157 INFO L137 encePairwiseOnDemand]: 253/256 looper letters, 66 selfloop transitions, 3 changer transitions 0/269 dead transitions. [2022-12-11 21:59:45,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 269 transitions, 1323 flow [2022-12-11 21:59:45,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 21:59:45,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 21:59:45,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2022-12-11 21:59:45,159 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8893229166666666 [2022-12-11 21:59:45,161 INFO L295 CegarLoopForPetriNet]: 228 programPoint places, 1 predicate places. [2022-12-11 21:59:45,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 229 places, 269 transitions, 1323 flow [2022-12-11 21:59:45,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 269 transitions, 1323 flow [2022-12-11 21:59:45,171 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 269 transitions, 1323 flow [2022-12-11 21:59:45,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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) [2022-12-11 21:59:45,172 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:59:45,172 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:59:45,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-11 21:59:45,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 21:59:45,384 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)] === [2022-12-11 21:59:45,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:59:45,385 INFO L85 PathProgramCache]: Analyzing trace with hash -967266963, now seen corresponding path program 2 times [2022-12-11 21:59:45,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:59:45,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243780817] [2022-12-11 21:59:45,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:59:45,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:59:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:59:45,547 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 21:59:45,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:59:45,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243780817] [2022-12-11 21:59:45,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243780817] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 21:59:45,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923422533] [2022-12-11 21:59:45,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 21:59:45,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 21:59:45,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 21:59:45,549 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) [2022-12-11 21:59:45,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 21:59:45,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-11 21:59:45,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 21:59:45,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-11 21:59:45,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 21:59:45,917 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-11 21:59:45,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 21:59:45,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923422533] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:59:45,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 21:59:45,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2022-12-11 21:59:45,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534115991] [2022-12-11 21:59:45,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:59:45,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 21:59:45,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:59:45,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 21:59:45,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-11 21:59:45,921 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 256 [2022-12-11 21:59:45,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 269 transitions, 1323 flow. Second operand has 6 states, 6 states have (on average 193.5) internal successors, (1161), 6 states have internal predecessors, (1161), 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) [2022-12-11 21:59:45,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:59:45,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 256 [2022-12-11 21:59:45,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:59:46,295 INFO L130 PetriNetUnfolder]: 487/1662 cut-off events. [2022-12-11 21:59:46,295 INFO L131 PetriNetUnfolder]: For 4865/4900 co-relation queries the response was YES. [2022-12-11 21:59:46,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5376 conditions, 1662 events. 487/1662 cut-off events. For 4865/4900 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 10133 event pairs, 103 based on Foata normal form. 24/1471 useless extension candidates. Maximal degree in co-relation 3587. Up to 554 conditions per place. [2022-12-11 21:59:46,309 INFO L137 encePairwiseOnDemand]: 247/256 looper letters, 97 selfloop transitions, 6 changer transitions 25/298 dead transitions. [2022-12-11 21:59:46,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 298 transitions, 1910 flow [2022-12-11 21:59:46,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 21:59:46,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 21:59:46,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1374 transitions. [2022-12-11 21:59:46,312 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7667410714285714 [2022-12-11 21:59:46,313 INFO L295 CegarLoopForPetriNet]: 228 programPoint places, 7 predicate places. [2022-12-11 21:59:46,313 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 298 transitions, 1910 flow [2022-12-11 21:59:46,323 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 273 transitions, 1537 flow [2022-12-11 21:59:46,323 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 273 transitions, 1537 flow [2022-12-11 21:59:46,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.5) internal successors, (1161), 6 states have internal predecessors, (1161), 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) [2022-12-11 21:59:46,324 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:59:46,325 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:59:46,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-11 21:59:46,531 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,SelfDestructingSolverStorable5 [2022-12-11 21:59:46,531 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)] === [2022-12-11 21:59:46,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:59:46,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1951999616, now seen corresponding path program 1 times [2022-12-11 21:59:46,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:59:46,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792559904] [2022-12-11 21:59:46,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:59:46,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:59:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:59:46,676 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 21:59:46,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:59:46,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792559904] [2022-12-11 