/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 22:10:36,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 22:10:36,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 22:10:37,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 22:10:37,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 22:10:37,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 22:10:37,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 22:10:37,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 22:10:37,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 22:10:37,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 22:10:37,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 22:10:37,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 22:10:37,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 22:10:37,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 22:10:37,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 22:10:37,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 22:10:37,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 22:10:37,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 22:10:37,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 22:10:37,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 22:10:37,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 22:10:37,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 22:10:37,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 22:10:37,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 22:10:37,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 22:10:37,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 22:10:37,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 22:10:37,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 22:10:37,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 22:10:37,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 22:10:37,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 22:10:37,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 22:10:37,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 22:10:37,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 22:10:37,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 22:10:37,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 22:10:37,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 22:10:37,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 22:10:37,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 22:10:37,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 22:10:37,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 22:10:37,089 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-SemanticLbe.epf [2022-12-05 22:10:37,113 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 22:10:37,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 22:10:37,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 22:10:37,115 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 22:10:37,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 22:10:37,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 22:10:37,116 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 22:10:37,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 22:10:37,117 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 22:10:37,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 22:10:37,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 22:10:37,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 22:10:37,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 22:10:37,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 22:10:37,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 22:10:37,118 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 22:10:37,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 22:10:37,118 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 22:10:37,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 22:10:37,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 22:10:37,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 22:10:37,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 22:10:37,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 22:10:37,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 22:10:37,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 22:10:37,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 22:10:37,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 22:10:37,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 22:10:37,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 22:10:37,120 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 22:10:37,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 22:10:37,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 22:10:37,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 22:10:37,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 22:10:37,440 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 22:10:37,440 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 22:10:37,441 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2022-12-05 22:10:38,624 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 22:10:38,841 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 22:10:38,841 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2022-12-05 22:10:38,848 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26d92c44a/63a41865e51d4d84911010d6f84405b1/FLAG2b7c85dd2 [2022-12-05 22:10:38,858 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26d92c44a/63a41865e51d4d84911010d6f84405b1 [2022-12-05 22:10:38,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 22:10:38,861 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 22:10:38,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 22:10:38,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 22:10:38,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 22:10:38,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 10:10:38" (1/1) ... [2022-12-05 22:10:38,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2792a0fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:10:38, skipping insertion in model container [2022-12-05 22:10:38,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 10:10:38" (1/1) ... [2022-12-05 22:10:38,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 22:10:38,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 22:10:39,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:10:39,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:10:39,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:10:39,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:10:39,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:10:39,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:10:39,014 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:10:39,015 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:10:39,015 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:10:39,016 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:10:39,016 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:10:39,017 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:10:39,017 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:10:39,018 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:10:39,018 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:10:39,019 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:10:39,019 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:10:39,019 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:10:39,019 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:10:39,020 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:10:39,026 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-threaded-sum-3.wvr.c[2957,2970] [2022-12-05 22:10:39,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 22:10:39,041 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 22:10:39,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:10:39,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:10:39,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:10:39,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:10:39,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:10:39,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:10:39,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:10:39,064 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:10:39,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:10:39,066 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:10:39,066 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:10:39,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:10:39,069 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:10:39,070 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:10:39,076 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:10:39,077 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:10:39,077 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:10:39,078 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:10:39,078 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:10:39,078 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:10:39,088 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-threaded-sum-3.wvr.c[2957,2970] [2022-12-05 22:10:39,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 22:10:39,102 INFO L208 MainTranslator]: Completed translation [2022-12-05 22:10:39,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:10:39 WrapperNode [2022-12-05 22:10:39,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 