/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 07:32:24,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 07:32:24,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 07:32:24,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 07:32:24,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 07:32:24,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 07:32:24,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 07:32:24,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 07:32:24,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 07:32:24,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 07:32:24,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 07:32:24,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 07:32:24,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 07:32:24,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 07:32:24,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 07:32:24,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 07:32:24,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 07:32:24,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 07:32:24,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 07:32:24,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 07:32:24,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 07:32:24,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 07:32:24,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 07:32:24,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 07:32:24,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 07:32:24,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 07:32:24,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 07:32:24,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 07:32:24,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 07:32:24,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 07:32:24,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 07:32:24,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 07:32:24,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 07:32:24,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 07:32:24,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 07:32:24,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 07:32:24,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 07:32:24,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 07:32:24,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 07:32:24,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 07:32:24,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 07:32:24,560 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-Before.epf [2022-01-19 07:32:24,576 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 07:32:24,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 07:32:24,577 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 07:32:24,577 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 07:32:24,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 07:32:24,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 07:32:24,578 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 07:32:24,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 07:32:24,578 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 07:32:24,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 07:32:24,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 07:32:24,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 07:32:24,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 07:32:24,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 07:32:24,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 07:32:24,580 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 07:32:24,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 07:32:24,580 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 07:32:24,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 07:32:24,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 07:32:24,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 07:32:24,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 07:32:24,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 07:32:24,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 07:32:24,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 07:32:24,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 07:32:24,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 07:32:24,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 07:32:24,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 07:32:24,582 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 07:32:24,582 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 07:32:24,582 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 07:32:24,582 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 07:32:24,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 07:32:24,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 07:32:24,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 07:32:24,802 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 07:32:24,803 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 07:32:24,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c [2022-01-19 07:32:24,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e228c0bc/c8466101d39543b8a25bafb6db0da7ba/FLAGf9112a33e [2022-01-19 07:32:25,235 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 07:32:25,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c [2022-01-19 07:32:25,241 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e228c0bc/c8466101d39543b8a25bafb6db0da7ba/FLAGf9112a33e [2022-01-19 07:32:25,643 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e228c0bc/c8466101d39543b8a25bafb6db0da7ba [2022-01-19 07:32:25,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 07:32:25,646 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 07:32:25,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 07:32:25,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 07:32:25,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 07:32:25,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 07:32:25" (1/1) ... [2022-01-19 07:32:25,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@519d6724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:25, skipping insertion in model container [2022-01-19 07:32:25,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 07:32:25" (1/1) ... [2022-01-19 07:32:25,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 07:32:25,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 07:32:25,830 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c[3134,3147] [2022-01-19 07:32:25,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 07:32:25,839 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 07:32:25,858 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c[3134,3147] [2022-01-19 07:32:25,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 07:32:25,873 INFO L208 MainTranslator]: Completed translation [2022-01-19 07:32:25,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:25 WrapperNode [2022-01-19 07:32:25,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 07:32:25,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 07:32:25,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 07:32:25,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 07:32:25,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:25" (1/1) ... [2022-01-19 07:32:25,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:25" (1/1) ... [2022-01-19 07:32:25,925 INFO L137 Inliner]: procedures = 21, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 119 [2022-01-19 07:32:25,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 07:32:25,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 07:32:25,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 07:32:25,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 07:32:25,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:25" (1/1) ... [2022-01-19 07:32:25,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:25" (1/1) ... [2022-01-19 07:32:25,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:25" (1/1) ... [2022-01-19 07:32:25,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:25" (1/1) ... [2022-01-19 07:32:25,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:25" (1/1) ... [2022-01-19 07:32:25,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:25" (1/1) ... [2022-01-19 07:32:25,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:25" (1/1) ... [2022-01-19 07:32:25,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 07:32:25,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 07:32:25,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 07:32:25,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 07:32:25,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:25" (1/1) ... [2022-01-19 07:32:25,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 07:32:25,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:32:26,000 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) [2022-01-19 07:32:26,015 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 [2022-01-19 07:32:26,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 07:32:26,043 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 07:32:26,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 