21:59:46,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792559904] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 21:59:46,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384904255] [2022-12-11 21:59:46,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:59:46,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 21:59:46,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 21:59:46,684 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) [2022-12-11 21:59:46,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-11 21:59:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:59:46,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-11 21:59:46,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 21:59:46,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 8 [2022-12-11 21:59:46,908 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 21:59:46,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 21:59:46,949 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 21:59:46,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384904255] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 21:59:46,949 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 21:59:46,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-12-11 21:59:46,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230235096] [2022-12-11 21:59:46,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 21:59:46,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 21:59:46,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:59:46,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 21:59:46,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-11 21:59:46,952 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 256 [2022-12-11 21:59:46,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 273 transitions, 1537 flow. Second operand has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 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) [2022-12-11 21:59:46,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:59:46,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 256 [2022-12-11 21:59:46,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:59:48,076 INFO L130 PetriNetUnfolder]: 2393/5572 cut-off events. [2022-12-11 21:59:48,076 INFO L131 PetriNetUnfolder]: For 26763/26966 co-relation queries the response was YES. [2022-12-11 21:59:48,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21502 conditions, 5572 events. 2393/5572 cut-off events. For 26763/26966 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 42464 event pairs, 345 based on Foata normal form. 0/5064 useless extension candidates. Maximal degree in co-relation 20775. Up to 2027 conditions per place. [2022-12-11 21:59:48,122 INFO L137 encePairwiseOnDemand]: 249/256 looper letters, 172 selfloop transitions, 17 changer transitions 34/411 dead transitions. [2022-12-11 21:59:48,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 411 transitions, 3779 flow [2022-12-11 21:59:48,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 21:59:48,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 21:59:48,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1517 transitions. [2022-12-11 21:59:48,126 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8465401785714286 [2022-12-11 21:59:48,126 INFO L295 CegarLoopForPetriNet]: 228 programPoint places, 12 predicate places. [2022-12-11 21:59:48,126 INFO L82 GeneralOperation]: Start removeDead. Operand has 240 places, 411 transitions, 3779 flow [2022-12-11 21:59:48,151 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 240 places, 377 transitions, 3214 flow [2022-12-11 21:59:48,152 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 377 transitions, 3214 flow [2022-12-11 21:59:48,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 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) [2022-12-11 21:59:48,153 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:59:48,153 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:59:48,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-11 21:59:48,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 21:59:48,361 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)] === [2022-12-11 21:59:48,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:59:48,361 INFO L85 PathProgramCache]: Analyzing trace with hash 747168398, now seen corresponding path program 2 times [2022-12-11 21:59:48,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:59:48,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24223694] [2022-12-11 21:59:48,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:59:48,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:59:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:59:48,880 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 21:59:48,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:59:48,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24223694] [2022-12-11 21:59:48,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24223694] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 21:59:48,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366338719] [2022-12-11 21:59:48,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 21:59:48,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 21:59:48,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 21:59:48,888 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) [2022-12-11 21:59:48,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-11 21:59:49,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-11 21:59:49,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 21:59:49,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-11 21:59:49,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 21:59:49,260 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-11 21:59:49,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 21:59:49,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366338719] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:59:49,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 21:59:49,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2022-12-11 21:59:49,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671763688] [2022-12-11 21:59:49,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:59:49,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 21:59:49,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:59:49,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 21:59:49,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:59:49,269 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 256 [2022-12-11 21:59:49,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 377 transitions, 3214 flow. Second operand has 6 states, 6 states have (on average 194.16666666666666) internal successors, (1165), 6 states have internal predecessors, (1165), 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) [2022-12-11 21:59:49,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:59:49,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 256 [2022-12-11 21:59:49,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:59:50,706 INFO L130 PetriNetUnfolder]: 2633/7100 cut-off events. [2022-12-11 21:59:50,706 INFO L131 PetriNetUnfolder]: For 42752/43048 co-relation queries the response was YES. [2022-12-11 21:59:50,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27106 conditions, 7100 events. 