22:10:39,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 22:10:39,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 22:10:39,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 22:10:39,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:10:39" (1/1) ... [2022-12-05 22:10:39,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:10:39" (1/1) ... [2022-12-05 22:10:39,148 INFO L138 Inliner]: procedures = 22, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2022-12-05 22:10:39,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 22:10:39,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 22:10:39,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 22:10:39,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 22:10:39,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:10:39" (1/1) ... [2022-12-05 22:10:39,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:10:39" (1/1) ... [2022-12-05 22:10:39,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:10:39" (1/1) ... [2022-12-05 22:10:39,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:10:39" (1/1) ... [2022-12-05 22:10:39,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:10:39" (1/1) ... [2022-12-05 22:10:39,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:10:39" (1/1) ... [2022-12-05 22:10:39,179 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:10:39" (1/1) ... [2022-12-05 22:10:39,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:10:39" (1/1) ... [2022-12-05 22:10:39,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 22:10:39,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 22:10:39,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 22:10:39,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 22:10:39,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:10:39" (1/1) ... [2022-12-05 22:10:39,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 22:10:39,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:10:39,220 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) [2022-12-05 22:10:39,248 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 [2022-12-05 22:10:39,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 22:10:39,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 22:10:39,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 22:10:39,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 22:10:39,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 22:10:39,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 22:10:39,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 22:10:39,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 22:10:39,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 22:10:39,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 22:10:39,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 22:10:39,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 22:10:39,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 22:10:39,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 22:10:39,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 22:10:39,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 22:10:39,268 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 22:10:39,375 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 22:10:39,376 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 22:10:39,561 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 22:10:39,636 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 22:10:39,637 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-05 22:10:39,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 10:10:39 BoogieIcfgContainer [2022-12-05 22:10:39,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 22:10:39,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 22:10:39,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 22:10:39,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 22:10:39,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 10:10:38" (1/3) ... [2022-12-05 22:10:39,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ceaf444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 10:10:39, skipping insertion in model container [2022-12-05 22:10:39,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:10:39" (2/3) ... [2022-12-05 22:10:39,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ceaf444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 10:10:39, skipping insertion in model container [2022-12-05 22:10:39,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 10:10:39" (3/3) ... [2022-12-05 22:10:39,647 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-threaded-sum-3.wvr.c [2022-12-05 22:10:39,662 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 22:10:39,662 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 22:10:39,662 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 22:10:39,782 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-05 22:10:39,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 108 transitions, 240 flow [2022-12-05 22:10:39,910 INFO L130 PetriNetUnfolder]: 8/105 cut-off events. [2022-12-05 22:10:39,911 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 22:10:39,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 105 events. 8/105 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2022-12-05 22:10:39,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 108 transitions, 240 flow [2022-12-05 22:10:39,920 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 95 transitions, 208 flow [2022-12-05 22:10:39,922 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 22:10:39,945 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 95 transitions, 208 flow [2022-12-05 22:10:39,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 95 transitions, 208 flow [2022-12-05 22:10:39,999 INFO L130 PetriNetUnfolder]: 8/95 cut-off events. [2022-12-05 22:10:39,999 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 22:10:40,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 8/95 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2022-12-05 22:10:40,005 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 95 transitions, 208 flow [2022-12-05 22:10:40,005 INFO L188 LiptonReduction]: Number of co-enabled transitions 1010 [2022-12-05 22:10:43,415 INFO L203 LiptonReduction]: Total number of compositions: 70 [2022-12-05 22:10:43,427 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 22:10:43,433 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;@227a1da7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 22:10:43,433 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-05 22:10:43,439 INFO L130 PetriNetUnfolder]: 3/24 cut-off events. [2022-12-05 22:10:43,439 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 22:10:43,439 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:10:43,440 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:10:43,440 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)] === [2022-12-05 22:10:43,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:10:43,444 INFO L85 PathProgramCache]: Analyzing trace with hash -239323139, now seen corresponding path program 1 times [2022-12-05 22:10:43,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:10:43,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17991045] [2022-12-05 22:10:43,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:10:43,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:10:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:10:44,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:10:44,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:10:44,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17991045] [2022-12-05 22:10:44,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17991045] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:10:44,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:10:44,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 22:10:44,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960402307] [2022-12-05 22:10:44,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:10:44,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 22:10:44,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:10:44,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 22:10:44,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 22:10:44,263 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-05 22:10:44,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 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) [2022-12-05 22:10:44,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:10:44,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-05 22:10:44,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:10:44,495 INFO L130 PetriNetUnfolder]: 601/870 cut-off events. [2022-12-05 22:10:44,495 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2022-12-05 22:10:44,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1821 conditions, 870 events. 