/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 03:12:04,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 03:12:04,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 03:12:04,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 03:12:04,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 03:12:04,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 03:12:04,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 03:12:04,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 03:12:04,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 03:12:04,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 03:12:04,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 03:12:04,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 03:12:04,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 03:12:04,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 03:12:04,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 03:12:04,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 03:12:04,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 03:12:04,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 03:12:04,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 03:12:04,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 03:12:04,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 03:12:04,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 03:12:04,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 03:12:04,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 03:12:04,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 03:12:04,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 03:12:04,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 03:12:04,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 03:12:04,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 03:12:04,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 03:12:04,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 03:12:04,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 03:12:04,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 03:12:04,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 03:12:04,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 03:12:04,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 03:12:04,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 03:12:04,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 03:12:04,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 03:12:04,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 03:12:04,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 03:12:04,131 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-VariableLbe.epf [2023-01-28 03:12:04,154 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 03:12:04,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 03:12:04,155 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 03:12:04,155 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 03:12:04,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 03:12:04,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 03:12:04,156 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 03:12:04,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 03:12:04,156 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 03:12:04,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 03:12:04,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 03:12:04,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 03:12:04,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 03:12:04,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 03:12:04,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 03:12:04,157 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 03:12:04,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 03:12:04,157 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 03:12:04,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 03:12:04,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 03:12:04,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 03:12:04,157 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 03:12:04,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 03:12:04,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:12:04,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 03:12:04,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 03:12:04,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 03:12:04,158 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 03:12:04,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 03:12:04,158 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 03:12:04,158 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 03:12:04,158 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 03:12:04,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 03:12:04,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 03:12:04,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 03:12:04,352 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 03:12:04,353 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 03:12:04,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2023-01-28 03:12:05,317 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 03:12:05,476 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 03:12:05,476 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2023-01-28 03:12:05,480 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9d45f4aa/e6d46421b8114dfcb38afc08552bcbb9/FLAG30077e063 [2023-01-28 03:12:05,900 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9d45f4aa/e6d46421b8114dfcb38afc08552bcbb9 [2023-01-28 03:12:05,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 03:12:05,903 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 03:12:05,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 03:12:05,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 03:12:05,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 03:12:05,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:12:05" (1/1) ... [2023-01-28 03:12:05,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e4e8915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:12:05, skipping insertion in model container [2023-01-28 03:12:05,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:12:05" (1/1) ... [2023-01-28 03:12:05,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 03:12:05,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 03:12:06,026 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c[2618,2631] [2023-01-28 03:12:06,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:12:06,037 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 03:12:06,058 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c[2618,2631] [2023-01-28 03:12:06,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:12:06,077 INFO L208 MainTranslator]: Completed translation [2023-01-28 03:12:06,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:12:06 WrapperNode [2023-01-28 03:12:06,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 03:12:06,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 03:12:06,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 03:12:06,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 03:12:06,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:12:06" (1/1) ... [2023-01-28 03:12:06,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:12:06" (1/1) ... [2023-01-28 03:12:06,104 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 193 [2023-01-28 03:12:06,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 03:12:06,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 03:12:06,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 03:12:06,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 03:12:06,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:12:06" (1/1) ... [2023-01-28 03:12:06,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:12:06" (1/1) ... [2023-01-28 03:12:06,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:12:06" (1/1) ... [2023-01-28 03:12:06,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:12:06" (1/1) ... [2023-01-28 03:12:06,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:12:06" (1/1) ... [2023-01-28 03:12:06,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:12:06" (1/1) ... [2023-01-28 03:12:06,126 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:12:06" (1/1) ... [2023-01-28 03:12:06,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:12:06" (1/1) ... [2023-01-28 03:12:06,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 03:12:06,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 03:12:06,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 03:12:06,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 03:12:06,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:12:06" (1/1) ... [2023-01-28 03:12:06,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:12:06,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:12:06,150 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) [2023-01-28 