2633/7100 cut-off events. For 42752/43048 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 60550 event pairs, 364 based on Foata normal form. 155/6561 useless extension candidates. Maximal degree in co-relation 19961. Up to 2194 conditions per place. [2022-12-11 21:59:50,756 INFO L137 encePairwiseOnDemand]: 246/256 looper letters, 182 selfloop transitions, 8 changer transitions 85/466 dead transitions. [2022-12-11 21:59:50,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 466 transitions, 5069 flow [2022-12-11 21:59:50,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 21:59:50,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 21:59:50,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1760 transitions. [2022-12-11 21:59:50,761 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7638888888888888 [2022-12-11 21:59:50,761 INFO L295 CegarLoopForPetriNet]: 228 programPoint places, 20 predicate places. [2022-12-11 21:59:50,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 466 transitions, 5069 flow [2022-12-11 21:59:50,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 246 places, 381 transitions, 3612 flow [2022-12-11 21:59:50,790 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 381 transitions, 3612 flow [2022-12-11 21:59:50,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 194.16666666666666) internal successors, (1165), 6 states have internal predecessors, (1165), 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) [2022-12-11 21:59:50,791 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:59:50,791 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:59:50,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-11 21:59:50,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 21:59:50,997 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)] === [2022-12-11 21:59:50,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:59:50,998 INFO L85 PathProgramCache]: Analyzing trace with hash 742056361, now seen corresponding path program 1 times [2022-12-11 21:59:50,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:59:50,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616643628] [2022-12-11 21:59:50,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:59:50,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:59:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:59:51,444 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 21:59:51,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:59:51,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616643628] [2022-12-11 21:59:51,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616643628] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 21:59:51,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469821837] [2022-12-11 21:59:51,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:59:51,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 21:59:51,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 21:59:51,447 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) [2022-12-11 21:59:51,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-11 21:59:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:59:51,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-11 21:59:51,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 21:59:51,834 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-11 21:59:51,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 21:59:51,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469821837] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:59:51,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 21:59:51,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-12-11 21:59:51,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872175794] [2022-12-11 21:59:51,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:59:51,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 21:59:51,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:59:51,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 21:59:51,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-12-11 21:59:51,837 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 256 [2022-12-11 21:59:51,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 381 transitions, 3612 flow. Second operand has 6 states, 6 states have (on average 194.0) internal successors, (1164), 6 states have internal predecessors, (1164), 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) [2022-12-11 21:59:51,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:59:51,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 256 [2022-12-11 21:59:51,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:59:53,189 INFO L130 PetriNetUnfolder]: 2383/6558 cut-off events. [2022-12-11 21:59:53,189 INFO L131 PetriNetUnfolder]: For 49873/50231 co-relation queries the response was YES. [2022-12-11 21:59:53,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26662 conditions, 6558 events. 2383/6558 cut-off events. For 49873/50231 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 54155 event pairs, 370 based on Foata normal form. 154/6059 useless extension candidates. Maximal degree in co-relation 21717. Up to 1940 conditions per place. [2022-12-11 21:59:53,233 INFO L137 encePairwiseOnDemand]: 245/256 looper letters, 190 selfloop transitions, 8 changer transitions 89/474 dead transitions. [2022-12-11 21:59:53,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 474 transitions, 5506 flow [2022-12-11 21:59:53,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 21:59:53,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 21:59:53,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1763 transitions. [2022-12-11 21:59:53,238 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7651909722222222 [2022-12-11 21:59:53,239 INFO L295 CegarLoopForPetriNet]: 228 programPoint places, 26 predicate places. [2022-12-11 21:59:53,239 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 474 transitions, 5506 flow [2022-12-11 21:59:53,322 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 385 transitions, 4034 flow [2022-12-11 21:59:53,322 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 385 transitions, 4034 flow [2022-12-11 21:59:53,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 194.0) internal successors, (1164), 6 states have internal predecessors, (1164), 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) [2022-12-11 21:59:53,323 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:59:53,323 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:59:53,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-11 21:59:53,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 21:59:53,530 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)] === [2022-12-11 21:59:53,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:59:53,530 INFO L85 PathProgramCache]: Analyzing trace with hash 751247836, now seen corresponding path program 1 times [2022-12-11 21:59:53,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:59:53,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564459180] [2022-12-11 