601/870 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3041 event pairs, 39 based on Foata normal form. 0/706 useless extension candidates. Maximal degree in co-relation 1496. Up to 659 conditions per place. [2022-12-05 22:10:44,509 INFO L137 encePairwiseOnDemand]: 20/25 looper letters, 46 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2022-12-05 22:10:44,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 51 transitions, 234 flow [2022-12-05 22:10:44,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 22:10:44,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 22:10:44,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2022-12-05 22:10:44,527 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.52 [2022-12-05 22:10:44,529 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 68 flow. Second operand 4 states and 52 transitions. [2022-12-05 22:10:44,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 51 transitions, 234 flow [2022-12-05 22:10:44,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 51 transitions, 214 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-05 22:10:44,536 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 88 flow [2022-12-05 22:10:44,538 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2022-12-05 22:10:44,541 INFO L294 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2022-12-05 22:10:44,541 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 88 flow [2022-12-05 22:10:44,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 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) [2022-12-05 22:10:44,542 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:10:44,542 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:10:44,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 22:10:44,542 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)] === [2022-12-05 22:10:44,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:10:44,543 INFO L85 PathProgramCache]: Analyzing trace with hash -689224345, now seen corresponding path program 1 times [2022-12-05 22:10:44,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:10:44,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244042260] [2022-12-05 22:10:44,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:10:44,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:10:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:10:44,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:10:44,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:10:44,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244042260] [2022-12-05 22:10:44,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244042260] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:10:44,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461666885] [2022-12-05 22:10:44,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:10:44,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:10:44,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:10:44,988 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) [2022-12-05 22:10:45,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 22:10:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:10:45,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-05 22:10:45,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:10:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:10:45,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:10:45,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:10:45,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461666885] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 22:10:45,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 22:10:45,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2022-12-05 22:10:45,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578775404] [2022-12-05 22:10:45,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 22:10:45,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-05 22:10:45,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:10:45,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-05 22:10:45,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-12-05 22:10:45,451 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-05 22:10:45,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 88 flow. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 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) [2022-12-05 22:10:45,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:10:45,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-05 22:10:45,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:10:46,992 INFO L130 PetriNetUnfolder]: 1420/2135 cut-off events. [2022-12-05 22:10:46,992 INFO L131 PetriNetUnfolder]: For 453/453 co-relation queries the response was YES. [2022-12-05 22:10:46,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4970 conditions, 2135 events. 1420/2135 cut-off events. For 453/453 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9126 event pairs, 71 based on Foata normal form. 0/1967 useless extension candidates. Maximal degree in co-relation 1438. Up to 373 conditions per place. [2022-12-05 22:10:47,004 INFO L137 encePairwiseOnDemand]: 14/25 looper letters, 194 selfloop transitions, 95 changer transitions 8/297 dead transitions. [2022-12-05 22:10:47,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 297 transitions, 1378 flow [2022-12-05 22:10:47,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-05 22:10:47,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-05 22:10:47,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 307 transitions. [2022-12-05 22:10:47,012 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3961290322580645 [2022-12-05 22:10:47,012 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 88 flow. Second operand 31 states and 307 transitions. [2022-12-05 22:10:47,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 297 transitions, 1378 flow [2022-12-05 22:10:47,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 297 transitions, 1378 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 22:10:47,022 INFO L231 Difference]: Finished difference. Result has 68 places, 141 transitions, 740 flow [2022-12-05 22:10:47,022 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=740, PETRI_PLACES=68, PETRI_TRANSITIONS=141} [2022-12-05 22:10:47,022 INFO L294 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2022-12-05 22:10:47,023 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 141 transitions, 740 flow [2022-12-05 22:10:47,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 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) [2022-12-05 22:10:47,026 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:10:47,026 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:10:47,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-05 22:10:47,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:10:47,232 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)] === [2022-12-05 22:10:47,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:10:47,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1305400516, now seen corresponding path program 1 times [2022-12-05 22:10:47,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:10:47,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000318973] [2022-12-05 22:10:47,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:10:47,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:10:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:10:47,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:10:47,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:10:47,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000318973] [2022-12-05 22:10:47,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000318973] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:10:47,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930036649] [2022-12-05 22:10:47,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:10:47,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:10:47,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:10:47,663 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) [2022-12-05 22:10:47,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 22:10:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:10:47,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-05 22:10:47,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:10:47,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:10:47,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:10:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:10:47,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930036649] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 22:10:47,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 22:10:47,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 12 [2022-12-05 22:10:47,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745147861] [2022-12-05 22:10:47,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 22:10:47,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-05 22:10:47,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:10:47,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-05 22:10:47,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-12-05 22:10:47,895 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-05 22:10:47,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 141 transitions, 740 flow. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 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) [2022-12-05 22:10:47,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:10:47,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-05 22:10:47,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:10:48,626 INFO L130 PetriNetUnfolder]: 1524/2233 cut-off events. [2022-12-05 22:10:48,626 INFO L131 PetriNetUnfolder]: For 6120/6120 co-relation queries the response was YES. [2022-12-05 22:10:48,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7699 conditions, 2233 events. 