03:12:06,158 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 [2023-01-28 03:12:06,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 03:12:06,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 03:12:06,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 03:12:06,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 03:12:06,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 03:12:06,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-28 03:12:06,180 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 03:12:06,180 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 03:12:06,180 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 03:12:06,180 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 03:12:06,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 03:12:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 03:12:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 03:12:06,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 03:12:06,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 03:12:06,183 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 03:12:06,278 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 03:12:06,279 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 03:12:06,536 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 03:12:06,542 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 03:12:06,542 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-01-28 03:12:06,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:12:06 BoogieIcfgContainer [2023-01-28 03:12:06,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 03:12:06,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 03:12:06,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 03:12:06,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 03:12:06,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 03:12:05" (1/3) ... [2023-01-28 03:12:06,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eaf8afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:12:06, skipping insertion in model container [2023-01-28 03:12:06,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:12:06" (2/3) ... [2023-01-28 03:12:06,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eaf8afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:12:06, skipping insertion in model container [2023-01-28 03:12:06,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:12:06" (3/3) ... [2023-01-28 03:12:06,553 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2023-01-28 03:12:06,565 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 03:12:06,565 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 03:12:06,565 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 03:12:06,619 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 03:12:06,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 257 transitions, 530 flow [2023-01-28 03:12:06,704 INFO L130 PetriNetUnfolder]: 26/255 cut-off events. [2023-01-28 03:12:06,704 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 03:12:06,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 255 events. 26/255 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 273 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 191. Up to 2 conditions per place. [2023-01-28 03:12:06,708 INFO L82 GeneralOperation]: Start removeDead. Operand has 238 places, 257 transitions, 530 flow [2023-01-28 03:12:06,717 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 247 transitions, 506 flow [2023-01-28 03:12:06,719 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 03:12:06,736 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 247 transitions, 506 flow [2023-01-28 03:12:06,738 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 247 transitions, 506 flow [2023-01-28 03:12:06,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 247 transitions, 506 flow [2023-01-28 03:12:06,817 INFO L130 PetriNetUnfolder]: 26/247 cut-off events. [2023-01-28 03:12:06,817 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 03:12:06,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 247 events. 26/247 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 273 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 191. Up to 2 conditions per place. [2023-01-28 03:12:06,819 INFO L119 LiptonReduction]: Number of co-enabled transitions 972 [2023-01-28 03:12:21,507 INFO L134 LiptonReduction]: Checked pairs total: 1519 [2023-01-28 03:12:21,507 INFO L136 LiptonReduction]: Total number of compositions: 276 [2023-01-28 03:12:21,520 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 03:12:21,524 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;@58ed2b8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 03:12:21,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 03:12:21,528 INFO L130 PetriNetUnfolder]: 7/27 cut-off events. [2023-01-28 03:12:21,528 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 03:12:21,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:12:21,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:12:21,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:12:21,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:12:21,532 INFO L85 PathProgramCache]: Analyzing trace with hash -2101152341, now seen corresponding path program 1 times [2023-01-28 03:12:21,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:12:21,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649119509] [2023-01-28 03:12:21,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:21,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:12:21,593 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 03:12:21,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1820835857] [2023-01-28 03:12:21,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:21,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:21,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:12:21,597 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) [2023-01-28 03:12:21,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 03:12:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:12:21,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 03:12:21,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:12:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:21,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 03:12:21,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:12:21,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649119509] [2023-01-28 03:12:21,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 03:12:21,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820835857] [2023-01-28 03:12:21,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820835857] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:12:21,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:12:21,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 03:12:21,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521175491] [2023-01-28 03:12:21,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:12:21,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:12:21,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:12:21,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:12:21,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 03:12:21,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 533 [2023-01-28 03:12:21,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 219.5) internal successors, (878), 4 states have internal predecessors, (878), 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) [2023-01-28 03:12:21,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:12:21,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 533 [2023-01-28 03:12:21,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:12:21,893 INFO L130 PetriNetUnfolder]: 205/348 cut-off events. [2023-01-28 03:12:21,894 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-01-28 03:12:21,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 708 conditions, 348 events. 