/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-bad-commit-2.wvr-bad.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 21:25:05,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 21:25:05,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 21:25:05,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 21:25:05,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 21:25:05,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 21:25:05,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 21:25:05,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 21:25:05,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 21:25:05,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 21:25:05,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 21:25:05,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 21:25:05,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 21:25:05,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 21:25:05,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 21:25:05,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 21:25:05,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 21:25:05,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 21:25:05,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 21:25:05,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 21:25:05,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 21:25:05,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 21:25:05,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 21:25:05,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 21:25:05,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 21:25:05,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 21:25:05,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 21:25:05,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 21:25:05,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 21:25:05,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 21:25:05,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 21:25:05,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 21:25:05,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 21:25:05,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 21:25:05,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 21:25:05,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 21:25:05,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 21:25:05,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 21:25:05,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 21:25:05,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 21:25:05,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 21:25:05,148 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 21:25:05,169 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 21:25:05,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 21:25:05,170 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 21:25:05,170 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 21:25:05,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 21:25:05,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 21:25:05,171 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 21:25:05,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 21:25:05,172 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 21:25:05,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 21:25:05,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 21:25:05,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 21:25:05,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 21:25:05,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 21:25:05,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 21:25:05,172 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 21:25:05,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 21:25:05,173 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 21:25:05,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 21:25:05,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 21:25:05,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 21:25:05,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 21:25:05,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 21:25:05,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:25:05,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 21:25:05,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 21:25:05,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 21:25:05,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 21:25:05,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 21:25:05,174 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 21:25:05,174 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 21:25:05,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 21:25:05,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 21:25:05,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 21:25:05,519 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 21:25:05,520 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 21:25:05,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2022-12-05 21:25:06,564 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 21:25:06,761 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 21:25:06,762 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2022-12-05 21:25:06,776 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f4e51d5c/4f3f7a66587b4179821e81c93ffc277f/FLAG2cdffd5c3 [2022-12-05 21:25:06,786 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f4e51d5c/4f3f7a66587b4179821e81c93ffc277f [2022-12-05 21:25:06,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 21:25:06,789 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 21:25:06,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 21:25:06,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 21:25:06,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 21:25:06,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:25:06" (1/1) ... [2022-12-05 21:25:06,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75ed03ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:25:06, skipping insertion in model container [2022-12-05 21:25:06,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:25:06" (1/1) ... [2022-12-05 21:25:06,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 21:25:06,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 21:25:06,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:06,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:06,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:06,965 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:06,966 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:06,971 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:06,972 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:06,973 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:06,973 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:06,974 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:06,974 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:06,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:06,979 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:06,979 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:06,980 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:06,980 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:06,981 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:06,982 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:06,982 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:06,983 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:06,983 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:06,984 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:06,984 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:06,985 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:07,006 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-12-05 21:25:07,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:25:07,021 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 21:25:07,038 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:07,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:07,041 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:07,042 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:07,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:07,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:07,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:07,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:07,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:07,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:07,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:07,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:07,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:07,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:07,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:07,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:07,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:07,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:07,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:07,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:07,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:07,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:07,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:25:07,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:25:07,070 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-12-05 21:25:07,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:25:07,083 INFO L208 MainTranslator]: Completed translation [2022-12-05 21:25:07,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:25:07 WrapperNode [2022-12-05 21:25:07,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 21:25:07,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 21:25:07,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 21:25:07,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 21:25:07,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:25:07" (1/1) ... [2022-12-05 21:25:07,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:25:07" (1/1) ... [2022-12-05 21:25:07,122 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 460 [2022-12-05 21:25:07,123 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 21:25:07,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 21:25:07,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 21:25:07,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 21:25:07,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:25:07" (1/1) ... [2022-12-05 21:25:07,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:25:07" (1/1) ... [2022-12-05 21:25:07,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:25:07" (1/1) ... [2022-12-05 21:25:07,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:25:07" (1/1) ... [2022-12-05 21:25:07,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:25:07" (1/1) ... [2022-12-05 21:25:07,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:25:07" (1/1) ... [2022-12-05 21:25:07,167 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:25:07" (1/1) ... [2022-12-05 21:25:07,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:25:07" (1/1) ... [2022-12-05 21:25:07,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 21:25:07,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 21:25:07,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 21:25:07,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 21:25:07,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:25:07" (1/1) ... [2022-12-05 21:25:07,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:25:07,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:25:07,202 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 21:25:07,204 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 21:25:07,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 21:25:07,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 21:25:07,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 21:25:07,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 21:25:07,228 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 21:25:07,228 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 21:25:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 21:25:07,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 21:25:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 21:25:07,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 21:25:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-05 21:25:07,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-05 21:25:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 21:25:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 21:25:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 