1524/2233 cut-off events. For 6120/6120 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 9311 event pairs, 199 based on Foata normal form. 108/2235 useless extension candidates. Maximal degree in co-relation 5820. Up to 786 conditions per place. [2022-12-05 22:10:48,644 INFO L137 encePairwiseOnDemand]: 16/25 looper letters, 194 selfloop transitions, 101 changer transitions 0/295 dead transitions. [2022-12-05 22:10:48,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 295 transitions, 2126 flow [2022-12-05 22:10:48,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-05 22:10:48,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-05 22:10:48,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 130 transitions. [2022-12-05 22:10:48,647 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2022-12-05 22:10:48,647 INFO L175 Difference]: Start difference. First operand has 68 places, 141 transitions, 740 flow. Second operand 15 states and 130 transitions. [2022-12-05 22:10:48,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 295 transitions, 2126 flow [2022-12-05 22:10:48,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 295 transitions, 1929 flow, removed 94 selfloop flow, removed 1 redundant places. [2022-12-05 22:10:48,682 INFO L231 Difference]: Finished difference. Result has 84 places, 187 transitions, 1295 flow [2022-12-05 22:10:48,685 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1295, PETRI_PLACES=84, PETRI_TRANSITIONS=187} [2022-12-05 22:10:48,687 INFO L294 CegarLoopForPetriNet]: 32 programPoint places, 52 predicate places. [2022-12-05 22:10:48,687 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 187 transitions, 1295 flow [2022-12-05 22:10:48,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 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) [2022-12-05 22:10:48,688 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:10:48,688 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:10:48,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-05 22:10:48,896 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,SelfDestructingSolverStorable2 [2022-12-05 22:10:48,897 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)] === [2022-12-05 22:10:48,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:10:48,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1272261164, now seen corresponding path program 2 times [2022-12-05 22:10:48,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:10:48,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947503223] [2022-12-05 22:10:48,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:10:48,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:10:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:10:49,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:10:49,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:10:49,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947503223] [2022-12-05 22:10:49,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947503223] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:10:49,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515725345] [2022-12-05 22:10:49,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 22:10:49,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:10:49,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:10:49,177 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) [2022-12-05 22:10:49,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 22:10:49,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 22:10:49,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 22:10:49,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-05 22:10:49,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:10:49,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:10:49,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:10:49,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:10:49,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515725345] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 22:10:49,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 22:10:49,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 10 [2022-12-05 22:10:49,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045507474] [2022-12-05 22:10:49,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 22:10:49,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-05 22:10:49,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:10:49,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-05 22:10:49,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-05 22:10:49,445 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-05 22:10:49,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 187 transitions, 1295 flow. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 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) [2022-12-05 22:10:49,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:10:49,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-05 22:10:49,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:10:50,152 INFO L130 PetriNetUnfolder]: 2829/4210 cut-off events. [2022-12-05 22:10:50,152 INFO L131 PetriNetUnfolder]: For 22104/22104 co-relation queries the response was YES. [2022-12-05 22:10:50,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17911 conditions, 4210 events. 2829/4210 cut-off events. For 22104/22104 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 20820 event pairs, 105 based on Foata normal form. 88/4122 useless extension candidates. Maximal degree in co-relation 14475. Up to 1582 conditions per place. [2022-12-05 22:10:50,241 INFO L137 encePairwiseOnDemand]: 16/25 looper letters, 338 selfloop transitions, 161 changer transitions 3/502 dead transitions. [2022-12-05 22:10:50,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 502 transitions, 4426 flow [2022-12-05 22:10:50,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-05 22:10:50,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-05 22:10:50,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 129 transitions. [2022-12-05 22:10:50,243 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.39692307692307693 [2022-12-05 22:10:50,243 INFO L175 Difference]: Start difference. First operand has 84 places, 187 transitions, 1295 flow. Second operand 13 states and 129 transitions. [2022-12-05 22:10:50,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 502 transitions, 4426 flow [2022-12-05 22:10:50,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 502 transitions, 4425 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 22:10:50,307 INFO L231 Difference]: Finished difference. Result has 104 places, 308 transitions, 2813 flow [2022-12-05 22:10:50,307 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2813, PETRI_PLACES=104, PETRI_TRANSITIONS=308} [2022-12-05 22:10:50,308 INFO L294 CegarLoopForPetriNet]: 32 programPoint places, 72 predicate places. [2022-12-05 22:10:50,308 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 308 transitions, 2813 flow [2022-12-05 22:10:50,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 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) [2022-12-05 22:10:50,309 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:10:50,309 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:10:50,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-05 22:10:50,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:10:50,515 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)] === [2022-12-05 22:10:50,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:10:50,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1240923135, now seen corresponding path program 1 times [2022-12-05 22:10:50,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:10:50,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085540403] [2022-12-05 22:10:50,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:10:50,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:10:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:10:52,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:10:52,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:10:52,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085540403] [2022-12-05 22:10:52,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085540403] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:10:52,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468469498] [2022-12-05 22:10:52,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:10:52,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:10:52,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:10:52,076 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) [2022-12-05 22:10:52,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 22:10:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:10:52,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-05 22:10:52,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:10:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:10:53,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:10:54,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:10:54,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468469498] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 22:10:54,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 22:10:54,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 26 [2022-12-05 22:10:54,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025464327] [2022-12-05 22:10:54,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 22:10:54,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-05 22:10:54,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:10:54,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-05 22:10:54,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2022-12-05 22:10:54,812 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-05 22:10:54,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 308 transitions, 2813 flow. Second operand has 28 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 27 states have internal predecessors, (69), 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) [2022-12-05 22:10:54,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:10:54,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-05 22:10:54,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:11:35,314 INFO L130 PetriNetUnfolder]: 14590/21789 cut-off events. [2022-12-05 22:11:35,315 INFO L131 PetriNetUnfolder]: For 137069/137069 co-relation queries the response was YES. [2022-12-05 22:11:35,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104715 conditions, 21789 events. 