205/348 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1363 event pairs, 100 based on Foata normal form. 1/240 useless extension candidates. Maximal degree in co-relation 278. Up to 166 conditions per place. [2023-01-28 03:12:21,896 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 26 selfloop transitions, 2 changer transitions 16/47 dead transitions. [2023-01-28 03:12:21,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 47 transitions, 206 flow [2023-01-28 03:12:21,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 03:12:21,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 03:12:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 909 transitions. [2023-01-28 03:12:21,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263602251407129 [2023-01-28 03:12:21,907 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 909 transitions. [2023-01-28 03:12:21,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 909 transitions. [2023-01-28 03:12:21,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:12:21,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 909 transitions. [2023-01-28 03:12:21,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 227.25) internal successors, (909), 4 states have internal predecessors, (909), 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) [2023-01-28 03:12:21,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 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) [2023-01-28 03:12:21,919 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 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) [2023-01-28 03:12:21,920 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 68 flow. Second operand 4 states and 909 transitions. [2023-01-28 03:12:21,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 47 transitions, 206 flow [2023-01-28 03:12:21,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 47 transitions, 190 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 03:12:21,923 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 74 flow [2023-01-28 03:12:21,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-01-28 03:12:21,926 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-01-28 03:12:21,926 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 74 flow [2023-01-28 03:12:21,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 219.5) internal successors, (878), 4 states have internal predecessors, (878), 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) [2023-01-28 03:12:21,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:12:21,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:12:21,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 03:12:22,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-01-28 03:12:22,132 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:12:22,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:12:22,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1311819515, now seen corresponding path program 1 times [2023-01-28 03:12:22,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:12:22,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804934858] [2023-01-28 03:12:22,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:22,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:12:22,142 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 03:12:22,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271131604] [2023-01-28 03:12:22,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:22,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:22,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:12:22,144 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) [2023-01-28 03:12:22,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 03:12:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:12:22,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 03:12:22,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:12:22,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:22,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:12:22,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:22,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:12:22,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804934858] [2023-01-28 03:12:22,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 03:12:22,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271131604] [2023-01-28 03:12:22,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271131604] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:12:22,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-28 03:12:22,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-01-28 03:12:22,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937958215] [2023-01-28 03:12:22,319 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-28 03:12:22,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 03:12:22,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:12:22,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 03:12:22,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 03:12:22,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 533 [2023-01-28 03:12:22,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 214.16666666666666) internal successors, (1285), 6 states have internal predecessors, (1285), 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) [2023-01-28 03:12:22,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:12:22,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 533 [2023-01-28 03:12:22,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:12:22,429 INFO L130 PetriNetUnfolder]: 194/311 cut-off events. [2023-01-28 03:12:22,429 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 03:12:22,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 311 events. 194/311 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1013 event pairs, 32 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 629. Up to 114 conditions per place. [2023-01-28 03:12:22,433 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 40 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2023-01-28 03:12:22,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 47 transitions, 204 flow [2023-01-28 03:12:22,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 03:12:22,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 03:12:22,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1312 transitions. [2023-01-28 03:12:22,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2023-01-28 03:12:22,436 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1312 transitions. [2023-01-28 03:12:22,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1312 transitions. [2023-01-28 03:12:22,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:12:22,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1312 transitions. [2023-01-28 03:12:22,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 218.66666666666666) internal successors, (1312), 6 states have internal predecessors, (1312), 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) [2023-01-28 03:12:22,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 533.0) internal successors, (3731), 7 states have internal predecessors, (3731), 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) [2023-01-28 03:12:22,444 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 533.0) internal successors, (3731), 7 states have internal predecessors, (3731), 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) [2023-01-28 03:12:22,444 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 74 flow. Second operand 6 states and 1312 transitions. [2023-01-28 03:12:22,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 47 transitions, 204 flow [2023-01-28 03:12:22,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 47 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 03:12:22,445 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 103 flow [2023-01-28 03:12:22,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-01-28 03:12:22,446 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2023-01-28 03:12:22,446 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 103 flow [2023-01-28 03:12:22,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 214.16666666666666) internal successors, (1285), 6 states have internal predecessors, (1285), 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) [2023-01-28 03:12:22,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:12:22,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:12:22,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 03:12:22,651 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,SelfDestructingSolverStorable1 [2023-01-28 03:12:22,654 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:12:22,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:12:22,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1014923716, now seen corresponding path program 1 times [2023-01-28 03:12:22,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:12:22,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367540991] [2023-01-28 03:12:22,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:22,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:12:22,662 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 03:12:22,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [568318784] [2023-01-28 03:12:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:22,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:22,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:12:22,664 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) [2023-01-28 03:12:22,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 03:12:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:12:22,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-28 03:12:22,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:12:22,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:12:22,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 03:12:22,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:12:22,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367540991] [2023-01-28 03:12:22,779 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 03:12:22,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568318784] [2023-01-28 03:12:22,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568318784] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:12:22,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:12:22,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 03:12:22,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846818823] [2023-01-28 03:12:22,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:12:22,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:12:22,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:12:22,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:12:22,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 03:12:22,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 533 [2023-01-28 03:12:22,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 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) [2023-01-28 03:12:22,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:12:22,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 533 [2023-01-28 03:12:22,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:12:22,905 INFO L130 PetriNetUnfolder]: 528/850 cut-off events. [2023-01-28 03:12:22,905 INFO L131 PetriNetUnfolder]: For 135/171 co-relation queries the response was YES. [2023-01-28 03:12:22,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1954 conditions, 850 events. 528/850 cut-off events. For 135/171 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3736 event pairs, 312 based on Foata normal form. 38/766 useless extension candidates. Maximal degree in co-relation 1272. Up to 285 conditions per place. [2023-01-28 03:12:22,907 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 28 selfloop transitions, 3 changer transitions 46/79 dead transitions. [2023-01-28 03:12:22,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 79 transitions, 403 flow [2023-01-28 03:12:22,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:12:22,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:12:22,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1015 transitions. [2023-01-28 03:12:22,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3808630393996248 [2023-01-28 03:12:22,910 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1015 transitions. [2023-01-28 03:12:22,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1015 transitions. [2023-01-28 03:12:22,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:12:22,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1015 transitions. [2023-01-28 03:12:22,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 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) [2023-01-28 03:12:22,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 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) [2023-01-28 03:12:22,916 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 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) [2023-01-28 03:12:22,916 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 103 flow. Second operand 5 states and 1015 transitions. [2023-01-28 03:12:22,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 79 transitions, 403 flow [2023-01-28 03:12:22,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 79 transitions, 402 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 03:12:22,918 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 125 flow [2023-01-28 03:12:22,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2023-01-28 03:12:22,918 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 12 predicate places. [2023-01-28 03:12:22,918 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 125 flow [2023-01-28 03:12:22,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 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) [2023-01-28 03:12:22,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:12:22,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:12:22,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 03:12:23,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:23,125 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:12:23,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:12:23,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1495140604, now seen corresponding path program 1 times [2023-01-28 03:12:23,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:12:23,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855582059] [2023-01-28 03:12:23,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:23,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:12:23,135 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 03:12:23,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895677513] [2023-01-28 03:12:23,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:23,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:23,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:12:23,136 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) [2023-01-28 03:12:23,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 03:12:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:12:23,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:12:23,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:12:23,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:23,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:12:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:12:23,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:12:23,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855582059] [2023-01-28 03:12:23,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 03:12:23,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895677513] [2023-01-28 03:12:23,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895677513] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 03:12:23,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 03:12:23,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-01-28 03:12:23,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498886362] [2023-01-28 03:12:23,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:12:23,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:12:23,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:12:23,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:12:23,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 03:12:23,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 533 [2023-01-28 03:12:23,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 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) [2023-01-28 03:12:23,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:12:23,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 533 [2023-01-28 03:12:23,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:12:23,530 INFO L130 PetriNetUnfolder]: 212/348 cut-off events. [2023-01-28 03:12:23,530 INFO L131 PetriNetUnfolder]: For 60/68 co-relation queries the response was YES. [2023-01-28 03:12:23,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 812 conditions, 348 events. 212/348 cut-off events. For 60/68 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1057 event pairs, 56 based on Foata normal form. 28/323 useless extension candidates. Maximal degree in co-relation 798. Up to 176 conditions per place. [2023-01-28 03:12:23,532 INFO L137 encePairwiseOnDemand]: 524/533 looper letters, 35 selfloop transitions, 9 changer transitions 0/46 dead transitions. [2023-01-28 03:12:23,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 254 flow [2023-01-28 03:12:23,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:12:23,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:12:23,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 965 transitions. [2023-01-28 03:12:23,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3621013133208255 [2023-01-28 03:12:23,534 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 965 transitions. [2023-01-28 03:12:23,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 965 transitions. [2023-01-28 03:12:23,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:12:23,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 965 transitions. [2023-01-28 03:12:23,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 193.0) internal successors, (965), 5 states have internal predecessors, (965), 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) [2023-01-28 03:12:23,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 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) [2023-01-28 03:12:23,541 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 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) [2023-01-28 03:12:23,541 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 125 flow. Second operand 5 states and 965 transitions. [2023-01-28 03:12:23,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 46 transitions, 254 flow [2023-01-28 03:12:23,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 239 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-28 03:12:23,543 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 178 flow [2023-01-28 03:12:23,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-01-28 03:12:23,544 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 15 predicate places. [2023-01-28 03:12:23,544 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 178 flow [2023-01-28 03:12:23,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 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) [2023-01-28 03:12:23,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:12:23,545 INFO L208 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] [2023-01-28 03:12:23,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 03:12:23,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:23,761 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:12:23,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:12:23,762 INFO L85 PathProgramCache]: Analyzing trace with hash 894191198, now seen corresponding path program 1 times [2023-01-28 03:12:23,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:12:23,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121749619] [2023-01-28 03:12:23,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:23,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:12:23,772 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 03:12:23,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780352422] [2023-01-28 03:12:23,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:23,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:23,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:12:23,774 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) [2023-01-28 03:12:23,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 03:12:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:12:23,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 03:12:23,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:12:24,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 03:12:24,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 03:12:24,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:12:24,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121749619] [2023-01-28 03:12:24,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 03:12:24,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780352422] [2023-01-28 03:12:24,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780352422] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:12:24,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:12:24,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 03:12:24,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013867450] [2023-01-28 03:12:24,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:12:24,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 03:12:24,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:12:24,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 03:12:24,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 03:12:24,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 533 [2023-01-28 03:12:24,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 178.66666666666666) internal successors, (1072), 6 states have internal predecessors, (1072), 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) [2023-01-28 03:12:24,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:12:24,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 533 [2023-01-28 03:12:24,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:12:24,417 INFO L130 PetriNetUnfolder]: 212/350 cut-off events. [2023-01-28 03:12:24,417 INFO L131 PetriNetUnfolder]: For 127/135 co-relation queries the response was YES. [2023-01-28 03:12:24,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 350 events. 212/350 cut-off events. For 127/135 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1056 event pairs, 128 based on Foata normal form. 9/307 useless extension candidates. Maximal degree in co-relation 925. Up to 339 conditions per place. [2023-01-28 03:12:24,419 INFO L137 encePairwiseOnDemand]: 526/533 looper letters, 31 selfloop transitions, 2 changer transitions 7/42 dead transitions. [2023-01-28 03:12:24,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 282 flow [2023-01-28 03:12:24,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 03:12:24,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 03:12:24,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1435 transitions. [2023-01-28 03:12:24,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33653846153846156 [2023-01-28 03:12:24,422 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1435 transitions. [2023-01-28 03:12:24,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1435 transitions. [2023-01-28 03:12:24,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:12:24,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1435 transitions. [2023-01-28 03:12:24,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 179.375) internal successors, (1435), 8 states have internal predecessors, (1435), 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) [2023-01-28 03:12:24,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 533.0) internal successors, (4797), 9 states have internal predecessors, (4797), 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) [2023-01-28 03:12:24,430 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 533.0) internal successors, (4797), 9 states have internal predecessors, (4797), 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) [2023-01-28 03:12:24,431 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 178 flow. Second operand 8 states and 1435 transitions. [2023-01-28 03:12:24,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 282 flow [2023-01-28 03:12:24,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 03:12:24,434 INFO L231 Difference]: Finished difference. Result has 52 places, 35 transitions, 162 flow [2023-01-28 03:12:24,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=162, PETRI_PLACES=52, PETRI_TRANSITIONS=35} [2023-01-28 03:12:24,436 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 24 predicate places. [2023-01-28 03:12:24,436 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 35 transitions, 162 flow [2023-01-28 03:12:24,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 178.66666666666666) internal successors, (1072), 6 states have internal predecessors, (1072), 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) [2023-01-28 03:12:24,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:12:24,438 INFO L208 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] [2023-01-28 03:12:24,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 03:12:24,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:24,643 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:12:24,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:12:24,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1413036971, now seen corresponding path program 1 times [2023-01-28 03:12:24,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:12:24,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192687975] [2023-01-28 03:12:24,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:24,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:12:24,654 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 03:12:24,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808946524] [2023-01-28 03:12:24,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:24,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:24,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:12:24,656 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) [2023-01-28 03:12:24,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 03:12:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:12:24,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 03:12:24,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:12:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 03:12:24,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:12:24,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 03:12:24,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:12:24,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192687975] [2023-01-28 03:12:24,793 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 03:12:24,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808946524] [2023-01-28 03:12:24,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808946524] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 03:12:24,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 03:12:24,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-01-28 03:12:24,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951428446] [2023-01-28 03:12:24,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:12:24,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:12:24,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:12:24,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:12:24,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 03:12:24,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 533 [2023-01-28 03:12:24,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 35 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 198.4) internal successors, (992), 5 states have internal predecessors, (992), 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) [2023-01-28 03:12:24,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:12:24,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 533 [2023-01-28 03:12:24,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:12:24,855 INFO L130 PetriNetUnfolder]: 178/310 cut-off events. [2023-01-28 03:12:24,855 INFO L131 PetriNetUnfolder]: For 137/145 co-relation queries the response was YES. [2023-01-28 03:12:24,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 310 events. 178/310 cut-off events. For 137/145 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 972 event pairs, 104 based on Foata normal form. 9/274 useless extension candidates. Maximal degree in co-relation 818. Up to 286 conditions per place. [2023-01-28 03:12:24,856 INFO L137 encePairwiseOnDemand]: 528/533 looper letters, 29 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-01-28 03:12:24,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 36 transitions, 232 flow [2023-01-28 03:12:24,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:12:24,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:12:24,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 998 transitions. [2023-01-28 03:12:24,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.374484052532833 [2023-01-28 03:12:24,859 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 998 transitions. [2023-01-28 03:12:24,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 998 transitions. [2023-01-28 03:12:24,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:12:24,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 998 transitions. [2023-01-28 03:12:24,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.6) internal successors, (998), 5 states have internal predecessors, (998), 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) [2023-01-28 03:12:24,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 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) [2023-01-28 03:12:24,863 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 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) [2023-01-28 03:12:24,863 INFO L175 Difference]: Start difference. First operand has 52 places, 35 transitions, 162 flow. Second operand 5 states and 998 transitions. [2023-01-28 03:12:24,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 36 transitions, 232 flow [2023-01-28 03:12:24,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 36 transitions, 212 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-01-28 03:12:24,865 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 160 flow [2023-01-28 03:12:24,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2023-01-28 03:12:24,866 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2023-01-28 03:12:24,866 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 160 flow [2023-01-28 03:12:24,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 198.4) internal successors, (992), 5 states have internal predecessors, (992), 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) [2023-01-28 03:12:24,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:12:24,867 INFO L208 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] [2023-01-28 03:12:24,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 03:12:25,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:25,073 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:12:25,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:12:25,073 INFO L85 PathProgramCache]: Analyzing trace with hash 527810065, now seen corresponding path program 1 times [2023-01-28 03:12:25,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:12:25,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450295003] [2023-01-28 03:12:25,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:25,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:12:25,083 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 03:12:25,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700746955] [2023-01-28 03:12:25,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:25,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:25,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:12:25,085 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) [2023-01-28 03:12:25,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 03:12:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:12:25,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:12:25,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:12:25,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 03:12:25,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:12:25,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 03:12:25,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:12:25,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450295003] [2023-01-28 03:12:25,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 03:12:25,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700746955] [2023-01-28 03:12:25,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700746955] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 03:12:25,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 03:12:25,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-01-28 03:12:25,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194829299] [2023-01-28 03:12:25,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:12:25,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:12:25,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:12:25,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:12:25,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 03:12:25,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 533 [2023-01-28 03:12:25,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 193.8) internal successors, (969), 5 states have internal predecessors, (969), 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) [2023-01-28 03:12:25,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:12:25,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 533 [2023-01-28 03:12:25,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:12:25,309 INFO L130 PetriNetUnfolder]: 193/340 cut-off events. [2023-01-28 03:12:25,309 INFO L131 PetriNetUnfolder]: For 262/276 co-relation queries the response was YES. [2023-01-28 03:12:25,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 340 events. 193/340 cut-off events. For 262/276 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1080 event pairs, 78 based on Foata normal form. 14/332 useless extension candidates. Maximal degree in co-relation 912. Up to 197 conditions per place. [2023-01-28 03:12:25,311 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 41 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2023-01-28 03:12:25,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 48 transitions, 309 flow [2023-01-28 03:12:25,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:12:25,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:12:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 982 transitions. [2023-01-28 03:12:25,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36848030018761724 [2023-01-28 03:12:25,313 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 982 transitions. [2023-01-28 03:12:25,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 982 transitions. [2023-01-28 03:12:25,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:12:25,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 982 transitions. [2023-01-28 03:12:25,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 196.4) internal successors, (982), 5 states have internal predecessors, (982), 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) [2023-01-28 03:12:25,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 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) [2023-01-28 03:12:25,318 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 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) [2023-01-28 03:12:25,318 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 160 flow. Second operand 5 states and 982 transitions. [2023-01-28 03:12:25,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 48 transitions, 309 flow [2023-01-28 03:12:25,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 304 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 03:12:25,319 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 178 flow [2023-01-28 03:12:25,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-01-28 03:12:25,320 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 21 predicate places. [2023-01-28 03:12:25,320 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 178 flow [2023-01-28 03:12:25,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 193.8) internal successors, (969), 5 states have internal predecessors, (969), 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) [2023-01-28 03:12:25,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:12:25,320 INFO L208 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] [2023-01-28 03:12:25,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 03:12:25,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:25,527 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:12:25,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:12:25,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1892160258, now seen corresponding path program 1 times [2023-01-28 03:12:25,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:12:25,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727875111] [2023-01-28 03:12:25,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:25,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:12:25,538 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 03:12:25,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375268307] [2023-01-28 03:12:25,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:12:25,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:12:25,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:12:25,540 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) [2023-01-28 03:12:25,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 03:12:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:12:25,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 82 conjunts are in the unsatisfiable core [2023-01-28 03:12:25,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:12:25,792 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-01-28 03:12:25,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 12 treesize of output 27 [2023-01-28 03:12:25,824 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-01-28 03:12:25,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-01-28 03:12:25,868 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-01-28 03:12:25,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-01-28 03:12:25,912 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-01-28 03:12:25,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-01-28 03:12:26,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2023-01-28 03:12:26,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:12:26,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2023-01-28 03:12:26,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:12:26,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2023-01-28 03:12:26,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-01-28 03:12:26,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2023-01-28 03:12:26,580 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-01-28 03:12:26,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 59 [2023-01-28 03:12:26,596 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2023-01-28 03:12:26,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 33 [2023-01-28 03:12:26,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-01-28 03:12:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 03:12:26,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:12:27,184 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:12:27,184 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 322 treesize of output 290 [2023-01-28 03:12:27,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 137 [2023-01-28 03:13:44,561 WARN L222 SmtUtils]: Spent 1.21m on a formula simplification. DAG size of input: 96 DAG size of output: 80 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:14:16,673 WARN L222 SmtUtils]: Spent 25.62s on a formula simplification. DAG size of input: 76 DAG size of output: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:14:38,934 WARN L222 SmtUtils]: Spent 8.07s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:14:46,599 INFO L321 Elim1Store]: treesize reduction 4, result has 97.6 percent of original size [2023-01-28 03:14:46,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1629 treesize of output 1427 [2023-01-28 03:14:56,723 INFO L321 Elim1Store]: treesize reduction 4, result has 97.6 percent of original size [2023-01-28 03:14:56,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1693 treesize of output 1491 [2023-01-28 03:14:59,503 INFO L321 Elim1Store]: treesize reduction 4, result has 97.6 percent of original size [2023-01-28 03:14:59,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1651 treesize of output 1349 [2023-01-28 03:15:05,243 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:15:05,243 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 51 treesize of output 52 [2023-01-28 03:15:05,251 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:15:05,251 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 155 treesize of output 151 [2023-01-28 03:15:05,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 130 [2023-01-28 03:15:05,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 128 [2023-01-28 03:15:05,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 124 [2023-01-28 03:15:05,951 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 03:15:05,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:15:05,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727875111] [2023-01-28 03:15:05,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 03:15:05,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375268307] [2023-01-28 03:15:05,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375268307] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:15:05,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-28 03:15:05,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2023-01-28 03:15:05,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588350900] [2023-01-28 03:15:05,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-28 03:15:05,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-28 03:15:05,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:15:05,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-28 03:15:05,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=970, Unknown=34, NotChecked=0, Total=1122 [2023-01-28 03:15:05,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 533 [2023-01-28 03:15:05,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 178 flow. Second operand has 34 states, 34 states have (on average 128.64705882352942) internal successors, (4374), 34 states have internal predecessors, (4374), 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) [2023-01-28 03:15:05,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:15:05,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 533 [2023-01-28 03:15:05,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:15:30,344 WARN L222 SmtUtils]: Spent 14.62s on a formula simplification. DAG size of input: 138 DAG size of output: 121 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:15:44,050 WARN L222 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 181 DAG size of output: 138 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:15:45,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:15:47,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:16:20,437 WARN L222 SmtUtils]: Spent 18.01s on a formula simplification. DAG size of input: 172 DAG size of output: 127 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:17:21,546 WARN L222 SmtUtils]: Spent 43.01s on a formula simplification. DAG size of input: 215 DAG size of output: 171 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:17:23,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:17:24,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:18:19,558 WARN L222 SmtUtils]: Spent 31.44s on a formula simplification. DAG size of input: 194 DAG size of output: 149 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:18:21,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:19:58,171 WARN L222 SmtUtils]: Spent 1.28m on a formula simplification. DAG size of input: 237 DAG size of output: 175 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:20:00,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:20:02,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:20:04,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:20:06,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:20:08,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:21:35,186 WARN L222 SmtUtils]: Spent 56.95s on a formula simplification. DAG size of input: 204 DAG size of output: 159 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:21:38,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:21:41,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:24:14,425 WARN L222 SmtUtils]: Spent 2.01m on a formula simplification. DAG