/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-counter-queue.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 01:51:07,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 01:51:07,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 01:51:07,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 01:51:07,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 01:51:07,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 01:51:07,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 01:51:07,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 01:51:07,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 01:51:07,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 01:51:07,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 01:51:07,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 01:51:07,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 01:51:07,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 01:51:07,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 01:51:07,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 01:51:07,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 01:51:07,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 01:51:07,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 01:51:07,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 01:51:07,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 01:51:07,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 01:51:07,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 01:51:07,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 01:51:07,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 01:51:07,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 01:51:07,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 01:51:07,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 01:51:07,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 01:51:07,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 01:51:07,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 01:51:07,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 01:51:07,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 01:51:07,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 01:51:07,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 01:51:07,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 01:51:07,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 01:51:07,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 01:51:07,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 01:51:07,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 01:51:07,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 01:51:07,166 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-RepeatedSemanticLbe.epf [2022-12-13 01:51:07,193 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 01:51:07,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 01:51:07,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 01:51:07,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 01:51:07,195 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 01:51:07,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 01:51:07,196 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 01:51:07,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 01:51:07,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 01:51:07,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 01:51:07,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 01:51:07,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 01:51:07,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 01:51:07,198 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 01:51:07,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 01:51:07,198 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 01:51:07,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 01:51:07,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 01:51:07,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 01:51:07,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 01:51:07,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 01:51:07,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 01:51:07,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 01:51:07,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 01:51:07,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 01:51:07,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 01:51:07,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 01:51:07,200 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 01:51:07,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 01:51:07,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 01:51:07,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 01:51:07,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 01:51:07,519 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 01:51:07,519 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 01:51:07,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-counter-queue.wvr.c [2022-12-13 01:51:08,730 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 01:51:08,904 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 01:51:08,904 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-counter-queue.wvr.c [2022-12-13 01:51:08,909 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc16fd97d/6f3f198196ea46e5a213575fbd2196bf/FLAGf04971a9c [2022-12-13 01:51:08,919 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc16fd97d/6f3f198196ea46e5a213575fbd2196bf [2022-12-13 01:51:08,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 01:51:08,922 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 01:51:08,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 01:51:08,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 01:51:08,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 01:51:08,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:51:08" (1/1) ... [2022-12-13 01:51:08,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10742b38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:51:08, skipping insertion in model container [2022-12-13 01:51:08,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:51:08" (1/1) ... [2022-12-13 01:51:08,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 01:51:08,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 01:51:09,070 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 01:51:09,074 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 01:51:09,074 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 01:51:09,075 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 01:51:09,079 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 01:51:09,081 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 01:51:09,081 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 01:51:09,082 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 01:51:09,096 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2022-12-13 01:51:09,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 01:51:09,128 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 01:51:09,144 