14590/21789 cut-off events. For 137069/137069 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 141193 event pairs, 167 based on Foata normal form. 70/21823 useless extension candidates. Maximal degree in co-relation 77566. Up to 3977 conditions per place. [2022-12-05 22:11:35,496 INFO L137 encePairwiseOnDemand]: 10/25 looper letters, 1117 selfloop transitions, 1855 changer transitions 464/3436 dead transitions. [2022-12-05 22:11:35,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 3436 transitions, 35973 flow [2022-12-05 22:11:35,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-12-05 22:11:35,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2022-12-05 22:11:35,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 1290 transitions. [2022-12-05 22:11:35,505 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.33076923076923076 [2022-12-05 22:11:35,505 INFO L175 Difference]: Start difference. First operand has 104 places, 308 transitions, 2813 flow. Second operand 156 states and 1290 transitions. [2022-12-05 22:11:35,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 3436 transitions, 35973 flow [2022-12-05 22:11:36,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 3436 transitions, 35331 flow, removed 321 selfloop flow, removed 0 redundant places. [2022-12-05 22:11:36,518 INFO L231 Difference]: Finished difference. Result has 336 places, 2318 transitions, 28569 flow [2022-12-05 22:11:36,519 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=2727, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=156, PETRI_FLOW=28569, PETRI_PLACES=336, PETRI_TRANSITIONS=2318} [2022-12-05 22:11:36,520 INFO L294 CegarLoopForPetriNet]: 32 programPoint places, 304 predicate places. [2022-12-05 22:11:36,520 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 2318 transitions, 28569 flow [2022-12-05 22:11:36,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 27 states have internal predecessors, (69), 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) [2022-12-05 22:11:36,521 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:11:36,521 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:11:36,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-05 22:11:36,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:11:36,727 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)] === [2022-12-05 22:11:36,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:11:36,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1423278557, now seen corresponding path program 2 times [2022-12-05 22:11:36,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:11:36,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680854910] [2022-12-05 22:11:36,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:11:36,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:11:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:11:38,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:11:38,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:11:38,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680854910] [2022-12-05 22:11:38,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680854910] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:11:38,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053199486] [2022-12-05 22:11:38,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 22:11:38,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:11:38,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:11:38,768 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) [2022-12-05 22:11:38,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-05 22:11:38,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 22:11:38,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 22:11:38,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-05 22:11:38,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:11:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:11:39,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:11:40,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:11:40,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053199486] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 22:11:40,674 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 22:11:40,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 23 [2022-12-05 22:11:40,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752729572] [2022-12-05 22:11:40,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 22:11:40,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-05 22:11:40,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:11:40,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-05 22:11:40,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2022-12-05 22:11:40,675 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-05 22:11:40,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 2318 transitions, 28569 flow. Second operand has 25 states, 24 states have (on average 2.875) internal successors, (69), 24 states have internal predecessors, (69), 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) [2022-12-05 22:11:40,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:11:40,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-05 22:11:40,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:12:17,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 22:12:17,512 INFO L130 PetriNetUnfolder]: 25389/37824 cut-off events. [2022-12-05 22:12:17,512 INFO L131 PetriNetUnfolder]: For 448747/448747 co-relation queries the response was YES. [2022-12-05 22:12:17,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244783 conditions, 37824 events. 25389/37824 cut-off events. For 448747/448747 co-relation queries the response was YES. Maximal size of possible extension queue 2021. Compared 264168 event pairs, 810 based on Foata normal form. 70/37894 useless extension candidates. Maximal degree in co-relation 243773. Up to 7761 conditions per place. [2022-12-05 22:12:18,041 INFO L137 encePairwiseOnDemand]: 14/25 looper letters, 1869 selfloop transitions, 3176 changer transitions 884/5929 dead transitions. [2022-12-05 22:12:18,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 5929 transitions, 83592 flow [2022-12-05 22:12:18,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-12-05 22:12:18,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2022-12-05 22:12:18,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 805 transitions. [2022-12-05 22:12:18,053 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3744186046511628 [2022-12-05 22:12:18,054 INFO L175 Difference]: Start difference. First operand has 336 places, 2318 transitions, 28569 flow. Second operand 86 states and 805 transitions. [2022-12-05 22:12:18,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 5929 transitions, 83592 flow [2022-12-05 22:12:38,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 5929 transitions, 78591 flow, removed 2489 selfloop flow, removed 27 redundant places. [2022-12-05 22:12:38,621 INFO L231 Difference]: Finished difference. Result has 412 places, 4222 transitions, 62459 flow [2022-12-05 22:12:38,623 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=26485, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1473, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=62459, PETRI_PLACES=412, PETRI_TRANSITIONS=4222} [2022-12-05 22:12:38,624 INFO L294 CegarLoopForPetriNet]: 32 programPoint places, 380 predicate places. [2022-12-05 22:12:38,624 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 4222 transitions, 62459 flow [2022-12-05 22:12:38,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.875) internal successors, (69), 24 states have internal predecessors, (69), 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) [2022-12-05 22:12:38,624 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:12:38,624 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:12:38,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-05 22:12:38,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:12:38,830 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)] === [2022-12-05 22:12:38,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:12:38,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1659656597, now seen corresponding path program 3 times [2022-12-05 22:12:38,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:12:38,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601235735] [2022-12-05 