07:32:26,043 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 07:32:26,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 07:32:26,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 07:32:26,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 07:32:26,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 07:32:26,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 07:32:26,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 07:32:26,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 07:32:26,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 07:32:26,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 07:32:26,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 07:32:26,047 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 07:32:26,129 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 07:32:26,130 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 07:32:26,307 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 07:32:26,361 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 07:32:26,362 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 07:32:26,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 07:32:26 BoogieIcfgContainer [2022-01-19 07:32:26,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 07:32:26,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 07:32:26,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 07:32:26,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 07:32:26,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 07:32:25" (1/3) ... [2022-01-19 07:32:26,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772e8382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 07:32:26, skipping insertion in model container [2022-01-19 07:32:26,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:25" (2/3) ... [2022-01-19 07:32:26,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772e8382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 07:32:26, skipping insertion in model container [2022-01-19 07:32:26,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 07:32:26" (3/3) ... [2022-01-19 07:32:26,371 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-bluetooth.wvr.c [2022-01-19 07:32:26,375 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 07:32:26,375 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 07:32:26,375 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 07:32:26,422 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,423 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,424 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,424 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,425 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,427 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,427 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,435 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,436 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,436 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,436 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,436 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,437 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,437 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,438 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,438 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,438 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,438 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,439 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,439 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,439 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,439 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,440 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,440 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,440 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,441 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,441 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,441 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,442 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,442 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,442 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,442 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,445 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,445 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,445 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,446 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,446 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,447 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,447 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,447 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,447 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,447 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,448 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,448 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:26,456 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 07:32:26,499 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 07:32:26,505 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 07:32:26,505 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 07:32:26,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 137 places, 139 transitions, 294 flow [2022-01-19 07:32:26,612 INFO L129 PetriNetUnfolder]: 9/137 cut-off events. [2022-01-19 07:32:26,612 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 07:32:26,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 137 events. 9/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-01-19 07:32:26,615 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 139 transitions, 294 flow [2022-01-19 07:32:26,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 128 transitions, 268 flow [2022-01-19 07:32:26,668 INFO L129 PetriNetUnfolder]: 9/127 cut-off events. [2022-01-19 07:32:26,668 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 07:32:26,669 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:32:26,670 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:32:26,671 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:32:26,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:32:26,677 INFO L85 PathProgramCache]: Analyzing trace with hash -832133839, now seen corresponding path program 1 times [2022-01-19 07:32:26,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:32:26,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383034404] [2022-01-19 07:32:26,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:32:26,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:32:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:32:27,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:32:27,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:32:27,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383034404] [2022-01-19 07:32:27,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383034404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:32:27,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:32:27,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:32:27,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412666914] [2022-01-19 07:32:27,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:32:27,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:32:27,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:32:27,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:32:27,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:32:27,259 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 139 [2022-01-19 07:32:27,266 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 128 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 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) [2022-01-19 07:32:27,266 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:32:27,266 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 139 [2022-01-19 07:32:27,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:32:27,434 INFO L129 PetriNetUnfolder]: 26/216 cut-off events. [2022-01-19 07:32:27,435 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-01-19 07:32:27,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 216 events. 