21:25:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 21:25:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 21:25:07,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 21:25:07,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 21:25:07,231 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 21:25:07,318 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 21:25:07,320 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 21:25:07,849 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 21:25:07,959 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 21:25:07,959 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2022-12-05 21:25:07,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:25:07 BoogieIcfgContainer [2022-12-05 21:25:07,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 21:25:07,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 21:25:07,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 21:25:07,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 21:25:07,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:25:06" (1/3) ... [2022-12-05 21:25:07,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628a5a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:25:07, skipping insertion in model container [2022-12-05 21:25:07,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:25:07" (2/3) ... [2022-12-05 21:25:07,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628a5a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:25:07, skipping insertion in model container [2022-12-05 21:25:07,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:25:07" (3/3) ... [2022-12-05 21:25:07,970 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2022-12-05 21:25:07,996 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 21:25:07,997 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 21:25:07,997 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 21:25:08,059 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-05 21:25:08,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 331 transitions, 694 flow [2022-12-05 21:25:08,198 INFO L130 PetriNetUnfolder]: 37/327 cut-off events. [2022-12-05 21:25:08,198 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 21:25:08,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 327 events. 37/327 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 240 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 285. Up to 8 conditions per place. [2022-12-05 21:25:08,205 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 331 transitions, 694 flow [2022-12-05 21:25:08,213 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 291 places, 315 transitions, 654 flow [2022-12-05 21:25:08,214 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 21:25:08,226 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 291 places, 315 transitions, 654 flow [2022-12-05 21:25:08,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 315 transitions, 654 flow [2022-12-05 21:25:08,264 INFO L130 PetriNetUnfolder]: 37/315 cut-off events. [2022-12-05 21:25:08,265 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 21:25:08,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 315 events. 37/315 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 239 event pairs, 0 based on Foata normal form. 0/278 useless extension candidates. Maximal degree in co-relation 285. Up to 8 conditions per place. [2022-12-05 21:25:08,269 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 291 places, 315 transitions, 654 flow [2022-12-05 21:25:08,269 INFO L188 LiptonReduction]: Number of co-enabled transitions 5184 [2022-12-05 21:25:19,325 INFO L203 LiptonReduction]: Total number of compositions: 274 [2022-12-05 21:25:19,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 21:25:19,348 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;@fa39ed6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 21:25:19,348 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-05 21:25:19,354 INFO L130 PetriNetUnfolder]: 8/32 cut-off events. [2022-12-05 21:25:19,354 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 21:25:19,354 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:25:19,354 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 21:25:19,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:25:19,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:25:19,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1058262679, now seen corresponding path program 1 times [2022-12-05 21:25:19,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:25:19,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685812107] [2022-12-05 21:25:19,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:25:19,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:25:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:25:19,911 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 21:25:19,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:25:19,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685812107] [2022-12-05 21:25:19,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685812107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:25:19,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:25:19,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-05 21:25:19,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261484764] [2022-12-05 21:25:19,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:25:19,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 21:25:19,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:25:19,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 21:25:19,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 21:25:19,941 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 21:25:19,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 90 flow. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 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 21:25:19,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:25:19,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 21:25:19,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:25:20,122 INFO L130 PetriNetUnfolder]: 501/685 cut-off events. [2022-12-05 21:25:20,122 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-12-05 21:25:20,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1464 conditions, 685 events. 501/685 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1774 event pairs, 117 based on Foata normal form. 1/418 useless extension candidates. Maximal degree in co-relation 1016. Up to 471 conditions per place. [2022-12-05 21:25:20,129 INFO L137 encePairwiseOnDemand]: 27/33 looper letters, 49 selfloop transitions, 5 changer transitions 1/55 dead transitions. [2022-12-05 21:25:20,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 55 transitions, 265 flow [2022-12-05 21:25:20,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 21:25:20,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 21:25:20,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2022-12-05 21:25:20,137 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5656565656565656 [2022-12-05 21:25:20,138 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 90 flow. Second operand 3 states and 56 transitions. [2022-12-05 21:25:20,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 55 transitions, 265 flow [2022-12-05 21:25:20,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 55 transitions, 235 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-05 21:25:20,143 INFO L231 Difference]: Finished difference. Result has 33 places, 37 transitions, 107 flow [2022-12-05 21:25:20,144 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=33, PETRI_TRANSITIONS=37} [2022-12-05 21:25:20,146 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2022-12-05 21:25:20,146 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 37 transitions, 107 flow [2022-12-05 21:25:20,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 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 21:25:20,147 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:25:20,147 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, 1] [2022-12-05 21:25:20,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 21:25:20,147 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:25:20,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:25:20,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1410111894, now seen corresponding path program 1 times [2022-12-05 21:25:20,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:25:20,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868181356] [2022-12-05 21:25:20,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:25:20,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:25:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:25:20,821 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 21:25:20,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:25:20,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868181356] [2022-12-05 21:25:20,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868181356] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:25:20,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937819513] [2022-12-05 21:25:20,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:25:20,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:25:20,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:25:20,835 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 21:25:20,873 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 21:25:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:25:20,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-05 21:25:20,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:25:21,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:25:21,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 21:25:21,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937819513] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:25:21,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 21:25:21,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2022-12-05 21:25:21,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793032137] [2022-12-05 21:25:21,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:25:21,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 21:25:21,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:25:21,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 21:25:21,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:25:21,092 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 21:25:21,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 37 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 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 21:25:21,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:25:21,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 21:25:21,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:25:21,250 INFO L130 PetriNetUnfolder]: 467/647 cut-off events. [2022-12-05 21:25:21,251 INFO L131 PetriNetUnfolder]: For 137/137 co-relation queries the response was YES. [2022-12-05 21:25:21,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1661 conditions, 647 events. 467/647 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1704 event pairs, 117 based on Foata normal form. 30/673 useless extension candidates. Maximal degree in co-relation 471. Up to 433 conditions per place. [2022-12-05 21:25:21,256 INFO L137 encePairwiseOnDemand]: 28/33 looper letters, 47 selfloop transitions, 4 changer transitions 1/52 dead transitions. [2022-12-05 21:25:21,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 52 transitions, 244 flow [2022-12-05 21:25:21,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 21:25:21,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 21:25:21,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2022-12-05 21:25:21,259 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5353535353535354 [2022-12-05 21:25:21,259 INFO L175 Difference]: Start difference. First operand has 33 places, 37 transitions, 107 flow. Second operand 3 states and 53 transitions. [2022-12-05 21:25:21,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 52 transitions, 244 flow [2022-12-05 21:25:21,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 52 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 21:25:21,261 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 106 flow [2022-12-05 21:25:21,261 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2022-12-05 21:25:21,262 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, -4 predicate places. [2022-12-05 21:25:21,263 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 106 flow [2022-12-05 21:25:21,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 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 21:25:21,265 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:25:21,265 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, 1] [2022-12-05 21:25:21,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-05 21:25:21,470 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 21:25:21,473 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:25:21,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:25:21,474 INFO L85 PathProgramCache]: Analyzing trace with hash 573276739, now seen corresponding path program 1 times [2022-12-05 21:25:21,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:25:21,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283464168] [2022-12-05 21:25:21,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:25:21,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:25:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:25:21,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:25:21,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:25:21,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283464168] [2022-12-05 21:25:21,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283464168] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:25:21,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:25:21,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 21:25:21,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076617670] [2022-12-05 21:25:21,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:25:21,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:25:21,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:25:21,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:25:21,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 21:25:21,617 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 21:25:21,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 36 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 21:25:21,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:25:21,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 21:25:21,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:25:21,918 INFO L130 PetriNetUnfolder]: 1278/1817 cut-off events. [2022-12-05 21:25:21,919 INFO L131 PetriNetUnfolder]: For 1179/1179 co-relation queries the response was YES. [2022-12-05 21:25:21,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4546 conditions, 1817 events. 1278/1817 cut-off events. For 1179/1179 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6192 event pairs, 801 based on Foata normal form. 120/1926 useless extension candidates. Maximal degree in co-relation 1325. Up to 648 conditions per place. [2022-12-05 21:25:21,925 INFO L137 encePairwiseOnDemand]: 24/33 looper letters, 92 selfloop transitions, 8 changer transitions 0/100 dead transitions. [2022-12-05 21:25:21,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 100 transitions, 482 flow [2022-12-05 21:25:21,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:25:21,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:25:21,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2022-12-05 21:25:21,927 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2022-12-05 21:25:21,927 INFO L175 Difference]: Start difference. First operand has 34 places, 36 transitions, 106 flow. Second operand 5 states and 95 transitions. [2022-12-05 21:25:21,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 100 transitions, 482 flow [2022-12-05 21:25:21,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 100 transitions, 466 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 21:25:21,929 INFO L231 Difference]: Finished difference. Result has 39 places, 43 transitions, 164 flow [2022-12-05 21:25:21,929 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=39, PETRI_TRANSITIONS=43} [2022-12-05 21:25:21,929 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2022-12-05 21:25:21,930 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 43 transitions, 164 flow [2022-12-05 21:25:21,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 21:25:21,930 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:25:21,930 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, 1] [2022-12-05 21:25:21,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 21:25:21,930 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:25:21,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:25:21,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1195555193, now seen corresponding path program 1 times [2022-12-05 21:25:21,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:25:21,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702829537] [2022-12-05 21:25:21,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:25:21,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:25:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:25:22,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:25:22,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:25:22,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702829537] [2022-12-05 21:25:22,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702829537] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:25:22,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:25:22,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 21:25:22,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134635718] [2022-12-05 21:25:22,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:25:22,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:25:22,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:25:22,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:25:22,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 21:25:22,138 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 21:25:22,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 43 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 21:25:22,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:25:22,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 21:25:22,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:25:22,580 INFO L130 PetriNetUnfolder]: 2274/3257 cut-off events. [2022-12-05 21:25:22,581 INFO L131 PetriNetUnfolder]: For 1290/1290 co-relation queries the response was YES. [2022-12-05 21:25:22,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7875 conditions, 3257 events. 2274/3257 cut-off events. For 1290/1290 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13305 event pairs, 777 based on Foata normal form. 204/3460 useless extension candidates. Maximal degree in co-relation 4835. Up to 1469 conditions per place. [2022-12-05 21:25:22,594 INFO L137 encePairwiseOnDemand]: 30/33 looper letters, 76 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2022-12-05 21:25:22,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 79 transitions, 428 flow [2022-12-05 21:25:22,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 21:25:22,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 21:25:22,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2022-12-05 21:25:22,599 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2022-12-05 21:25:22,599 INFO L175 Difference]: Start difference. First operand has 39 places, 43 transitions, 164 flow. Second operand 4 states and 71 transitions. [2022-12-05 21:25:22,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 79 transitions, 428 flow [2022-12-05 21:25:22,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 79 transitions, 424 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-05 21:25:22,605 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 180 flow [2022-12-05 21:25:22,605 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2022-12-05 21:25:22,606 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2022-12-05 21:25:22,606 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 180 flow [2022-12-05 21:25:22,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 21:25:22,606 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:25:22,606 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, 1] [2022-12-05 21:25:22,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 21:25:22,607 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:25:22,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:25:22,607 INFO L85 PathProgramCache]: Analyzing trace with hash 2118369975, now seen corresponding path program 1 times [2022-12-05 21:25:22,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:25:22,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433126243] [2022-12-05 21:25:22,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:25:22,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:25:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:25:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:25:22,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:25:22,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433126243] [2022-12-05 21:25:22,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433126243] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:25:22,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:25:22,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 21:25:22,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717533642] [2022-12-05 21:25:22,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:25:22,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:25:22,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:25:22,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:25:22,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 21:25:22,816 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 21:25:22,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 21:25:22,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:25:22,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 21:25:22,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:25:23,049 INFO L130 PetriNetUnfolder]: 1238/1829 cut-off events. [2022-12-05 21:25:23,049 INFO L131 PetriNetUnfolder]: For 1500/1500 co-relation queries the response was YES. [2022-12-05 21:25:23,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4860 conditions, 1829 events. 1238/1829 cut-off events. For 1500/1500 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6722 event pairs, 495 based on Foata normal form. 136/1964 useless extension candidates. Maximal degree in co-relation 3941. Up to 845 conditions per place. [2022-12-05 21:25:23,057 INFO L137 encePairwiseOnDemand]: 30/33 looper letters, 66 selfloop transitions, 3 changer transitions 6/75 dead transitions. [2022-12-05 21:25:23,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 75 transitions, 431 flow [2022-12-05 21:25:23,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 21:25:23,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 21:25:23,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2022-12-05 21:25:23,058 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-05 21:25:23,058 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 180 flow. Second operand 4 states and 66 transitions. [2022-12-05 21:25:23,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 75 transitions, 431 flow [2022-12-05 21:25:23,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 75 transitions, 416 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-05 21:25:23,062 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 152 flow [2022-12-05 21:25:23,062 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2022-12-05 21:25:23,064 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 9 predicate places. [2022-12-05 21:25:23,064 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 152 flow [2022-12-05 21:25:23,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 21:25:23,064 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:25:23,064 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, 1, 1] [2022-12-05 21:25:23,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 21:25:23,064 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:25:23,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:25:23,065 INFO L85 PathProgramCache]: Analyzing trace with hash -2068679387, now seen corresponding path program 1 times [2022-12-05 21:25:23,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:25:23,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515734919] [2022-12-05 21:25:23,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:25:23,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:25:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:25:23,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:25:23,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:25:23,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515734919] [2022-12-05 