22:12:38,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:12:38,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:12:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:12:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:12:40,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:12:40,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601235735] [2022-12-05 22:12:40,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601235735] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:12:40,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217872199] [2022-12-05 22:12:40,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 22:12:40,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:12:40,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:12:40,271 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) [2022-12-05 22:12:40,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-05 22:12:40,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-05 22:12:40,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 22:12:40,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-05 22:12:40,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:12:41,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:12:41,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:12:42,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:12:42,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217872199] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 22:12:42,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 22:12:42,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 26 [2022-12-05 22:12:42,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033260778] [2022-12-05 22:12:42,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 22:12:42,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-05 22:12:42,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:12:42,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-05 22:12:42,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=596, Unknown=0, NotChecked=0, Total=756 [2022-12-05 22:12:42,271 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-05 22:12:42,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 4222 transitions, 62459 flow. Second operand has 28 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 27 states have internal predecessors, (69), 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) [2022-12-05 22:12:42,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:12:42,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-05 22:12:42,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:13:30,426 INFO L130 PetriNetUnfolder]: 32846/48750 cut-off events. [2022-12-05 22:13:30,426 INFO L131 PetriNetUnfolder]: For 581310/581310 co-relation queries the response was YES. [2022-12-05 22:13:31,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344027 conditions, 48750 events. 32846/48750 cut-off events. For 581310/581310 co-relation queries the response was YES. Maximal size of possible extension queue 2680. Compared 349648 event pairs, 504 based on Foata normal form. 111/48861 useless extension candidates. Maximal degree in co-relation 343242. Up to 10766 conditions per place. [2022-12-05 22:13:31,630 INFO L137 encePairwiseOnDemand]: 11/25 looper letters, 2129 selfloop transitions, 4910 changer transitions 760/7799 dead transitions. [2022-12-05 22:13:31,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 7799 transitions, 127012 flow [2022-12-05 22:13:31,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-12-05 22:13:31,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2022-12-05 22:13:31,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 820 transitions. [2022-12-05 22:13:31,633 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.30943396226415093 [2022-12-05 22:13:31,633 INFO L175 Difference]: Start difference. First operand has 412 places, 4222 transitions, 62459 flow. Second operand 106 states and 820 transitions. [2022-12-05 22:13:31,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 7799 transitions, 127012 flow [2022-12-05 22:14:16,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 7799 transitions, 123594 flow, removed 1652 selfloop flow, removed 23 redundant places. [2022-12-05 22:14:16,673 INFO L231 Difference]: Finished difference. Result has 547 places, 6344 transitions, 112208 flow [2022-12-05 22:14:16,677 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=60622, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2911, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=954, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=112208, PETRI_PLACES=547, PETRI_TRANSITIONS=6344} [2022-12-05 22:14:16,677 INFO L294 CegarLoopForPetriNet]: 32 programPoint places, 515 predicate places. [2022-12-05 22:14:16,677 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 6344 transitions, 112208 flow [2022-12-05 22:14:16,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 27 states have internal predecessors, (69), 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) [2022-12-05 22:14:16,678 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:14:16,678 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:14:16,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-05 22:14:16,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:14:16,883 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)] === [2022-12-05 22:14:16,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:14:16,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2030049318, now seen corresponding path program 4 times [2022-12-05 22:14:16,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:14:16,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268228866] [2022-12-05 22:14:16,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:14:16,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:14:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:14:17,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:14:17,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:14:17,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268228866] [2022-12-05 22:14:17,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268228866] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:14:17,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318139813] [2022-12-05 22:14:17,113 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-05 22:14:17,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:14:17,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:14:17,116 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) [2022-12-05 22:14:17,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-05 22:14:17,192 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-05 22:14:17,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 22:14:17,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-05 22:14:17,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:14:17,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:14:17,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 22:14:17,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318139813] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:14:17,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 22:14:17,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-12-05 22:14:17,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712143302] [2022-12-05 22:14:17,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:14:17,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 22:14:17,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:14:17,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 22:14:17,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-05 22:14:17,316 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-05 22:14:17,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 6344 transitions, 112208 flow. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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) [2022-12-05 22:14:17,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:14:17,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-05 22:14:17,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:15:03,452 INFO L130 PetriNetUnfolder]: 29035/42382 cut-off events. [2022-12-05 22:15:03,452 INFO L131 PetriNetUnfolder]: For 942873/942873 co-relation queries the response was YES. [2022-12-05 22:15:04,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362737 conditions, 42382 events. 