21:59:53,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:59:53,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:59:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:59:53,944 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-11 21:59:53,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:59:53,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564459180] [2022-12-11 21:59:53,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564459180] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 21:59:53,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461337752] [2022-12-11 21:59:53,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:59:53,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 21:59:53,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 21:59:53,947 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 21:59:53,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-11 21:59:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:59:54,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-11 21:59:54,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 21:59:54,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-12-11 21:59:54,621 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-11 21:59:54,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 21:59:54,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2022-12-11 21:59:55,227 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-11 21:59:55,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461337752] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 21:59:55,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 21:59:55,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-12-11 21:59:55,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179699911] [2022-12-11 21:59:55,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 21:59:55,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-11 21:59:55,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:59:55,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-11 21:59:55,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2022-12-11 21:59:55,233 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 256 [2022-12-11 21:59:55,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 385 transitions, 4034 flow. Second operand has 28 states, 28 states have (on average 144.64285714285714) internal successors, (4050), 28 states have internal predecessors, (4050), 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) [2022-12-11 21:59:55,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:59:55,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 256 [2022-12-11 21:59:55,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:59:59,739 INFO L130 PetriNetUnfolder]: 4877/13239 cut-off events. [2022-12-11 21:59:59,739 INFO L131 PetriNetUnfolder]: For 120138/122592 co-relation queries the response was YES. [2022-12-11 21:59:59,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61372 conditions, 13239 events. 4877/13239 cut-off events. For 120138/122592 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 131507 event pairs, 590 based on Foata normal form. 855/12818 useless extension candidates. Maximal degree in co-relation 33773. Up to 4205 conditions per place. [2022-12-11 21:59:59,830 INFO L137 encePairwiseOnDemand]: 211/256 looper letters, 375 selfloop transitions, 125 changer transitions 368/990 dead transitions. [2022-12-11 21:59:59,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 990 transitions, 14871 flow [2022-12-11 21:59:59,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-12-11 21:59:59,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2022-12-11 21:59:59,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 9025 transitions. [2022-12-11 21:59:59,850 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5595858134920635 [2022-12-11 21:59:59,850 INFO L295 CegarLoopForPetriNet]: 228 programPoint places, 86 predicate places. [2022-12-11 21:59:59,851 INFO L82 GeneralOperation]: Start removeDead. Operand has 314 places, 990 transitions, 14871 flow [2022-12-11 21:59:59,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 311 places, 622 transitions, 7780 flow [2022-12-11 21:59:59,892 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 622 transitions, 7780 flow [2022-12-11 21:59:59,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 144.64285714285714) internal successors, (4050), 28 states have internal predecessors, (4050), 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) [2022-12-11 21:59:59,894 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:59:59,895 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:59:59,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-11 22:00:00,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:00:00,102 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)] === [2022-12-11 22:00:00,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:00:00,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1196737742, now seen corresponding path program 2 times [2022-12-11 22:00:00,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:00:00,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641390661] [2022-12-11 22:00:00,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:00:00,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:00:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:00:00,644 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-11 22:00:00,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:00:00,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641390661] [2022-12-11 22:00:00,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641390661] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:00:00,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077794571] [2022-12-11 22:00:00,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 22:00:00,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:00:00,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:00:00,648 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 22:00:00,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-11 22:00:00,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 22:00:00,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 22:00:00,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-11 22:00:00,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:00:01,388 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-11 22:00:01,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 22:00:01,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2022-12-11 22:00:02,113 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-11 22:00:02,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077794571] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 22:00:02,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 22:00:02,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 30 [2022-12-11 22:00:02,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67777635] [2022-12-11 22:00:02,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 22:00:02,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 22:00:02,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:00:02,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 22:00:02,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2022-12-11 22:00:02,119 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 256 [2022-12-11 22:00:02,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 622 transitions, 7780 flow. Second operand has 30 states, 30 states have (on average 146.16666666666666) internal successors, (4385), 30 states have internal predecessors, (4385), 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) [2022-12-11 22:00:02,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:00:02,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 256 [2022-12-11 22:00:02,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:00:05,150 INFO L130 PetriNetUnfolder]: 1328/5483 cut-off events. [2022-12-11 22:00:05,151 INFO L131 PetriNetUnfolder]: For 29803/30506 co-relation queries the response was YES. [2022-12-11 22:00:05,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23410 conditions, 5483 events. 1328/5483 cut-off events. For 29803/30506 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 50821 event pairs, 231 based on Foata normal form. 115/5108 useless extension candidates. Maximal degree in co-relation 14599. Up to 1358 conditions per place. [2022-12-11 22:00:05,173 INFO L137 encePairwiseOnDemand]: 211/256 looper letters, 0 selfloop transitions, 0 changer transitions 548/548 dead transitions. [2022-12-11 22:00:05,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 548 transitions, 7135 flow [2022-12-11 22:00:05,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-12-11 22:00:05,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2022-12-11 22:00:05,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 8475 transitions. [2022-12-11 22:00:05,192 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5611096398305084 [2022-12-11 22:00:05,192 INFO L295 CegarLoopForPetriNet]: 228 programPoint places, 119 predicate places. [2022-12-11 22:00:05,192 INFO L82 GeneralOperation]: Start removeDead. Operand has 347 places, 548 transitions, 7135 flow [2022-12-11 22:00:05,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-11 22:00:05,199 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-11 22:00:05,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 146.16666666666666) internal successors, (4385), 30 states have internal predecessors, (4385), 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) [2022-12-11 22:00:05,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-11 22:00:05,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-11 22:00:05,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-11 22:00:05,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-11 22:00:05,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-11 22:00:05,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:00:05,412 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1] [2022-12-11 22:00:05,415 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 22:00:05,415 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 22:00:05,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 10:00:05 BasicIcfg [2022-12-11 22:00:05,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 22:00:05,424 INFO L158 Benchmark]: Toolchain (without parser) took 25576.45ms. Allocated memory was 181.4MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 157.8MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 474.6MB. Max. memory is 8.0GB. [2022-12-11 22:00:05,424 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 157.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 22:00:05,425 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.21ms. Allocated memory is still 181.4MB. Free memory was 157.2MB in the beginning and 143.1MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-11 22:00:05,425 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.96ms. Allocated memory is still 181.4MB. Free memory was 143.1MB in the beginning and 140.5MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-11 22:00:05,425 INFO L158 Benchmark]: Boogie Preprocessor took 36.15ms. Allocated memory is still 181.4MB. Free memory was 140.5MB in the beginning and 138.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 22:00:05,425 INFO L158 Benchmark]: RCFGBuilder took 776.28ms. Allocated memory is still 181.4MB. Free memory was 138.4MB in the beginning and 99.0MB in the end (delta: 39.3MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2022-12-11 22:00:05,426 INFO L158 Benchmark]: TraceAbstraction took 24385.02ms. Allocated memory was 181.4MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 97.5MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 413.8MB. Max. memory is 8.0GB. [2022-12-11 22:00:05,427 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 157.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 306.21ms. Allocated memory is still 181.4MB. Free memory was 157.2MB in the beginning and 143.1MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 66.96ms. Allocated memory is still 181.4MB. Free memory was 143.1MB in the beginning and 140.5MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.15ms. Allocated memory is still 181.4MB. Free memory was 140.5MB in the beginning and 138.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 776.28ms. Allocated memory is still 181.4MB. Free memory was 138.4MB in the beginning and 99.0MB in the end (delta: 39.3MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * TraceAbstraction took 24385.02ms. Allocated memory was 181.4MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 97.5MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 413.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 156]: 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, 277 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.2s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 24.2s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2257 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2257 mSDsluCounter, 2121 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1846 mSDsCounter, 136 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4405 IncrementalHoareTripleChecker+Invalid, 4541 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 136 mSolverCounterUnsat, 275 mSDtfsCounter, 4405 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2336 GetRequests, 2096 SyntacticMatches, 2 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3822 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7780occurred in iteration=10, InterpolantAutomatonStates: 170, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 18181 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 3670 NumberOfCodeBlocks, 3593 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 4301 ConstructedInterpolants, 0 QuantifiedInterpolants, 14524 SizeOfPredicates, 66 NumberOfNonLiveVariables, 3495 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 21 InterpolantComputations, 8 PerfectInterpolantSequences, 174/215 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! [2022-12-11 22:00:05,458 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...