21:25:23,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515734919] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:25:23,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887957760] [2022-12-05 21:25:23,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:25:23,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:25:23,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:25:23,329 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 21:25:23,363 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 21:25:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:25:23,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-05 21:25:23,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:25:23,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:25:23,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:25:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:25:23,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887957760] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:25:23,640 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:25:23,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2022-12-05 21:25:23,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316716835] [2022-12-05 21:25:23,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:25:23,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:25:23,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:25:23,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:25:23,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:25:23,642 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 21:25:23,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 152 flow. Second operand has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 21:25:23,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:25:23,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 21:25:23,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:25:23,917 INFO L130 PetriNetUnfolder]: 1127/1593 cut-off events. [2022-12-05 21:25:23,918 INFO L131 PetriNetUnfolder]: For 1336/1336 co-relation queries the response was YES. [2022-12-05 21:25:23,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4362 conditions, 1593 events. 1127/1593 cut-off events. For 1336/1336 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5450 event pairs, 277 based on Foata normal form. 1/1593 useless extension candidates. Maximal degree in co-relation 4337. Up to 1205 conditions per place. [2022-12-05 21:25:23,924 INFO L137 encePairwiseOnDemand]: 29/33 looper letters, 57 selfloop transitions, 4 changer transitions 3/64 dead transitions. [2022-12-05 21:25:23,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 352 flow [2022-12-05 21:25:23,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 21:25:23,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 21:25:23,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2022-12-05 21:25:23,925 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2022-12-05 21:25:23,925 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 152 flow. Second operand 4 states and 61 transitions. [2022-12-05 21:25:23,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 352 flow [2022-12-05 21:25:23,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 64 transitions, 333 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-12-05 21:25:23,927 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 166 flow [2022-12-05 21:25:23,927 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2022-12-05 21:25:23,927 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2022-12-05 21:25:23,927 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 166 flow [2022-12-05 21:25:23,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 21:25:23,927 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:25:23,928 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:25:23,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-05 21:25:24,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-05 21:25:24,133 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:25:24,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:25:24,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1040180259, now seen corresponding path program 2 times [2022-12-05 21:25:24,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:25:24,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305095741] [2022-12-05 21:25:24,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:25:24,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:25:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:25:24,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:25:24,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:25:24,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305095741] [2022-12-05 21:25:24,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305095741] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:25:24,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733278746] [2022-12-05 21:25:24,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 21:25:24,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:25:24,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:25:24,398 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 21:25:24,400 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 21:25:24,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 21:25:24,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:25:24,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-05 21:25:24,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:25:24,719 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:25:24,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:25:24,870 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:25:24,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 292 treesize of output 302 [2022-12-05 21:25:25,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:25:25,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733278746] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:25:25,243 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:25:25,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2022-12-05 21:25:25,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423878111] [2022-12-05 21:25:25,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:25:25,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-05 21:25:25,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:25:25,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-05 21:25:25,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-12-05 21:25:25,244 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 21:25:25,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 166 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 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 21:25:25,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:25:25,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 21:25:25,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:25:25,717 INFO L130 PetriNetUnfolder]: 1964/2862 cut-off events. [2022-12-05 21:25:25,717 INFO L131 PetriNetUnfolder]: For 2592/2592 co-relation queries the response was YES. [2022-12-05 21:25:25,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7741 conditions, 2862 events. 1964/2862 cut-off events. For 2592/2592 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11748 event pairs, 413 based on Foata normal form. 180/3033 useless extension candidates. Maximal degree in co-relation 7717. Up to 1032 conditions per place. [2022-12-05 21:25:25,728 INFO L137 encePairwiseOnDemand]: 21/33 looper letters, 93 selfloop transitions, 15 changer transitions 27/135 dead transitions. [2022-12-05 21:25:25,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 135 transitions, 704 flow [2022-12-05 21:25:25,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 21:25:25,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 21:25:25,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2022-12-05 21:25:25,729 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.44107744107744107 [2022-12-05 21:25:25,729 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 166 flow. Second operand 9 states and 131 transitions. [2022-12-05 21:25:25,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 135 transitions, 704 flow [2022-12-05 21:25:25,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 135 transitions, 690 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-05 21:25:25,735 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 265 flow [2022-12-05 21:25:25,735 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=265, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2022-12-05 21:25:25,735 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2022-12-05 21:25:25,735 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 265 flow [2022-12-05 21:25:25,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 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 21:25:25,736 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:25:25,737 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, 1, 1, 1] [2022-12-05 21:25:25,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 21:25:25,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:25:25,942 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:25:25,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:25:25,942 INFO L85 PathProgramCache]: Analyzing trace with hash 131129780, now seen corresponding path program 1 times [2022-12-05 21:25:25,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:25:25,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724040947] [2022-12-05 21:25:25,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:25:25,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:25:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:25:26,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:25:26,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:25:26,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724040947] [2022-12-05 21:25:26,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724040947] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:25:26,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174343584] [2022-12-05 21:25:26,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:25:26,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:25:26,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:25:26,901 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 21:25:26,966 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 21:25:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:25:27,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-05 21:25:27,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:25:27,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-05 21:25:27,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-05 21:25:27,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-05 21:25:27,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-05 21:25:27,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-05 21:25:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:25:27,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:25:32,258 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:25:32,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 56 [2022-12-05 21:25:32,269 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-05 21:25:32,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 798 treesize of output 773 [2022-12-05 21:25:32,282 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-05 21:25:32,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 766 treesize of output 574 [2022-12-05 21:25:32,291 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-05 21:25:32,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 574 treesize of output 478 [2022-12-05 21:25:32,298 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-05 21:25:32,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 239 treesize of output 215 [2022-12-05 21:25:32,307 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-05 21:25:32,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 454 treesize of output 406 [2022-12-05 21:25:32,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:25:32,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174343584] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:25:32,708 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:25:32,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 25 [2022-12-05 21:25:32,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740416805] [2022-12-05 21:25:32,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:25:32,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-05 21:25:32,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:25:32,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-05 21:25:32,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=526, Unknown=20, NotChecked=0, Total=702 [2022-12-05 21:25:32,710 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 21:25:32,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 265 flow. Second operand has 27 states, 26 states have (on average 3.230769230769231) internal successors, (84), 26 states have internal predecessors, (84), 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 21:25:32,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:25:32,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 21:25:32,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:25:43,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 21:25:45,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 21:25:48,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 21:25:50,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 21:25:52,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 21:25:54,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 21:25:54,409 INFO L130 PetriNetUnfolder]: 3825/5690 cut-off events. [2022-12-05 21:25:54,409 INFO L131 PetriNetUnfolder]: For 8283/8283 co-relation queries the response was YES. [2022-12-05 21:25:54,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16657 conditions, 5690 events. 3825/5690 cut-off events. For 8283/8283 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 28014 event pairs, 1006 based on Foata normal form. 5/5692 useless extension candidates. Maximal degree in co-relation 10021. Up to 2593 conditions per place. [2022-12-05 21:25:54,434 INFO L137 encePairwiseOnDemand]: 13/33 looper letters, 153 selfloop transitions, 60 changer transitions 85/298 dead transitions. [2022-12-05 21:25:54,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 298 transitions, 1706 flow [2022-12-05 21:25:54,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-05 21:25:54,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-05 21:25:54,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 282 transitions. [2022-12-05 21:25:54,436 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3164983164983165 [2022-12-05 21:25:54,436 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 265 flow. Second operand 27 states and 282 transitions. [2022-12-05 21:25:54,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 298 transitions, 1706 flow [2022-12-05 21:25:54,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 298 transitions, 1688 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-12-05 21:25:54,448 INFO L231 Difference]: Finished difference. Result has 94 places, 104 transitions, 874 flow [2022-12-05 21:25:54,448 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=874, PETRI_PLACES=94, PETRI_TRANSITIONS=104} [2022-12-05 21:25:54,450 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 56 predicate places. [2022-12-05 21:25:54,450 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 104 transitions, 874 flow [2022-12-05 21:25:54,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.230769230769231) internal successors, (84), 26 states have internal predecessors, (84), 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 21:25:54,450 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:25:54,450 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, 1, 1, 1, 1] [2022-12-05 21:25:54,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-05 21:25:54,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:25:54,655 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:25:54,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:25:54,656 INFO L85 PathProgramCache]: Analyzing trace with hash -945706236, now seen corresponding path program 1 times [2022-12-05 21:25:54,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:25:54,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850577613] [2022-12-05 21:25:54,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:25:54,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:25:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:25:54,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 21:25:54,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:25:54,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850577613] [2022-12-05 21:25:54,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850577613] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:25:54,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437893703] [2022-12-05 21:25:54,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:25:54,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:25:54,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:25:54,973 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 21:25:54,974 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 21:25:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:25:55,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-05 21:25:55,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:25:55,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 21:25:55,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:25:55,956 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:25:55,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 966 treesize of output 1045 [2022-12-05 21:25:57,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 21:25:57,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437893703] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:25:57,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:25:57,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-12-05 21:25:57,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778966625] [2022-12-05 21:25:57,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:25:57,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-05 21:25:57,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:25:57,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-05 21:25:57,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-12-05 21:25:57,170 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 21:25:57,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 104 transitions, 874 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 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 21:25:57,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:25:57,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 21:25:57,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:25:58,318 INFO L130 PetriNetUnfolder]: 4919/7335 cut-off events. [2022-12-05 21:25:58,318 INFO L131 PetriNetUnfolder]: For 18731/18731 co-relation queries the response was YES. [2022-12-05 21:25:58,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25671 conditions, 7335 events. 4919/7335 cut-off events. For 18731/18731 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 37235 event pairs, 1719 based on Foata normal form. 392/7724 useless extension candidates. Maximal degree in co-relation 24126. Up to 2658 conditions per place. [2022-12-05 21:25:58,354 INFO L137 encePairwiseOnDemand]: 28/33 looper letters, 136 selfloop transitions, 21 changer transitions 8/165 dead transitions. [2022-12-05 21:25:58,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 165 transitions, 1469 flow [2022-12-05 21:25:58,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 21:25:58,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 21:25:58,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2022-12-05 21:25:58,368 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2022-12-05 21:25:58,368 INFO L175 Difference]: Start difference. First operand has 94 places, 104 transitions, 874 flow. Second operand 6 states and 98 transitions. [2022-12-05 21:25:58,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 165 transitions, 1469 flow [2022-12-05 21:25:58,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 165 transitions, 1401 flow, removed 32 selfloop flow, removed 3 redundant places. [2022-12-05 21:25:58,388 INFO L231 Difference]: Finished difference. Result has 98 places, 107 transitions, 921 flow [2022-12-05 21:25:58,388 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=921, PETRI_PLACES=98, PETRI_TRANSITIONS=107} [2022-12-05 21:25:58,388 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 60 predicate places. [2022-12-05 21:25:58,388 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 107 transitions, 921 flow [2022-12-05 21:25:58,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 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 21:25:58,388 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:25:58,389 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, 1, 1, 1, 1] [2022-12-05 21:25:58,404 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 21:25:58,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:25:58,594 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:25:58,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:25:58,595 INFO L85 PathProgramCache]: Analyzing trace with hash -675143180, now seen corresponding path program 1 times [2022-12-05 21:25:58,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:25:58,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507752436] [2022-12-05 21:25:58,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:25:58,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:25:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:25:58,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 21:25:58,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:25:58,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507752436] [2022-12-05 21:25:58,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507752436] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:25:58,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599565214] [2022-12-05 21:25:58,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:25:58,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:25:58,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:25:58,941 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 21:25:58,943 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 21:25:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:25:59,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-05 21:25:59,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:25:59,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:25:59,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 21:25:59,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599565214] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:25:59,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 21:25:59,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-12-05 21:25:59,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571579183] [2022-12-05 21:25:59,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:25:59,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 21:25:59,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:25:59,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 21:25:59,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-05 21:25:59,149 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 21:25:59,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 107 transitions, 921 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 21:25:59,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:25:59,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 21:25:59,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:26:01,105 INFO L130 PetriNetUnfolder]: 10049/15287 cut-off events. [2022-12-05 21:26:01,106 INFO L131 PetriNetUnfolder]: For 46499/46499 co-relation queries the response was YES. [2022-12-05 21:26:01,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53874 conditions, 15287 events. 10049/15287 cut-off events. For 46499/46499 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 94154 event pairs, 7487 based on Foata normal form. 648/15931 useless extension candidates. Maximal degree in co-relation 52545. Up to 4780 conditions per place. [2022-12-05 21:26:01,188 INFO L137 encePairwiseOnDemand]: 24/33 looper letters, 185 selfloop transitions, 33 changer transitions 0/218 dead transitions. [2022-12-05 21:26:01,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 218 transitions, 2266 flow [2022-12-05 21:26:01,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 21:26:01,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 21:26:01,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2022-12-05 21:26:01,189 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5404040404040404 [2022-12-05 21:26:01,190 INFO L175 Difference]: Start difference. First operand has 98 places, 107 transitions, 921 flow. Second operand 6 states and 107 transitions. [2022-12-05 21:26:01,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 218 transitions, 2266 flow [2022-12-05 21:26:01,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 218 transitions, 2234 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-05 21:26:01,318 INFO L231 Difference]: Finished difference. Result has 104 places, 111 transitions, 1030 flow [2022-12-05 21:26:01,318 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1030, PETRI_PLACES=104, PETRI_TRANSITIONS=111} [2022-12-05 21:26:01,318 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 66 predicate places. [2022-12-05 21:26:01,318 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 111 transitions, 1030 flow [2022-12-05 21:26:01,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 21:26:01,319 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:26:01,319 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, 1, 1, 1, 1, 1] [2022-12-05 21:26:01,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-05 21:26:01,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:26:01,524 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:26:01,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:26:01,525 INFO L85 PathProgramCache]: Analyzing trace with hash 773694979, now seen corresponding path program 1 times [2022-12-05 21:26:01,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:26:01,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225282925] [2022-12-05 21:26:01,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:26:01,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:26:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:26:02,012 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 21:26:02,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:26:02,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225282925] [2022-12-05 21:26:02,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225282925] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:26:02,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864494513] [2022-12-05 21:26:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:26:02,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:26:02,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:26:02,015 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 21:26:02,017 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 21:26:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:26:02,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-05 21:26:02,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:26:02,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:26:02,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:26:02,950 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:26:02,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 966 treesize of output 1045 [2022-12-05 21:26:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:26:04,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864494513] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:26:04,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:26:04,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2022-12-05 21:26:04,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808716995] [2022-12-05 21:26:04,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:26:04,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-05 21:26:04,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:26:04,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-05 21:26:04,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-12-05 21:26:04,394 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 21:26:04,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 111 transitions, 1030 flow. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 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 21:26:04,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:26:04,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 21:26:04,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:26:06,326 INFO L130 PetriNetUnfolder]: 9655/14769 cut-off events. [2022-12-05 21:26:06,326 INFO L131 PetriNetUnfolder]: For 37494/37494 co-relation queries the response was YES. [2022-12-05 21:26:06,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51446 conditions, 14769 events. 9655/14769 cut-off events. For 37494/37494 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 90207 event pairs, 2443 based on Foata normal form. 120/14888 useless extension candidates. Maximal degree in co-relation 50128. Up to 6285 conditions per place. [2022-12-05 21:26:06,404 INFO L137 encePairwiseOnDemand]: 29/33 looper letters, 120 selfloop transitions, 20 changer transitions 17/157 dead transitions. [2022-12-05 21:26:06,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 157 transitions, 1439 flow [2022-12-05 21:26:06,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 21:26:06,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 21:26:06,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2022-12-05 21:26:06,405 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2022-12-05 21:26:06,405 INFO L175 Difference]: Start difference. First operand has 104 places, 111 transitions, 1030 flow. Second operand 6 states and 91 transitions. [2022-12-05 21:26:06,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 157 transitions, 1439 flow [2022-12-05 21:26:06,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 157 transitions, 1418 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-12-05 21:26:06,522 INFO L231 Difference]: Finished difference. Result has 109 places, 106 transitions, 975 flow [2022-12-05 21:26:06,523 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=975, PETRI_PLACES=109, PETRI_TRANSITIONS=106} [2022-12-05 21:26:06,523 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 71 predicate places. [2022-12-05 21:26:06,523 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 106 transitions, 975 flow [2022-12-05 21:26:06,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 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 21:26:06,523 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:26:06,523 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 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 21:26:06,544 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 21:26:06,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:26:06,729 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:26:06,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:26:06,729 INFO L85 PathProgramCache]: Analyzing trace with hash 268656684, now seen corresponding path program 2 times [2022-12-05 21:26:06,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:26:06,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233186490] [2022-12-05 21:26:06,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:26:06,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:26:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:26:07,495 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 21:26:07,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:26:07,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233186490] [2022-12-05 21:26:07,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233186490] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:26:07,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910316896] [2022-12-05 21:26:07,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 21:26:07,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:26:07,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:26:07,509 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 21:26:07,573 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 21:26:07,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 21:26:07,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:26:07,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-05 21:26:07,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:26:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:26:07,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:26:08,613 INFO L321 Elim1Store]: treesize reduction 114, result has 69.9 percent of original size [2022-12-05 21:26:08,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 1056 treesize of output 1200 [2022-12-05 21:26:10,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:26:10,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910316896] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:26:10,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:26:10,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2022-12-05 21:26:10,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962823764] [2022-12-05 21:26:10,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:26:10,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 21:26:10,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:26:10,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 21:26:10,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-12-05 21:26:10,347 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 21:26:10,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 106 transitions, 975 flow. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 15 states have internal predecessors, (70), 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 21:26:10,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:26:10,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 21:26:10,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:26:12,544 INFO L130 PetriNetUnfolder]: 8799/13545 cut-off events. [2022-12-05 21:26:12,544 INFO L131 PetriNetUnfolder]: For 39582/39582 co-relation queries the response was YES. [2022-12-05 21:26:12,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47884 conditions, 13545 events. 8799/13545 cut-off events. For 39582/39582 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 80603 event pairs, 2353 based on Foata normal form. 272/13816 useless extension candidates. Maximal degree in co-relation 47129. Up to 3236 conditions per place. [2022-12-05 21:26:12,609 INFO L137 encePairwiseOnDemand]: 21/33 looper letters, 175 selfloop transitions, 63 changer transitions 68/306 dead transitions. [2022-12-05 21:26:12,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 306 transitions, 2640 flow [2022-12-05 21:26:12,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-05 21:26:12,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-05 21:26:12,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 227 transitions. [2022-12-05 21:26:12,611 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.40463458110516937 [2022-12-05 21:26:12,611 INFO L175 Difference]: Start difference. First operand has 109 places, 106 transitions, 975 flow. Second operand 17 states and 227 transitions. [2022-12-05 21:26:12,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 306 transitions, 2640 flow [2022-12-05 21:26:12,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 306 transitions, 2560 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-05 21:26:12,727 INFO L231 Difference]: Finished difference. Result has 124 places, 118 transitions, 1358 flow [2022-12-05 21:26:12,728 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1358, PETRI_PLACES=124, PETRI_TRANSITIONS=118} [2022-12-05 21:26:12,728 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 86 predicate places. [2022-12-05 21:26:12,728 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 118 transitions, 1358 flow [2022-12-05 21:26:12,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 15 states have internal predecessors, (70), 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 21:26:12,728 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:26:12,728 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:26:12,738 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 21:26:12,934 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,SelfDestructingSolverStorable11 [2022-12-05 21:26:12,934 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:26:12,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:26:12,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1789402921, now seen corresponding path program 1 times [2022-12-05 21:26:12,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:26:12,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285935779] [2022-12-05 21:26:12,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:26:12,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:26:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:26:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 21:26:13,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:26:13,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285935779] [2022-12-05 21:26:13,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285935779] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:26:13,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232679855] [2022-12-05 21:26:13,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:26:13,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:26:13,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:26:13,327 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 21:26:13,329 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 21:26:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:26:13,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 21:26:13,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:26:13,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 21:26:13,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:26:15,205 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:26:15,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 685 treesize of output 850 [2022-12-05 21:26:21,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 21:26:21,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232679855] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:26:21,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:26:21,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2022-12-05 21:26:21,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366143405] [2022-12-05 21:26:21,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:26:21,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-05 21:26:21,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:26:21,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-05 21:26:21,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-12-05 21:26:21,290 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 21:26:21,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 118 transitions, 1358 flow. Second operand has 15 states, 15 states have (on average 5.6) internal successors, (84), 14 states have internal predecessors, (84), 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 21:26:21,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:26:21,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 21:26:21,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:26:23,568 INFO L130 PetriNetUnfolder]: 8968/14054 cut-off events. [2022-12-05 21:26:23,568 INFO L131 PetriNetUnfolder]: For 59333/59333 co-relation queries the response was YES. [2022-12-05 21:26:23,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49410 conditions, 14054 events. 8968/14054 cut-off events. For 59333/59333 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 88177 event pairs, 2633 based on Foata normal form. 630/14683 useless extension candidates. Maximal degree in co-relation 49174. Up to 3492 conditions per place. [2022-12-05 21:26:23,628 INFO L137 encePairwiseOnDemand]: 23/33 looper letters, 169 selfloop transitions, 59 changer transitions 51/279 dead transitions. [2022-12-05 21:26:23,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 279 transitions, 2630 flow [2022-12-05 21:26:23,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-05 21:26:23,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-05 21:26:23,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 204 transitions. [2022-12-05 21:26:23,630 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2022-12-05 21:26:23,630 INFO L175 Difference]: Start difference. First operand has 124 places, 118 transitions, 1358 flow. Second operand 14 states and 204 transitions. [2022-12-05 21:26:23,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 279 transitions, 2630 flow [2022-12-05 21:26:23,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 279 transitions, 2418 flow, removed 51 selfloop flow, removed 15 redundant places. [2022-12-05 21:26:23,803 INFO L231 Difference]: Finished difference. Result has 112 places, 115 transitions, 1300 flow [2022-12-05 21:26:23,803 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1300, PETRI_PLACES=112, PETRI_TRANSITIONS=115} [2022-12-05 21:26:23,804 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 74 predicate places. [2022-12-05 21:26:23,804 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 115 transitions, 1300 flow [2022-12-05 21:26:23,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 14 states have internal predecessors, (84), 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 21:26:23,804 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:26:23,804 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:26:23,809 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 21:26:24,006 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,SelfDestructingSolverStorable12 [2022-12-05 21:26:24,006 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:26:24,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:26:24,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1580404899, now seen corresponding path program 1 times [2022-12-05 21:26:24,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:26:24,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640014981] [2022-12-05 21:26:24,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:26:24,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:26:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:26:25,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:26:25,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:26:25,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640014981] [2022-12-05 21:26:25,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640014981] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:26:25,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012440160] [2022-12-05 21:26:25,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:26:25,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:26:25,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:26:25,032 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:26:25,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-05 21:26:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:26:25,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-05 21:26:25,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:26:25,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 21:26:25,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:26:25,985 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:26:25,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 439 treesize of output 630 [2022-12-05 21:26:30,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-05 21:26:30,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012440160] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:26:30,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:26:30,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 3] total 13 [2022-12-05 21:26:30,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348688783] [2022-12-05 21:26:30,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:26:30,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-05 21:26:30,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:26:30,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-05 21:26:30,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-12-05 21:26:30,603 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 21:26:30,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 115 transitions, 1300 flow. Second operand has 15 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:26:30,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:26:30,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 21:26:30,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:26:32,865 INFO L130 PetriNetUnfolder]: 11123/17568 cut-off events. [2022-12-05 21:26:32,865 INFO L131 PetriNetUnfolder]: For 53602/53602 co-relation queries the response was YES. [2022-12-05 21:26:32,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60427 conditions, 17568 events. 11123/17568 cut-off events. For 53602/53602 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 115998 event pairs, 4468 based on Foata normal form. 12/17579 useless extension candidates. Maximal degree in co-relation 56014. Up to 4542 conditions per place. [2022-12-05 21:26:32,944 INFO L137 encePairwiseOnDemand]: 21/33 looper letters, 104 selfloop transitions, 75 changer transitions 98/277 dead transitions. [2022-12-05 21:26:32,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 277 transitions, 2773 flow [2022-12-05 21:26:32,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-05 21:26:32,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-05 21:26:32,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 184 transitions. [2022-12-05 21:26:32,946 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4289044289044289 [2022-12-05 21:26:32,946 INFO L175 Difference]: Start difference. First operand has 112 places, 115 transitions, 1300 flow. Second operand 13 states and 184 transitions. [2022-12-05 21:26:32,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 277 transitions, 2773 flow [2022-12-05 21:26:33,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 277 transitions, 2679 flow, removed 39 selfloop flow, removed 2 redundant places. [2022-12-05 21:26:33,235 INFO L231 Difference]: Finished difference. Result has 126 places, 119 transitions, 1506 flow [2022-12-05 21:26:33,235 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1223, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1506, PETRI_PLACES=126, PETRI_TRANSITIONS=119} [2022-12-05 21:26:33,235 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 88 predicate places. [2022-12-05 21:26:33,235 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 119 transitions, 1506 flow [2022-12-05 21:26:33,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:26:33,236 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:26:33,236 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 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 21:26:33,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-05 21:26:33,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-05 21:26:33,441 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:26:33,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:26:33,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1407291115, now seen corresponding path program 1 times [2022-12-05 21:26:33,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:26:33,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949299983] [2022-12-05 21:26:33,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:26:33,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:26:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:26:34,309 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:26:34,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:26:34,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949299983] [2022-12-05 21:26:34,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949299983] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:26:34,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074063850] [2022-12-05 21:26:34,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:26:34,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:26:34,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:26:34,311 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:26:34,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-05 21:26:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:26:34,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-05 21:26:34,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:26:34,681 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:26:34,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:26:36,289 INFO L321 Elim1Store]: treesize reduction 114, result has 69.9 percent of original size [2022-12-05 21:26:36,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 1138 treesize of output 1258 [2022-12-05 21:26:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:26:41,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074063850] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:26:41,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:26:41,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 17 [2022-12-05 21:26:41,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130431613] [2022-12-05 21:26:41,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:26:41,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 21:26:41,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:26:41,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 21:26:41,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-12-05 21:26:41,012 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 21:26:41,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 119 transitions, 1506 flow. Second operand has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 17 states have internal predecessors, (73), 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 21:26:41,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:26:41,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 21:26:41,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:26:43,592 INFO L130 PetriNetUnfolder]: 9931/15406 cut-off events. [2022-12-05 21:26:43,592 INFO L131 PetriNetUnfolder]: For 60249/60249 co-relation queries the response was YES. [2022-12-05 21:26:43,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55962 conditions, 15406 events. 