size of input: 247 DAG size of output: 194 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:24:16,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:24:17,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:24:19,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:24:21,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:24:24,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:25:15,944 WARN L222 SmtUtils]: Spent 7.97s on a formula simplification. DAG size of input: 150 DAG size of output: 115 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:25:19,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:25:22,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:25:24,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:25:26,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:25:28,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:25:30,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:25:33,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:25:35,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:25:37,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:25:38,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:25:40,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:25:42,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:25:44,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 03:26:40,024 WARN L222 SmtUtils]: Spent 18.39s on a formula simplification. DAG size of input: 192 DAG size of output: 158 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-01-28 03:26:40,904 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 03:26:40,904 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 [2023-01-28 03:26:41,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-01-28 03:26:41,317 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 03:26:41,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 03:26:41,521 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,SelfDestructingSolverStorable7 [2023-01-28 03:26:41,521 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (34states, 127/533 universal loopers) in iteration 8,while PetriNetUnfolder was constructing finite prefix that currently has 2757 conditions, 867 events (500/866 cut-off events. For 894/894 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4051 event pairs, 118 based on Foata normal form. 0/922 useless extension candidates. Maximal degree in co-relation 2727. Up to 295 conditions per place.). [2023-01-28 03:26:41,523 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 03:26:41,523 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 03:26:41,523 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:26:41,525 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 03:26:41,525 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 03:26:41,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 03:26:41 BasicIcfg [2023-01-28 03:26:41,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 03:26:41,528 INFO L158 Benchmark]: Toolchain (without parser) took 875624.37ms. Allocated memory was 381.7MB in the beginning and 459.3MB in the end (delta: 77.6MB). Free memory was 351.4MB in the beginning and 333.0MB in the end (delta: 18.4MB). Peak memory consumption was 279.5MB. Max. memory is 16.0GB. [2023-01-28 03:26:41,528 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 03:26:41,528 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.16ms. Allocated memory is still 381.7MB. Free memory was 351.0MB in the beginning and 339.4MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 03:26:41,528 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.98ms. Allocated memory is still 381.7MB. Free memory was 339.4MB in the beginning and 337.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 03:26:41,528 INFO L158 Benchmark]: Boogie Preprocessor took 24.04ms. Allocated memory is still 381.7MB. Free memory was 337.2MB in the beginning and 335.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 03:26:41,528 INFO L158 Benchmark]: RCFGBuilder took 414.45ms. Allocated memory is still 381.7MB. Free memory was 335.2MB in the beginning and 312.5MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-01-28 03:26:41,528 INFO L158 Benchmark]: TraceAbstraction took 874981.68ms. Allocated memory was 381.7MB in the beginning and 459.3MB in the end (delta: 77.6MB). Free memory was 311.7MB in the beginning and 333.0MB in the end (delta: -21.3MB). Peak memory consumption was 239.6MB. Max. memory is 16.0GB. [2023-01-28 03:26:41,529 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 171.16ms. Allocated memory is still 381.7MB. Free memory was 351.0MB in the beginning and 339.4MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.98ms. Allocated memory is still 381.7MB. Free memory was 339.4MB in the beginning and 337.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.04ms. Allocated memory is still 381.7MB. Free memory was 337.2MB in the beginning and 335.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 414.45ms. Allocated memory is still 381.7MB. Free memory was 335.2MB in the beginning and 312.5MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 874981.68ms. Allocated memory was 381.7MB in the beginning and 459.3MB in the end (delta: 77.6MB). Free memory was 311.7MB in the beginning and 333.0MB in the end (delta: -21.3MB). Peak memory consumption was 239.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.8s, 228 PlacesBefore, 28 PlacesAfterwards, 247 TransitionsBefore, 28 TransitionsAfterwards, 972 CoEnabledTransitionPairs, 8 FixpointIterations, 173 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 55 TrivialYvCompositions, 6 ConcurrentYvCompositions, 19 ChoiceCompositions, 276 TotalNumberOfCompositions, 1519 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1157, independent: 1082, independent conditional: 0, independent unconditional: 1082, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 511, independent: 492, independent conditional: 0, independent unconditional: 492, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1157, independent: 590, independent conditional: 0, independent unconditional: 590, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 511, unknown conditional: 0, unknown unconditional: 511] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (34states, 127/533 universal loopers) in iteration 8,while PetriNetUnfolder was constructing finite prefix that currently has 2757 conditions, 867 events (500/866 cut-off events. For 894/894 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4051 event pairs, 118 based on Foata normal form. 0/922 useless extension candidates. Maximal degree in co-relation 2727. Up to 295 conditions per place.). - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (34states, 127/533 universal loopers) in iteration 8,while PetriNetUnfolder was constructing finite prefix that currently has 2757 conditions, 867 events (500/866 cut-off events. For 894/894 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4051 event pairs, 118 based on Foata normal form. 0/922 useless extension candidates. Maximal degree in co-relation 2727. Up to 295 conditions per place.). - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (34states, 127/533 universal loopers) in iteration 8,while PetriNetUnfolder was constructing finite prefix that currently has 2757 conditions, 867 events (500/866 cut-off events. For 894/894 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4051 event pairs, 118 based on Foata normal form. 0/922 useless extension candidates. Maximal degree in co-relation 2727. Up to 295 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 263 locations, 3 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: 874.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 696.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 14.9s, HoareTripleCheckerStatistics: 65 mSolverCounterUnknown, 636 SdHoareTripleChecker+Valid, 70.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 636 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 70.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 55 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1844 IncrementalHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 8 mSDtfsCounter, 1844 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 327 GetRequests, 219 SyntacticMatches, 5 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 767.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=178occurred in iteration=4, InterpolantAutomatonStates: 38, 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: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 160.7s InterpolantComputationTime, 178 NumberOfCodeBlocks, 178 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 283 ConstructedInterpolants, 33 QuantifiedInterpolants, 6309 SizeOfPredicates, 51 NumberOfNonLiveVariables, 2431 ConjunctsInSsa, 126 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 35/50 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