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 01:51:09,146 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 01:51:09,146 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 01:51:09,147 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 01:51:09,148 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 01:51:09,150 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 01:51:09,151 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 01:51:09,151 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 01:51:09,163 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2022-12-13 01:51:09,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 01:51:09,188 INFO L208 MainTranslator]: Completed translation [2022-12-13 01:51:09,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:51:09 WrapperNode [2022-12-13 01:51:09,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 01:51:09,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 01:51:09,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 01:51:09,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 01:51:09,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:51:09" (1/1) ... [2022-12-13 01:51:09,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:51:09" (1/1) ... [2022-12-13 01:51:09,243 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 144 [2022-12-13 01:51:09,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 01:51:09,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 01:51:09,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 01:51:09,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 01:51:09,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:51:09" (1/1) ... [2022-12-13 01:51:09,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:51:09" (1/1) ... [2022-12-13 01:51:09,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:51:09" (1/1) ... [2022-12-13 01:51:09,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:51:09" (1/1) ... [2022-12-13 01:51:09,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:51:09" (1/1) ... [2022-12-13 01:51:09,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:51:09" (1/1) ... [2022-12-13 01:51:09,278 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:51:09" (1/1) ... [2022-12-13 01:51:09,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:51:09" (1/1) ... [2022-12-13 01:51:09,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 01:51:09,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 01:51:09,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 01:51:09,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 01:51:09,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:51:09" (1/1) ... [2022-12-13 01:51:09,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 01:51:09,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 01:51:09,323 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) [2022-12-13 01:51:09,343 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 [2022-12-13 01:51:09,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 01:51:09,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 01:51:09,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 01:51:09,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 01:51:09,364 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 01:51:09,364 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 01:51:09,364 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 01:51:09,364 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 01:51:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 01:51:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 01:51:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 01:51:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 01:51:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 01:51:09,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 01:51:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 01:51:09,366 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 01:51:09,514 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 01:51:09,527 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 01:51:09,731 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 01:51:09,841 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 01:51:09,841 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 01:51:09,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:51:09 BoogieIcfgContainer [2022-12-13 01:51:09,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 01:51:09,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 01:51:09,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 01:51:09,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 01:51:09,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:51:08" (1/3) ... [2022-12-13 01:51:09,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22afb783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:51:09, skipping insertion in model container [2022-12-13 01:51:09,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:51:09" (2/3) ... [2022-12-13 01:51:09,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22afb783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:51:09, skipping insertion in model container [2022-12-13 01:51:09,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:51:09" (3/3) ... [2022-12-13 01:51:09,851 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2022-12-13 01:51:09,869 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 01:51:09,870 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 01:51:09,870 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 01:51:09,947 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 01:51:10,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 109 transitions, 234 flow [2022-12-13 01:51:10,100 INFO L130 PetriNetUnfolder]: 9/107 cut-off events. [2022-12-13 01:51:10,100 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 01:51:10,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 107 events. 9/107 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2022-12-13 01:51:10,112 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 109 transitions, 234 flow [2022-12-13 01:51:10,117 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 99 transitions, 210 flow [2022-12-13 01:51:10,119 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 01:51:10,137 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 99 transitions, 210 flow [2022-12-13 01:51:10,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 99 transitions, 210 flow [2022-12-13 01:51:10,179 INFO L130 PetriNetUnfolder]: 9/99 cut-off events. [2022-12-13 01:51:10,180 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 01:51:10,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 99 events. 9/99 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2022-12-13 01:51:10,182 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 99 transitions, 210 flow [2022-12-13 01:51:10,183 INFO L226 LiptonReduction]: Number of co-enabled transitions 572 [2022-12-13 01:51:14,340 INFO L241 LiptonReduction]: Total number of compositions: 80 [2022-12-13 01:51:14,355 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 01:51:14,364 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=REPEATED_LIPTON_PN, 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;@6519ebf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 01:51:14,365 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-13 01:51:14,369 INFO L130 PetriNetUnfolder]: 3/18 cut-off events. [2022-12-13 01:51:14,370 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 01:51:14,370 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 01:51:14,370 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 01:51:14,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 01:51:14,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 01:51:14,375 INFO L85 PathProgramCache]: Analyzing trace with hash 2063872509, now seen corresponding path program 1 times [2022-12-13 01:51:14,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 01:51:14,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882990544] [2022-12-13 01:51:14,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 01:51:14,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 01:51:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 01:51:14,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 01:51:14,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 01:51:14,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882990544] [2022-12-13 01:51:14,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882990544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 01:51:14,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 01:51:14,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 01:51:14,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698889565] [2022-12-13 01:51:14,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 01:51:14,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 01:51:14,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 01:51:14,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 01:51:14,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 01:51:14,822 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 19 [2022-12-13 01:51:14,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-12-13 01:51:14,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 01:51:14,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 19 [2022-12-13 01:51:14,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 01:51:14,927 INFO L130 PetriNetUnfolder]: 114/197 cut-off events. [2022-12-13 01:51:14,927 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-12-13 01:51:14,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 197 events. 114/197 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 723 event pairs, 24 based on Foata normal form. 1/144 useless extension candidates. Maximal degree in co-relation 328. Up to 136 conditions per place. [2022-12-13 01:51:14,931 INFO L137 encePairwiseOnDemand]: 15/19 looper letters, 25 selfloop transitions, 3 changer transitions 1/31 dead transitions. [2022-12-13 01:51:14,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 31 transitions, 141 flow [2022-12-13 01:51:14,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 01:51:14,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 01:51:14,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 36 transitions. [2022-12-13 01:51:14,944 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2022-12-13 01:51:14,945 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 50 flow. Second operand 3 states and 36 transitions. [2022-12-13 01:51:14,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 31 transitions, 141 flow [2022-12-13 01:51:14,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 31 transitions, 127 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 01:51:14,953 INFO L231 Difference]: Finished difference. Result has 22 places, 21 transitions, 61 flow [2022-12-13 01:51:14,955 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=22, PETRI_TRANSITIONS=21} [2022-12-13 01:51:14,959 INFO L295 CegarLoopForPetriNet]: 23 programPoint places, -1 predicate places. [2022-12-13 01:51:14,959 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 01:51:14,960 INFO L89 Accepts]: Start accepts. Operand has 22 places, 21 transitions, 61 flow [2022-12-13 01:51:14,962 INFO L95 Accepts]: Finished accepts. [2022-12-13 01:51:14,963 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 01:51:14,963 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 21 transitions, 61 flow [2022-12-13 01:51:14,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 21 transitions, 61 flow [2022-12-13 01:51:14,972 INFO L130 PetriNetUnfolder]: 8/36 cut-off events. [2022-12-13 01:51:14,972 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 01:51:14,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 8/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 30. Up to 10 conditions per place. [2022-12-13 01:51:14,975 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 21 transitions, 61 flow [2022-12-13 01:51:14,975 INFO L226 LiptonReduction]: Number of co-enabled transitions 102 [2022-12-13 01:51:14,988 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 01:51:14,991 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 32 [2022-12-13 01:51:14,991 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 21 transitions, 61 flow [2022-12-13 01:51:14,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-12-13 01:51:14,994 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 01:51:14,999 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 01:51:14,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 01:51:14,999 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 01:51:15,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 01:51:15,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1182956833, now seen corresponding path program 1 times [2022-12-13 01:51:15,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 01:51:15,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707529506] [2022-12-13 01:51:15,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 01:51:15,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 01:51:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 01:51:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 01:51:15,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 01:51:15,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707529506] [2022-12-13 01:51:15,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707529506] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 01:51:15,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 01:51:15,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 01:51:15,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814510095] [2022-12-13 01:51:15,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 01:51:15,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 01:51:15,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 01:51:15,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 01:51:15,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 01:51:15,156 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 19 [2022-12-13 01:51:15,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 21 transitions, 61 flow. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2022-12-13 01:51:15,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 01:51:15,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 19 [2022-12-13 01:51:15,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 01:51:15,277 INFO L130 PetriNetUnfolder]: 178/329 cut-off events. [2022-12-13 01:51:15,277 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-12-13 01:51:15,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 329 events. 178/329 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1381 event pairs, 83 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 276. Up to 207 conditions per place. [2022-12-13 01:51:15,284 INFO L137 encePairwiseOnDemand]: 14/19 looper letters, 39 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2022-12-13 01:51:15,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 44 transitions, 210 flow [2022-12-13 01:51:15,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 01:51:15,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 01:51:15,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2022-12-13 01:51:15,288 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2022-12-13 01:51:15,288 INFO L175 Difference]: Start difference. First operand has 22 places, 21 transitions, 61 flow. Second operand 5 states and 45 transitions. [2022-12-13 01:51:15,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 44 transitions, 210 flow [2022-12-13 01:51:15,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 44 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 01:51:15,290 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 86 flow [2022-12-13 01:51:15,291 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2022-12-13 01:51:15,291 INFO L295 CegarLoopForPetriNet]: 23 programPoint places, 5 predicate places. [2022-12-13 01:51:15,291 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 01:51:15,291 INFO L89 Accepts]: Start accepts. Operand has 28 places, 24 transitions, 86 flow [2022-12-13 01:51:15,293 INFO L95 Accepts]: Finished accepts. [2022-12-13 01:51:15,293 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 01:51:15,293 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 24 transitions, 86 flow [2022-12-13 01:51:15,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 86 flow [2022-12-13 01:51:15,300 INFO L130 PetriNetUnfolder]: 9/56 cut-off events. [2022-12-13 01:51:15,300 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 01:51:15,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 56 events. 9/56 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 162 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 51. Up to 13 conditions per place. [2022-12-13 01:51:15,301 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 24 transitions, 86 flow [2022-12-13 01:51:15,301 INFO L226 LiptonReduction]: Number of co-enabled transitions 118 [2022-12-13 01:51:16,896 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 01:51:16,897 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1606 [2022-12-13 01:51:16,898 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 92 flow [2022-12-13 01:51:16,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2022-12-13 01:51:16,898 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 01:51:16,899 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 01:51:16,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 01:51:16,899 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 01:51:16,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 01:51:16,900 INFO L85 PathProgramCache]: Analyzing trace with hash -470144639, now seen corresponding path program 1 times [2022-12-13 01:51:16,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 01:51:16,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594452996] [2022-12-13 01:51:16,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 01:51:16,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 01:51:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 01:51:16,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 01:51:16,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 01:51:16,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594452996] [2022-12-13 01:51:16,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594452996] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 01:51:16,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 01:51:16,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 01:51:16,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243807029] [2022-12-13 01:51:16,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 01:51:16,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 01:51:16,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 01:51:16,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 01:51:16,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 01:51:16,969 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 21 [2022-12-13 01:51:16,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-12-13 01:51:16,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 01:51:16,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 21 [2022-12-13 01:51:16,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 01:51:17,040 INFO L130 PetriNetUnfolder]: 132/246 cut-off events. [2022-12-13 01:51:17,040 INFO L131 PetriNetUnfolder]: For 45/52 co-relation queries the response was YES. [2022-12-13 01:51:17,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 246 events. 132/246 cut-off events. For 45/52 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 954 event pairs, 81 based on Foata normal form. 7/231 useless extension candidates. Maximal degree in co-relation 482. Up to 206 conditions per place. [2022-12-13 01:51:17,042 INFO L137 encePairwiseOnDemand]: 18/21 looper letters, 20 selfloop transitions, 0 changer transitions 17/38 dead transitions. [2022-12-13 01:51:17,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 197 flow [2022-12-13 01:51:17,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 01:51:17,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 01:51:17,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 39 transitions. [2022-12-13 01:51:17,044 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2022-12-13 01:51:17,044 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 92 flow. Second operand 4 states and 39 transitions. [2022-12-13 01:51:17,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 197 flow [2022-12-13 01:51:17,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 38 transitions, 189 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 01:51:17,045 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 70 flow [2022-12-13 01:51:17,046 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2022-12-13 01:51:17,046 INFO L295 CegarLoopForPetriNet]: 23 programPoint places, 9 predicate places. [2022-12-13 01:51:17,046 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 01:51:17,046 INFO L89 Accepts]: Start accepts. Operand has 32 places, 21 transitions, 70 flow [2022-12-13 01:51:17,047 INFO L95 Accepts]: Finished accepts. [2022-12-13 01:51:17,047 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 01:51:17,048 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 21 transitions, 70 flow [2022-12-13 01:51:17,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 21 transitions, 70 flow [2022-12-13 01:51:17,052 INFO L130 PetriNetUnfolder]: 8/36 cut-off events. [2022-12-13 01:51:17,052 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 01:51:17,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 36 events. 8/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 51. Up to 10 conditions per place. [2022-12-13 01:51:17,053 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 21 transitions, 70 flow [2022-12-13 01:51:17,053 INFO L226 LiptonReduction]: Number of co-enabled transitions 102 [2022-12-13 01:51:17,054 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 01:51:17,055 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 9 [2022-12-13 01:51:17,055 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 70 flow [2022-12-13 01:51:17,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-12-13 01:51:17,055 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 01:51:17,055 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 01:51:17,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 01:51:17,055 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 01:51:17,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 01:51:17,056 INFO L85 PathProgramCache]: Analyzing trace with hash 433099917, now seen corresponding path program 1 times [2022-12-13 01:51:17,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 01:51:17,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343854198] [2022-12-13 01:51:17,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 01:51:17,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 01:51:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 01:51:17,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 01:51:17,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 01:51:17,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343854198] [2022-12-13 01:51:17,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343854198] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 01:51:17,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 01:51:17,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 01:51:17,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92758221] [2022-12-13 01:51:17,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 01:51:17,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 01:51:17,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 01:51:17,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 01:51:17,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 01:51:17,118 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 19 [2022-12-13 01:51:17,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:51:17,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 01:51:17,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 19 [2022-12-13 01:51:17,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 01:51:17,177 INFO L130 PetriNetUnfolder]: 128/223 cut-off events. [2022-12-13 01:51:17,177 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-12-13 01:51:17,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 223 events. 128/223 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 760 event pairs, 45 based on Foata normal form. 16/236 useless extension candidates. Maximal degree in co-relation 566. Up to 146 conditions per place. [2022-12-13 01:51:17,179 INFO L137 encePairwiseOnDemand]: 15/19 looper letters, 25 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2022-12-13 01:51:17,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 157 flow [2022-12-13 01:51:17,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 01:51:17,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 01:51:17,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 31 transitions. [2022-12-13 01:51:17,181 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.40789473684210525 [2022-12-13 01:51:17,181 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 70 flow. Second operand 4 states and 31 transitions. [2022-12-13 01:51:17,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 157 flow [2022-12-13 01:51:17,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 30 transitions, 139 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-12-13 01:51:17,183 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 75 flow [2022-12-13 01:51:17,183 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=75, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2022-12-13 01:51:17,185 INFO L295 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2022-12-13 01:51:17,185 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 01:51:17,185 INFO L89 Accepts]: Start accepts. Operand has 25 places, 22 transitions, 75 flow [2022-12-13 01:51:17,186 INFO L95 Accepts]: Finished accepts. [2022-12-13 01:51:17,186 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 01:51:17,186 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 22 transitions, 75 flow [2022-12-13 01:51:17,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 22 transitions, 75 flow [2022-12-13 01:51:17,189 INFO L130 PetriNetUnfolder]: 7/33 cut-off events. [2022-12-13 01:51:17,189 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 01:51:17,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 33 events. 7/33 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 64 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 36. Up to 9 conditions per place. [2022-12-13 01:51:17,191 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 22 transitions, 75 flow [2022-12-13 01:51:17,191 INFO L226 LiptonReduction]: Number of co-enabled transitions 110 [2022-12-13 01:51:17,199 ERROR L806 SequenceRule]: Run adaptation not supported for post-scripts [2022-12-13 01:51:17,201 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 01:51:17,210 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 25 [2022-12-13 01:51:17,210 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 61 flow [2022-12-13 01:51:17,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:51:17,211 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 01:51:17,211 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 01:51:17,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 01:51:17,211 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 01:51:17,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 01:51:17,212 INFO L85 PathProgramCache]: Analyzing trace with hash -259439573, now seen corresponding path program 1 times [2022-12-13 01:51:17,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 01:51:17,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291539281] [2022-12-13 01:51:17,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 01:51:17,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 01:51:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 01:51:17,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 01:51:17,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 01:51:17,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291539281] [2022-12-13 01:51:17,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291539281] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 01:51:17,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 01:51:17,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 01:51:17,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220448490] [2022-12-13 01:51:17,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 01:51:17,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 01:51:17,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 01:51:17,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 01:51:17,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 01:51:17,295 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 19 [2022-12-13 01:51:17,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 61 flow. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:51:17,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 01:51:17,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 19 [2022-12-13 01:51:17,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 01:51:17,342 INFO L130 PetriNetUnfolder]: 40/84 cut-off events. [2022-12-13 01:51:17,342 INFO L131 PetriNetUnfolder]: For 2/11 co-relation queries the response was YES. [2022-12-13 01:51:17,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 84 events. 40/84 cut-off events. For 2/11 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 251 event pairs, 21 based on Foata normal form. 9/84 useless extension candidates. Maximal degree in co-relation 113. Up to 58 conditions per place. [2022-12-13 01:51:17,343 INFO L137 encePairwiseOnDemand]: 15/19 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2022-12-13 01:51:17,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 21 transitions, 97 flow [2022-12-13 01:51:17,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 01:51:17,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 01:51:17,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2022-12-13 01:51:17,344 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.32894736842105265 [2022-12-13 01:51:17,344 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 61 flow. Second operand 4 states and 25 transitions. [2022-12-13 01:51:17,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 21 transitions, 97 flow [2022-12-13 01:51:17,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 21 transitions, 93 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 01:51:17,345 INFO L231 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2022-12-13 01:51:17,345 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2022-12-13 01:51:17,345 INFO L295 CegarLoopForPetriNet]: 23 programPoint places, -1 predicate places. [2022-12-13 01:51:17,345 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 01:51:17,346 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 0 transitions, 0 flow [2022-12-13 01:51:17,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2022-12-13 01:51:17,346 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 01:51:17,346 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 01:51:17,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2022-12-13 01:51:17,346 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 0 places, 0 transitions, 0 flow [2022-12-13 01:51:17,346 INFO L226 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-13 01:51:17,347 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 01:51:17,347 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2 [2022-12-13 01:51:17,347 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-13 01:51:17,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:51:17,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-13 01:51:17,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-13 01:51:17,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-13 01:51:17,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 01:51:17,350 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-13 01:51:17,353 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 01:51:17,353 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 01:51:17,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:51:17 BasicIcfg [2022-12-13 01:51:17,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 01:51:17,356 INFO L158 Benchmark]: Toolchain (without parser) took 8434.26ms. Allocated memory was 176.2MB in the beginning and 231.7MB in the end (delta: 55.6MB). Free memory was 135.2MB in the beginning and 200.0MB in the end (delta: -64.8MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-13 01:51:17,356 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 176.2MB. Free memory is still 152.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-13 01:51:17,356 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.70ms. Allocated memory is still 176.2MB. Free memory was 135.2MB in the beginning and 122.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-13 01:51:17,356 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.49ms. Allocated memory is still 176.2MB. Free memory was 122.6MB in the beginning and 120.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-13 01:51:17,356 INFO L158 Benchmark]: Boogie Preprocessor took 36.11ms. Allocated memory is still 176.2MB. Free memory was 120.5MB in the beginning and 119.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-13 01:51:17,357 INFO L158 Benchmark]: RCFGBuilder took 561.83ms. Allocated memory is still 176.2MB. Free memory was 119.0MB in the beginning and 93.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2022-12-13 01:51:17,357 INFO L158 Benchmark]: TraceAbstraction took 7509.60ms. Allocated memory was 176.2MB in the beginning and 231.7MB in the end (delta: 55.6MB). Free memory was 92.7MB in the beginning and 200.0MB in the end (delta: -107.2MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-13 01:51:17,358 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 176.2MB. Free memory is still 152.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 262.70ms. Allocated memory is still 176.2MB. Free memory was 135.2MB in the beginning and 122.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 53.49ms. Allocated memory is still 176.2MB. Free memory was 122.6MB in the beginning and 120.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.11ms. Allocated memory is still 176.2MB. Free memory was 120.5MB in the beginning and 119.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 561.83ms. Allocated memory is still 176.2MB. Free memory was 119.0MB in the beginning and 93.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 7509.60ms. Allocated memory was 176.2MB in the beginning and 231.7MB in the end (delta: 55.6MB). Free memory was 92.7MB in the beginning and 200.0MB in the end (delta: -107.2MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 97 PlacesBefore, 23 PlacesAfterwards, 99 TransitionsBefore, 19 TransitionsAfterwards, 572 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 55 TrivialYvCompositions, 19 ConcurrentYvCompositions, 6 ChoiceCompositions, 80 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 340, independent: 324, independent conditional: 324, independent unconditional: 0, dependent: 16, dependent conditional: 16, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 340, independent: 324, independent conditional: 0, independent unconditional: 324, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 340, independent: 324, independent conditional: 0, independent unconditional: 324, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 340, independent: 324, independent conditional: 0, independent unconditional: 324, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 317, independent: 306, independent conditional: 0, independent unconditional: 306, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 317, independent: 306, independent conditional: 0, independent unconditional: 306, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 11, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 51, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 340, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 317, unknown conditional: 0, unknown unconditional: 317] , Statistics on independence cache: Total cache size (in pairs): 499, Positive cache size: 488, Positive conditional cache size: 0, Positive unconditional cache size: 488, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 22 PlacesBefore, 22 PlacesAfterwards, 21 TransitionsBefore, 21 TransitionsAfterwards, 102 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, independent: 5, independent conditional: 5, independent unconditional: 0, dependent: 2, dependent conditional: 2, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 7, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 2, dependent conditional: 1, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 7, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 2, dependent conditional: 1, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 7, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 2, dependent conditional: 1, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 2, dependent conditional: 1, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 1, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 10, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 10, dependent conditional: 7, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 7, unknown conditional: 1, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 2, Negative conditional cache size: 1, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 28 PlacesBefore, 28 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 118 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 1, dependent conditional: 1, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 1, dependent conditional: 1, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 7, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 7, dependent conditional: 7, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 3, dependent conditional: 3, dependent unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 3, Negative conditional cache size: 2, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 26 PlacesBefore, 26 PlacesAfterwards, 21 TransitionsBefore, 21 TransitionsAfterwards, 102 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, independent: 6, independent conditional: 6, independent unconditional: 0, dependent: 2, dependent conditional: 2, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 8, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 2, dependent conditional: 1, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 8, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 2, dependent conditional: 1, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 8, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 2, dependent conditional: 1, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 2, dependent conditional: 1, dependent unconditional: 1, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 9, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 3, Negative conditional cache size: 2, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 25 PlacesBefore, 25 PlacesAfterwards, 22 TransitionsBefore, 20 TransitionsAfterwards, 110 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 32, independent: 28, independent conditional: 28, independent unconditional: 0, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 32, independent: 28, independent conditional: 16, independent unconditional: 12, dependent: 4, dependent conditional: 3, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 32, independent: 28, independent conditional: 4, independent unconditional: 24, dependent: 4, dependent conditional: 3, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 32, independent: 28, independent conditional: 4, independent unconditional: 24, dependent: 4, dependent conditional: 3, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 9, independent: 8, independent conditional: 2, independent unconditional: 6, dependent: 1, dependent conditional: 1, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 9, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 1, dependent conditional: 1, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 3, dependent conditional: 3, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 32, independent: 20, independent conditional: 2, independent unconditional: 18, dependent: 3, dependent conditional: 2, dependent unconditional: 1, unknown: 9, unknown conditional: 3, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 14, Positive conditional cache size: 2, Positive unconditional cache size: 12, Negative cache size: 4, Negative conditional cache size: 3, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 12, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 0 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 14, Positive conditional cache size: 2, Positive unconditional cache size: 12, Negative cache size: 4, Negative conditional cache size: 3, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 87]: 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 5 procedures, 123 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: 7.4s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 86 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 86 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 225 IncrementalHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 4 mSDtfsCounter, 225 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=2, InterpolantAutomatonStates: 20, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 174 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 4/4 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! [2022-12-13 01:51:17,375 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...