9931/15406 cut-off events. For 60249/60249 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 96743 event pairs, 2730 based on Foata normal form. 160/15566 useless extension candidates. Maximal degree in co-relation 49855. Up to 4655 conditions per place. [2022-12-05 21:26:43,677 INFO L137 encePairwiseOnDemand]: 21/33 looper letters, 131 selfloop transitions, 86 changer transitions 95/312 dead transitions. [2022-12-05 21:26:43,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 312 transitions, 3067 flow [2022-12-05 21:26:43,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 21:26:43,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 21:26:43,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 227 transitions. [2022-12-05 21:26:43,680 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3620414673046252 [2022-12-05 21:26:43,680 INFO L175 Difference]: Start difference. First operand has 126 places, 119 transitions, 1506 flow. Second operand 19 states and 227 transitions. [2022-12-05 21:26:43,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 312 transitions, 3067 flow [2022-12-05 21:26:44,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 312 transitions, 2774 flow, removed 60 selfloop flow, removed 15 redundant places. [2022-12-05 21:26:44,007 INFO L231 Difference]: Finished difference. Result has 127 places, 140 transitions, 1841 flow [2022-12-05 21:26:44,007 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1315, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1841, PETRI_PLACES=127, PETRI_TRANSITIONS=140} [2022-12-05 21:26:44,008 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 89 predicate places. [2022-12-05 21:26:44,008 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 140 transitions, 1841 flow [2022-12-05 21:26:44,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 17 states have internal predecessors, (73), 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 21:26:44,008 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:26:44,008 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:26:44,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-05 21:26:44,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-05 21:26:44,213 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:26:44,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:26:44,213 INFO L85 PathProgramCache]: Analyzing trace with hash -311783834, now seen corresponding path program 2 times [2022-12-05 21:26:44,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:26:44,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268519327] [2022-12-05 21:26:44,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:26:44,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:26:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:26:45,450 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:26:45,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:26:45,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268519327] [2022-12-05 21:26:45,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268519327] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:26:45,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52511082] [2022-12-05 21:26:45,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 21:26:45,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:26:45,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:26:45,452 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:26:45,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-05 21:26:45,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 21:26:45,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:26:45,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-05 21:26:45,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:26:45,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-05 21:26:45,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-05 21:26:45,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-05 21:26:45,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-05 21:26:45,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-05 21:26:46,264 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 21:26:46,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:26:58,652 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:26:58,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 57 [2022-12-05 21:26:58,685 INFO L321 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2022-12-05 21:26:58,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107510 treesize of output 103174 [2022-12-05 21:26:58,932 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:26:58,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103158 treesize of output 89863 [2022-12-05 21:26:59,185 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:26:59,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89846 treesize of output 83207 [2022-12-05 21:26:59,465 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:26:59,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83190 treesize of output 56583 [2022-12-05 21:26:59,750 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:26:59,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56566 treesize of output 53255 Received shutdown request... [2022-12-05 21:39:24,139 WARN L249 SmtUtils]: Removed 1 from assertion stack [2022-12-05 21:39:24,141 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-05 21:39:24,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-05 21:39:24,158 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-05 21:39:24,165 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 21:39:24,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-05 21:39:24,347 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. [2022-12-05 21:39:24,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-12-05 21:39:24,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-05 21:39:24,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-12-05 21:39:24,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-05 21:39:24,349 INFO L458 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:39:24,352 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 21:39:24,352 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 21:39:24,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:39:24 BasicIcfg [2022-12-05 21:39:24,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 21:39:24,354 INFO L158 Benchmark]: Toolchain (without parser) took 857565.33ms. Allocated memory was 212.9MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 188.4MB in the beginning and 863.6MB in the end (delta: -675.2MB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2022-12-05 21:39:24,354 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 127.9MB. Free memory was 108.9MB in the beginning and 108.9MB in the end (delta: 45.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 21:39:24,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.41ms. Allocated memory is still 212.9MB. Free memory was 188.4MB in the beginning and 171.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-12-05 21:39:24,354 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.63ms. Allocated memory is still 212.9MB. Free memory was 171.6MB in the beginning and 168.2MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-05 21:39:24,355 INFO L158 Benchmark]: Boogie Preprocessor took 43.09ms. Allocated memory is still 212.9MB. Free memory was 168.2MB in the beginning and 165.7MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-05 21:39:24,355 INFO L158 Benchmark]: RCFGBuilder took 792.23ms. Allocated memory is still 212.9MB. Free memory was 165.7MB in the beginning and 138.6MB in the end (delta: 27.1MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2022-12-05 21:39:24,355 INFO L158 Benchmark]: TraceAbstraction took 856388.23ms. Allocated memory was 212.9MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 137.6MB in the beginning and 863.6MB in the end (delta: -726.0MB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2022-12-05 21:39:24,357 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 127.9MB. Free memory was 108.9MB in the beginning and 108.9MB in the end (delta: 45.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 295.41ms. Allocated memory is still 212.9MB. Free memory was 188.4MB in the beginning and 171.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.63ms. Allocated memory is still 212.9MB. Free memory was 171.6MB in the beginning and 168.2MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.09ms. Allocated memory is still 212.9MB. Free memory was 168.2MB in the beginning and 165.7MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 792.23ms. Allocated memory is still 212.9MB. Free memory was 165.7MB in the beginning and 138.6MB in the end (delta: 27.1MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * TraceAbstraction took 856388.23ms. Allocated memory was 212.9MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 137.6MB in the beginning and 863.6MB in the end (delta: -726.0MB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.1s, 291 PlacesBefore, 38 PlacesAfterwards, 315 TransitionsBefore, 33 TransitionsAfterwards, 5184 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 196 TrivialYvCompositions, 57 ConcurrentYvCompositions, 21 ChoiceCompositions, 274 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3610, independent: 3610, independent conditional: 3610, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 3610, independent: 3610, independent conditional: 0, independent unconditional: 3610, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 3610, independent: 3610, independent conditional: 0, independent unconditional: 3610, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 3610, independent: 3610, independent conditional: 0, independent unconditional: 3610, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2419, independent: 2419, independent conditional: 0, independent unconditional: 2419, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2419, independent: 2419, independent conditional: 0, independent unconditional: 2419, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3610, independent: 1191, independent conditional: 0, independent unconditional: 1191, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 2419, unknown conditional: 0, unknown unconditional: 2419] , Statistics on independence cache: Total cache size (in pairs): 4536, Positive cache size: 4536, Positive conditional cache size: 0, Positive unconditional cache size: 4536, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 206]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 197]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 198]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 199]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 347 locations, 5 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: 856.3s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 40.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.2s, HoareTripleCheckerStatistics: 124 mSolverCounterUnknown, 3227 SdHoareTripleChecker+Valid, 15.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3227 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 15.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 216 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3764 IncrementalHoareTripleChecker+Invalid, 4104 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 216 mSolverCounterUnsat, 0 mSDtfsCounter, 3764 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 698 GetRequests, 499 SyntacticMatches, 1 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 13.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1841occurred in iteration=15, InterpolantAutomatonStates: 140, 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: 0.3s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 39.7s InterpolantComputationTime, 739 NumberOfCodeBlocks, 739 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 967 ConstructedInterpolants, 38 QuantifiedInterpolants, 17101 SizeOfPredicates, 452 NumberOfNonLiveVariables, 4673 ConjunctsInSsa, 134 ConjunctsInUnsatCore, 35 InterpolantComputations, 6 PerfectInterpolantSequences, 101/154 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