29035/42382 cut-off events. For 942873/942873 co-relation queries the response was YES. Maximal size of possible extension queue 2366. Compared 289958 event pairs, 550 based on Foata normal form. 1382/43764 useless extension candidates. Maximal degree in co-relation 362553. Up to 9577 conditions per place. [2022-12-05 22:15:04,946 INFO L137 encePairwiseOnDemand]: 15/25 looper letters, 4747 selfloop transitions, 3441 changer transitions 0/8188 dead transitions. [2022-12-05 22:15:04,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 8188 transitions, 160185 flow [2022-12-05 22:15:04,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-05 22:15:04,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-05 22:15:04,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 134 transitions. [2022-12-05 22:15:04,948 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.335 [2022-12-05 22:15:04,948 INFO L175 Difference]: Start difference. First operand has 547 places, 6344 transitions, 112208 flow. Second operand 16 states and 134 transitions. [2022-12-05 22:15:04,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 8188 transitions, 160185 flow [2022-12-05 22:16:12,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 8188 transitions, 156660 flow, removed 1201 selfloop flow, removed 32 redundant places. [2022-12-05 22:16:12,942 INFO L231 Difference]: Finished difference. Result has 503 places, 6813 transitions, 130625 flow [2022-12-05 22:16:12,947 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=103464, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5994, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2628, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3089, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=130625, PETRI_PLACES=503, PETRI_TRANSITIONS=6813} [2022-12-05 22:16:12,947 INFO L294 CegarLoopForPetriNet]: 32 programPoint places, 471 predicate places. [2022-12-05 22:16:12,947 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 6813 transitions, 130625 flow [2022-12-05 22:16:12,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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) [2022-12-05 22:16:12,948 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:16:12,948 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:16:12,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-05 22:16:13,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:16:13,153 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)] === [2022-12-05 22:16:13,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:16:13,153 INFO L85 PathProgramCache]: Analyzing trace with hash 824753300, now seen corresponding path program 5 times [2022-12-05 22:16:13,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:16:13,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543782922] [2022-12-05 22:16:13,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:16:13,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:16:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:16:13,988 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 22:16:13,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:16:13,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543782922] [2022-12-05 22:16:13,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543782922] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:16:13,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755445798] [2022-12-05 22:16:13,989 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-05 22:16:13,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:16:13,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:16:13,990 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 22:16:13,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-05 22:16:14,164 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-05 22:16:14,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 22:16:14,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-05 22:16:14,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:16:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:16:14,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:16:16,272 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:16:16,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755445798] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 22:16:16,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 22:16:16,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 11] total 28 [2022-12-05 22:16:16,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647084416] [2022-12-05 22:16:16,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 22:16:16,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-05 22:16:16,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:16:16,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-05 22:16:16,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2022-12-05 22:16:16,274 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-05 22:16:16,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 6813 transitions, 130625 flow. Second operand has 30 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 29 states have internal predecessors, (68), 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) [2022-12-05 22:16:16,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:16:16,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-05 22:16:16,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:18:10,955 INFO L130 PetriNetUnfolder]: 51242/74645 cut-off events. [2022-12-05 22:18:10,955 INFO L131 PetriNetUnfolder]: For 1565487/1565487 co-relation queries the response was YES. [2022-12-05 22:18:13,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679368 conditions, 74645 events. 51242/74645 cut-off events. For 1565487/1565487 co-relation queries the response was YES. Maximal size of possible extension queue 3585. Compared 539467 event pairs, 356 based on Foata normal form. 72/74717 useless extension candidates. Maximal degree in co-relation 679200. Up to 14828 conditions per place. [2022-12-05 22:18:14,463 INFO L137 encePairwiseOnDemand]: 10/25 looper letters, 2548 selfloop transitions, 10057 changer transitions 828/13433 dead transitions. [2022-12-05 22:18:14,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 634 places, 13433 transitions, 276164 flow [2022-12-05 22:18:14,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-12-05 22:18:14,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2022-12-05 22:18:14,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 1111 transitions. [2022-12-05 22:18:14,471 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.33666666666666667 [2022-12-05 22:18:14,471 INFO L175 Difference]: Start difference. First operand has 503 places, 6813 transitions, 130625 flow. Second operand 132 states and 1111 transitions. [2022-12-05 22:18:14,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 634 places, 13433 transitions, 276164 flow [2022-12-05 22:21:54,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 627 places, 13433 transitions, 274495 flow, removed 793 selfloop flow, removed 7 redundant places. [2022-12-05 22:21:55,053 INFO L231 Difference]: Finished difference. Result has 691 places, 11587 transitions, 259935 flow [2022-12-05 22:21:55,058 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=130307, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6813, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5653, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=931, PETRI_DIFFERENCE_SUBTRAHEND_STATES=132, PETRI_FLOW=259935, PETRI_PLACES=691, PETRI_TRANSITIONS=11587} [2022-12-05 22:21:55,058 INFO L294 CegarLoopForPetriNet]: 32 programPoint places, 659 predicate places. [2022-12-05 22:21:55,058 INFO L495 AbstractCegarLoop]: Abstraction has has 691 places, 11587 transitions, 259935 flow [2022-12-05 22:21:55,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 29 states have internal predecessors, (68), 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) [2022-12-05 22:21:55,059 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:21:55,059 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:21:55,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-05 22:21:55,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-05 22:21:55,260 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)] === [2022-12-05 22:21:55,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:21:55,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1671902169, now seen corresponding path program 1 times [2022-12-05 22:21:55,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:21:55,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915256434] [2022-12-05 22:21:55,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:21:55,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:21:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:21:55,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:21:55,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:21:55,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915256434] [2022-12-05 22:21:55,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915256434] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:21:55,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436823025] [2022-12-05 22:21:55,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:21:55,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:21:55,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:21:55,556 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 22:21:55,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-05 22:21:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:21:55,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-05 22:21:55,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:21:55,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:21:55,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:21:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:21:55,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436823025] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 22:21:55,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 22:21:55,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 7] total 14 [2022-12-05 22:21:55,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123329839] [2022-12-05 22:21:55,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:21:55,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 22:21:55,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:21:55,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 22:21:55,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-12-05 22:21:55,840 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 25 [2022-12-05 22:21:55,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 11587 transitions, 259935 flow. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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) [2022-12-05 22:21:55,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:21:55,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 25 [2022-12-05 22:21:55,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-05 22:22:27,570 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-05 22:22:27,571 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-05 22:22:27,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 22:22:27,666 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-05 22:22:27,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-05 22:22:27,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-05 22:22:27,871 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (6states, 1/25 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 89776 conditions, 9838 events (6496/9837 cut-off events. For 253032/253371 co-relation queries the response was YES. Maximal size of possible extension queue 2774. Compared 72487 event pairs, 226 based on Foata normal form. 225/12805 useless extension candidates. Maximal degree in co-relation 89548. Up to 2786 conditions per place.). [2022-12-05 22:22:27,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-05 22:22:27,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-05 22:22:27,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-05 22:22:27,873 INFO L458 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1] [2022-12-05 22:22:27,876 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 22:22:27,876 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 22:22:27,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 10:22:27 BasicIcfg [2022-12-05 22:22:27,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 22:22:27,879 INFO L158 Benchmark]: Toolchain (without parser) took 709017.31ms. Allocated memory was 196.1MB in the beginning and 4.7GB in the end (delta: 4.5GB). Free memory was 156.0MB in the beginning and 2.6GB in the end (delta: -2.4GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. [2022-12-05 22:22:27,879 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 196.1MB. Free memory is still 172.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 22:22:27,879 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.17ms. Allocated memory is still 196.1MB. Free memory was 156.0MB in the beginning and 142.4MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-05 22:22:27,879 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.24ms. Allocated memory is still 196.1MB. Free memory was 142.4MB in the beginning and 140.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 22:22:27,880 INFO L158 Benchmark]: Boogie Preprocessor took 32.28ms. Allocated memory is still 196.1MB. Free memory was 140.3MB in the beginning and 139.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 22:22:27,880 INFO L158 Benchmark]: RCFGBuilder took 456.47ms. Allocated memory is still 196.1MB. Free memory was 139.2MB in the beginning and 120.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-05 22:22:27,880 INFO L158 Benchmark]: TraceAbstraction took 708237.47ms. Allocated memory was 196.1MB in the beginning and 4.7GB in the end (delta: 4.5GB). Free memory was 119.9MB in the beginning and 2.6GB in the end (delta: -2.4GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2022-12-05 22:22:27,881 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 196.1MB. Free memory is still 172.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 240.17ms. Allocated memory is still 196.1MB. Free memory was 156.0MB in the beginning and 142.4MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.24ms. Allocated memory is still 196.1MB. Free memory was 142.4MB in the beginning and 140.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.28ms. Allocated memory is still 196.1MB. Free memory was 140.3MB in the beginning and 139.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 456.47ms. Allocated memory is still 196.1MB. Free memory was 139.2MB in the beginning and 120.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 708237.47ms. Allocated memory was 196.1MB in the beginning and 4.7GB in the end (delta: 4.5GB). Free memory was 119.9MB in the beginning and 2.6GB in the end (delta: -2.4GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 97 PlacesBefore, 32 PlacesAfterwards, 95 TransitionsBefore, 25 TransitionsAfterwards, 1010 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 43 TrivialYvCompositions, 22 ConcurrentYvCompositions, 5 ChoiceCompositions, 70 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 553, independent: 540, independent conditional: 540, independent unconditional: 0, dependent: 13, dependent conditional: 13, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 553, independent: 540, independent conditional: 0, independent unconditional: 540, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 553, independent: 540, independent conditional: 0, independent unconditional: 540, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 553, independent: 540, independent conditional: 0, independent unconditional: 540, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 516, independent: 506, independent conditional: 0, independent unconditional: 506, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 516, independent: 506, independent conditional: 0, independent unconditional: 506, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 51, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 553, independent: 34, independent conditional: 0, independent unconditional: 34, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 516, unknown conditional: 0, unknown unconditional: 516] , Statistics on independence cache: Total cache size (in pairs): 763, Positive cache size: 753, Positive conditional cache size: 0, Positive unconditional cache size: 753, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (6states, 1/25 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 89776 conditions, 9838 events (6496/9837 cut-off events. For 253032/253371 co-relation queries the response was YES. Maximal size of possible extension queue 2774. Compared 72487 event pairs, 226 based on Foata normal form. 225/12805 useless extension candidates. Maximal degree in co-relation 89548. Up to 2786 conditions per place.). - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (6states, 1/25 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 89776 conditions, 9838 events (6496/9837 cut-off events. For 253032/253371 co-relation queries the response was YES. Maximal size of possible extension queue 2774. Compared 72487 event pairs, 226 based on Foata normal form. 225/12805 useless extension candidates. Maximal degree in co-relation 89548. Up to 2786 conditions per place.). - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (6states, 1/25 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 89776 conditions, 9838 events (6496/9837 cut-off events. For 253032/253371 co-relation queries the response was YES. Maximal size of possible extension queue 2774. Compared 72487 event pairs, 226 based on Foata normal form. 225/12805 useless extension candidates. Maximal degree in co-relation 89548. Up to 2786 conditions per place.). - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (6states, 1/25 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 89776 conditions, 9838 events (6496/9837 cut-off events. For 253032/253371 co-relation queries the response was YES. Maximal size of possible extension queue 2774. Compared 72487 event pairs, 226 based on Foata normal form. 225/12805 useless extension candidates. Maximal degree in co-relation 89548. Up to 2786 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 126 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 708.1s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 683.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4586 SdHoareTripleChecker+Valid, 31.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4586 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 29.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 903 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11612 IncrementalHoareTripleChecker+Invalid, 12515 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 903 mSolverCounterUnsat, 8 mSDtfsCounter, 11612 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 924 GetRequests, 295 SyntacticMatches, 8 SemanticMatches, 621 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26746 ImplicationChecksByTransitivity, 94.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=259935occurred in iteration=9, InterpolantAutomatonStates: 559, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 16.8s InterpolantComputationTime, 433 NumberOfCodeBlocks, 433 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 588 ConstructedInterpolants, 0 QuantifiedInterpolants, 19317 SizeOfPredicates, 99 NumberOfNonLiveVariables, 1596 ConjunctsInSsa, 214 ConjunctsInUnsatCore, 27 InterpolantComputations, 3 PerfectInterpolantSequences, 19/61 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown