/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_REDUNDANT_FLOW -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-sre-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 12:42:30,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 12:42:30,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 12:42:30,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 12:42:30,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 12:42:30,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 12:42:30,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 12:42:30,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 12:42:30,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 12:42:30,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 12:42:30,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 12:42:30,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 12:42:30,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 12:42:30,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 12:42:30,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 12:42:30,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 12:42:30,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 12:42:30,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 12:42:30,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 12:42:30,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 12:42:30,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 12:42:30,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 12:42:30,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 12:42:30,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 12:42:30,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 12:42:30,150 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 12:42:30,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 12:42:30,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 12:42:30,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 12:42:30,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 12:42:30,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 12:42:30,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 12:42:30,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 12:42:30,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 12:42:30,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 12:42:30,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 12:42:30,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 12:42:30,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 12:42:30,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 12:42:30,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 12:42:30,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 12:42:30,168 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-12 12:42:30,194 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 12:42:30,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 12:42:30,195 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 12:42:30,195 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 12:42:30,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 12:42:30,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 12:42:30,197 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 12:42:30,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 12:42:30,197 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 12:42:30,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 12:42:30,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 12:42:30,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 12:42:30,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 12:42:30,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 12:42:30,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 12:42:30,199 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 12:42:30,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 12:42:30,199 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 12:42:30,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 12:42:30,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 12:42:30,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 12:42:30,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 12:42:30,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 12:42:30,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:42:30,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 12:42:30,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 12:42:30,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 12:42:30,200 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 12:42:30,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 12:42:30,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 12:42:30,201 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 12:42:30,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 12:42:30,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 12:42:30,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 12:42:30,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 12:42:30,510 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 12:42:30,510 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 12:42:30,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-sre-trans.wvr.c [2022-12-12 12:42:31,466 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 12:42:31,662 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 12:42:31,662 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-trans.wvr.c [2022-12-12 12:42:31,669 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ee5ee63b/2ee362fe24904e67b7878861ecef1a99/FLAG834d404b8 [2022-12-12 12:42:31,679 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ee5ee63b/2ee362fe24904e67b7878861ecef1a99 [2022-12-12 12:42:31,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 12:42:31,682 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 12:42:31,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 12:42:31,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 12:42:31,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 12:42:31,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:42:31" (1/1) ... [2022-12-12 12:42:31,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69529808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:42:31, skipping insertion in model container [2022-12-12 12:42:31,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:42:31" (1/1) ... [2022-12-12 12:42:31,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 12:42:31,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 12:42:31,817 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-trans.wvr.c[2272,2285] [2022-12-12 12:42:31,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:42:31,828 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 12:42:31,842 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-trans.wvr.c[2272,2285] [2022-12-12 12:42:31,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:42:31,854 INFO L208 MainTranslator]: Completed translation [2022-12-12 12:42:31,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:42:31 WrapperNode [2022-12-12 12:42:31,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 12:42:31,858 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 12:42:31,858 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 12:42:31,858 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 12:42:31,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:42:31" (1/1) ... [2022-12-12 12:42:31,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:42:31" (1/1) ... [2022-12-12 12:42:31,894 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-12-12 12:42:31,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 12:42:31,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 12:42:31,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 12:42:31,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 12:42:31,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:42:31" (1/1) ... [2022-12-12 12:42:31,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:42:31" (1/1) ... [2022-12-12 12:42:31,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:42:31" (1/1) ... [2022-12-12 12:42:31,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:42:31" (1/1) ... [2022-12-12 12:42:31,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:42:31" (1/1) ... [2022-12-12 12:42:31,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:42:31" (1/1) ... [2022-12-12 12:42:31,926 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:42:31" (1/1) ... [2022-12-12 12:42:31,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:42:31" (1/1) ... [2022-12-12 12:42:31,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 12:42:31,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 12:42:31,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 12:42:31,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 12:42:31,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:42:31" (1/1) ... [2022-12-12 12:42:31,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:42:31,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:42:31,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 12:42:31,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 12:42:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 12:42:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 12:42:31,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 12:42:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 12:42:31,989 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 12:42:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 12:42:31,989 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 12:42:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 12:42:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 12:42:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 12:42:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 12:42:31,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 12:42:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 12:42:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 12:42:31,991 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 12:42:32,076 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 12:42:32,078 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 12:42:32,191 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 12:42:32,196 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 12:42:32,196 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 12:42:32,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:42:32 BoogieIcfgContainer [2022-12-12 12:42:32,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 12:42:32,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 12:42:32,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 12:42:32,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 12:42:32,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 12:42:31" (1/3) ... [2022-12-12 12:42:32,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59dfb239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:42:32, skipping insertion in model container [2022-12-12 12:42:32,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:42:31" (2/3) ... [2022-12-12 12:42:32,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59dfb239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:42:32, skipping insertion in model container [2022-12-12 12:42:32,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:42:32" (3/3) ... [2022-12-12 12:42:32,204 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-sre-trans.wvr.c [2022-12-12 12:42:32,217 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 12:42:32,217 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 12:42:32,217 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 12:42:32,277 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 12:42:32,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 81 transitions, 186 flow [2022-12-12 12:42:32,350 INFO L130 PetriNetUnfolder]: 1/78 cut-off events. [2022-12-12 12:42:32,351 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 12:42:32,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 1/78 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 20 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2022-12-12 12:42:32,356 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 81 transitions, 186 flow [2022-12-12 12:42:32,359 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 154 flow [2022-12-12 12:42:32,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 12:42:32,374 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;@79e26410, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 12:42:32,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 12:42:32,397 INFO L130 PetriNetUnfolder]: 1/67 cut-off events. [2022-12-12 12:42:32,397 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 12:42:32,397 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:42:32,398 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:42:32,398 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 12:42:32,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:42:32,402 INFO L85 PathProgramCache]: Analyzing trace with hash -616440559, now seen corresponding path program 1 times [2022-12-12 12:42:32,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:42:32,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335556801] [2022-12-12 12:42:32,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:42:32,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:42:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:42:33,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:42:33,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:42:33,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335556801] [2022-12-12 12:42:33,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335556801] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:42:33,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:42:33,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:42:33,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418232579] [2022-12-12 12:42:33,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:42:33,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:42:33,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:42:33,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:42:33,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:42:33,420 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-12-12 12:42:33,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 59.142857142857146) internal successors, (414), 7 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:33,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:42:33,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-12-12 12:42:33,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:42:33,868 INFO L130 PetriNetUnfolder]: 15/164 cut-off events. [2022-12-12 12:42:33,868 INFO L131 PetriNetUnfolder]: For 61/69 co-relation queries the response was YES. [2022-12-12 12:42:33,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 164 events. 15/164 cut-off events. For 61/69 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 475 event pairs, 2 based on Foata normal form. 5/165 useless extension candidates. Maximal degree in co-relation 136. Up to 27 conditions per place. [2022-12-12 12:42:33,871 INFO L137 encePairwiseOnDemand]: 68/81 looper letters, 26 selfloop transitions, 7 changer transitions 11/88 dead transitions. [2022-12-12 12:42:33,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 88 transitions, 309 flow [2022-12-12 12:42:33,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 12:42:33,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 12:42:33,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 664 transitions. [2022-12-12 12:42:33,887 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.745230078563412 [2022-12-12 12:42:33,892 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 10 predicate places. [2022-12-12 12:42:33,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 88 transitions, 309 flow [2022-12-12 12:42:33,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 88 transitions, 265 flow, removed 5 selfloop flow, removed 8 redundant places. [2022-12-12 12:42:33,900 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 88 transitions, 265 flow [2022-12-12 12:42:33,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.142857142857146) internal successors, (414), 7 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:33,901 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:42:33,901 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:42:33,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 12:42:33,902 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 12:42:33,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:42:33,903 INFO L85 PathProgramCache]: Analyzing trace with hash 905695613, now seen corresponding path program 2 times [2022-12-12 12:42:33,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:42:33,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586474331] [2022-12-12 12:42:33,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:42:33,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:42:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:42:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:42:34,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:42:34,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586474331] [2022-12-12 12:42:34,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586474331] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:42:34,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:42:34,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:42:34,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270420304] [2022-12-12 12:42:34,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:42:34,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:42:34,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:42:34,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:42:34,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:42:34,349 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 81 [2022-12-12 12:42:34,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 88 transitions, 265 flow. Second operand has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:34,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:42:34,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 81 [2022-12-12 12:42:34,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:42:34,565 INFO L130 PetriNetUnfolder]: 15/166 cut-off events. [2022-12-12 12:42:34,565 INFO L131 PetriNetUnfolder]: For 55/91 co-relation queries the response was YES. [2022-12-12 12:42:34,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 166 events. 15/166 cut-off events. For 55/91 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 486 event pairs, 3 based on Foata normal form. 10/171 useless extension candidates. Maximal degree in co-relation 53. Up to 29 conditions per place. [2022-12-12 12:42:34,567 INFO L137 encePairwiseOnDemand]: 71/81 looper letters, 19 selfloop transitions, 6 changer transitions 23/93 dead transitions. [2022-12-12 12:42:34,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 93 transitions, 384 flow [2022-12-12 12:42:34,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 12:42:34,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 12:42:34,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 553 transitions. [2022-12-12 12:42:34,570 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7585733882030178 [2022-12-12 12:42:34,572 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 10 predicate places. [2022-12-12 12:42:34,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 93 transitions, 384 flow [2022-12-12 12:42:34,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 93 transitions, 338 flow, removed 22 selfloop flow, removed 1 redundant places. [2022-12-12 12:42:34,583 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 93 transitions, 338 flow [2022-12-12 12:42:34,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:34,583 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:42:34,583 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:42:34,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 12:42:34,584 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 12:42:34,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:42:34,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1186149151, now seen corresponding path program 3 times [2022-12-12 12:42:34,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:42:34,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416361214] [2022-12-12 12:42:34,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:42:34,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:42:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:42:34,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:42:34,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:42:34,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416361214] [2022-12-12 12:42:34,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416361214] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:42:34,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:42:34,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:42:34,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094996333] [2022-12-12 12:42:34,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:42:34,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:42:34,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:42:34,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:42:34,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:42:34,917 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-12-12 12:42:34,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 93 transitions, 338 flow. Second operand has 7 states, 7 states have (on average 59.142857142857146) internal successors, (414), 7 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:34,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:42:34,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-12-12 12:42:34,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:42:35,248 INFO L130 PetriNetUnfolder]: 14/197 cut-off events. [2022-12-12 12:42:35,248 INFO L131 PetriNetUnfolder]: For 132/206 co-relation queries the response was YES. [2022-12-12 12:42:35,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 197 events. 14/197 cut-off events. For 132/206 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 757 event pairs, 0 based on Foata normal form. 14/211 useless extension candidates. Maximal degree in co-relation 71. Up to 35 conditions per place. [2022-12-12 12:42:35,249 INFO L137 encePairwiseOnDemand]: 70/81 looper letters, 18 selfloop transitions, 5 changer transitions 42/109 dead transitions. [2022-12-12 12:42:35,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 109 transitions, 555 flow [2022-12-12 12:42:35,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 12:42:35,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 12:42:35,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 659 transitions. [2022-12-12 12:42:35,251 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7396184062850729 [2022-12-12 12:42:35,251 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 19 predicate places. [2022-12-12 12:42:35,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 109 transitions, 555 flow [2022-12-12 12:42:35,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 109 transitions, 515 flow, removed 18 selfloop flow, removed 2 redundant places. [2022-12-12 12:42:35,253 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 109 transitions, 515 flow [2022-12-12 12:42:35,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.142857142857146) internal successors, (414), 7 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:35,254 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:42:35,254 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:42:35,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 12:42:35,254 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 12:42:35,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:42:35,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1766547233, now seen corresponding path program 4 times [2022-12-12 12:42:35,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:42:35,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616482825] [2022-12-12 12:42:35,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:42:35,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:42:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:42:35,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:42:35,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:42:35,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616482825] [2022-12-12 12:42:35,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616482825] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:42:35,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:42:35,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:42:35,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699761036] [2022-12-12 12:42:35,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:42:35,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:42:35,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:42:35,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:42:35,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:42:35,576 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-12-12 12:42:35,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 109 transitions, 515 flow. Second operand has 7 states, 7 states have (on average 59.142857142857146) internal successors, (414), 7 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:35,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:42:35,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-12-12 12:42:35,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:42:35,805 INFO L130 PetriNetUnfolder]: 14/197 cut-off events. [2022-12-12 12:42:35,806 INFO L131 PetriNetUnfolder]: For 235/295 co-relation queries the response was YES. [2022-12-12 12:42:35,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 197 events. 14/197 cut-off events. For 235/295 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 735 event pairs, 0 based on Foata normal form. 14/211 useless extension candidates. Maximal degree in co-relation 66. Up to 34 conditions per place. [2022-12-12 12:42:35,808 INFO L137 encePairwiseOnDemand]: 69/81 looper letters, 0 selfloop transitions, 0 changer transitions 115/115 dead transitions. [2022-12-12 12:42:35,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 115 transitions, 724 flow [2022-12-12 12:42:35,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 12:42:35,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 12:42:35,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 658 transitions. [2022-12-12 12:42:35,810 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7384960718294051 [2022-12-12 12:42:35,811 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 24 predicate places. [2022-12-12 12:42:35,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 115 transitions, 724 flow [2022-12-12 12:42:35,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 115 transitions, 614 flow, removed 49 selfloop flow, removed 3 redundant places. [2022-12-12 12:42:35,814 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 115 transitions, 614 flow [2022-12-12 12:42:35,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.142857142857146) internal successors, (414), 7 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:35,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 12:42:35,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 12:42:35,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 12:42:35,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 12:42:35,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 12:42:35,818 INFO L445 BasicCegarLoop]: Path program histogram: [4] [2022-12-12 12:42:35,821 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 12:42:35,821 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 12:42:35,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 12:42:35 BasicIcfg [2022-12-12 12:42:35,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 12:42:35,828 INFO L158 Benchmark]: Toolchain (without parser) took 4144.46ms. Allocated memory was 186.6MB in the beginning and 320.9MB in the end (delta: 134.2MB). Free memory was 162.8MB in the beginning and 202.6MB in the end (delta: -39.8MB). Peak memory consumption was 95.5MB. Max. memory is 8.0GB. [2022-12-12 12:42:35,828 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 186.6MB. Free memory was 162.7MB in the beginning and 162.6MB in the end (delta: 93.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 12:42:35,830 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.98ms. Allocated memory is still 186.6MB. Free memory was 162.4MB in the beginning and 151.3MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-12 12:42:35,830 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.12ms. Allocated memory is still 186.6MB. Free memory was 151.3MB in the beginning and 149.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 12:42:35,831 INFO L158 Benchmark]: Boogie Preprocessor took 32.82ms. Allocated memory is still 186.6MB. Free memory was 149.8MB in the beginning and 148.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 12:42:35,831 INFO L158 Benchmark]: RCFGBuilder took 269.04ms. Allocated memory is still 186.6MB. Free memory was 148.2MB in the beginning and 135.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 12:42:35,831 INFO L158 Benchmark]: TraceAbstraction took 3626.64ms. Allocated memory was 186.6MB in the beginning and 320.9MB in the end (delta: 134.2MB). Free memory was 134.0MB in the beginning and 202.6MB in the end (delta: -68.6MB). Peak memory consumption was 67.2MB. Max. memory is 8.0GB. [2022-12-12 12:42:35,835 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 186.6MB. Free memory was 162.7MB in the beginning and 162.6MB in the end (delta: 93.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 173.98ms. Allocated memory is still 186.6MB. Free memory was 162.4MB in the beginning and 151.3MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.12ms. Allocated memory is still 186.6MB. Free memory was 151.3MB in the beginning and 149.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.82ms. Allocated memory is still 186.6MB. Free memory was 149.8MB in the beginning and 148.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 269.04ms. Allocated memory is still 186.6MB. Free memory was 148.2MB in the beginning and 135.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3626.64ms. Allocated memory was 186.6MB in the beginning and 320.9MB in the end (delta: 134.2MB). Free memory was 134.0MB in the beginning and 202.6MB in the end (delta: -68.6MB). Peak memory consumption was 67.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 76]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 96 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.5s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 114 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 114 mSDsluCounter, 249 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 179 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 414 IncrementalHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 70 mSDtfsCounter, 414 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=614occurred in iteration=4, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 240 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 260 ConstructedInterpolants, 0 QuantifiedInterpolants, 2545 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 12:42:35,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...