26/216 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 510 event pairs, 8 based on Foata normal form. 11/208 useless extension candidates. Maximal degree in co-relation 167. Up to 54 conditions per place. [2022-01-19 07:32:27,437 INFO L132 encePairwiseOnDemand]: 120/139 looper letters, 42 selfloop transitions, 7 changer transitions 7/129 dead transitions. [2022-01-19 07:32:27,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 129 transitions, 388 flow [2022-01-19 07:32:27,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 07:32:27,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 07:32:27,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 562 transitions. [2022-01-19 07:32:27,451 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6738609112709832 [2022-01-19 07:32:27,451 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 562 transitions. [2022-01-19 07:32:27,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 562 transitions. [2022-01-19 07:32:27,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:32:27,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 562 transitions. [2022-01-19 07:32:27,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 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) [2022-01-19 07:32:27,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 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) [2022-01-19 07:32:27,467 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 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) [2022-01-19 07:32:27,468 INFO L186 Difference]: Start difference. First operand has 126 places, 128 transitions, 268 flow. Second operand 6 states and 562 transitions. [2022-01-19 07:32:27,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 129 transitions, 388 flow [2022-01-19 07:32:27,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 129 transitions, 376 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 07:32:27,476 INFO L242 Difference]: Finished difference. Result has 128 places, 116 transitions, 261 flow [2022-01-19 07:32:27,477 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=261, PETRI_PLACES=128, PETRI_TRANSITIONS=116} [2022-01-19 07:32:27,480 INFO L334 CegarLoopForPetriNet]: 126 programPoint places, 2 predicate places. [2022-01-19 07:32:27,480 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 116 transitions, 261 flow [2022-01-19 07:32:27,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 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) [2022-01-19 07:32:27,481 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:32:27,481 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:32:27,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 07:32:27,481 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:32:27,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:32:27,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1917017462, now seen corresponding path program 1 times [2022-01-19 07:32:27,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:32:27,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345514035] [2022-01-19 07:32:27,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:32:27,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:32:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:32:27,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:32:27,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:32:27,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345514035] [2022-01-19 07:32:27,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345514035] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:32:27,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:32:27,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 07:32:27,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030932580] [2022-01-19 07:32:27,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:32:27,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 07:32:27,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:32:27,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 07:32:27,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-19 07:32:27,658 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 139 [2022-01-19 07:32:27,659 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 116 transitions, 261 flow. Second operand has 11 states, 11 states have (on average 82.0909090909091) internal successors, (903), 11 states have internal predecessors, (903), 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) [2022-01-19 07:32:27,659 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:32:27,659 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 139 [2022-01-19 07:32:27,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:32:27,898 INFO L129 PetriNetUnfolder]: 57/334 cut-off events. [2022-01-19 07:32:27,899 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-01-19 07:32:27,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 334 events. 57/334 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1307 event pairs, 29 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 270. Up to 87 conditions per place. [2022-01-19 07:32:27,904 INFO L132 encePairwiseOnDemand]: 127/139 looper letters, 61 selfloop transitions, 17 changer transitions 0/148 dead transitions. [2022-01-19 07:32:27,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 148 transitions, 489 flow [2022-01-19 07:32:27,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 07:32:27,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 07:32:27,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1016 transitions. [2022-01-19 07:32:27,909 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6091127098321343 [2022-01-19 07:32:27,909 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1016 transitions. [2022-01-19 07:32:27,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1016 transitions. [2022-01-19 07:32:27,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:32:27,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1016 transitions. [2022-01-19 07:32:27,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 84.66666666666667) internal successors, (1016), 12 states have internal predecessors, (1016), 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) [2022-01-19 07:32:27,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 139.0) internal successors, (1807), 13 states have internal predecessors, (1807), 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) [2022-01-19 07:32:27,920 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 139.0) internal successors, (1807), 13 states have internal predecessors, (1807), 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) [2022-01-19 07:32:27,920 INFO L186 Difference]: Start difference. First operand has 128 places, 116 transitions, 261 flow. Second operand 12 states and 1016 transitions. [2022-01-19 07:32:27,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 148 transitions, 489 flow [2022-01-19 07:32:27,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 148 transitions, 480 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 07:32:27,926 INFO L242 Difference]: Finished difference. Result has 131 places, 128 transitions, 333 flow [2022-01-19 07:32:27,926 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=333, PETRI_PLACES=131, PETRI_TRANSITIONS=128} [2022-01-19 07:32:27,927 INFO L334 CegarLoopForPetriNet]: 126 programPoint places, 5 predicate places. [2022-01-19 07:32:27,927 INFO L470 AbstractCegarLoop]: Abstraction has has 131 places, 128 transitions, 333 flow [2022-01-19 07:32:27,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 82.0909090909091) internal successors, (903), 11 states have internal predecessors, (903), 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) [2022-01-19 07:32:27,928 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:32:27,929 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:32:27,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 07:32:27,929 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:32:27,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:32:27,930 INFO L85 PathProgramCache]: Analyzing trace with hash -815040470, now seen corresponding path program 2 times [2022-01-19 07:32:27,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:32:27,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905818669] [2022-01-19 07:32:27,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:32:27,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:32:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:32:28,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:32:28,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:32:28,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905818669] [2022-01-19 07:32:28,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905818669] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:32:28,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:32:28,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:32:28,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755777912] [2022-01-19 07:32:28,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:32:28,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:32:28,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:32:28,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:32:28,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:32:28,231 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 139 [2022-01-19 07:32:28,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 128 transitions, 333 flow. Second operand has 10 states, 10 states have (on average 85.2) internal successors, (852), 10 states have internal predecessors, (852), 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) [2022-01-19 07:32:28,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:32:28,232 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 139 [2022-01-19 07:32:28,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:32:28,420 INFO L129 PetriNetUnfolder]: 59/400 cut-off events. [2022-01-19 07:32:28,420 INFO L130 PetriNetUnfolder]: For 99/101 co-relation queries the response was YES. [2022-01-19 07:32:28,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 400 events. 59/400 cut-off events. For 99/101 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1904 event pairs, 4 based on Foata normal form. 4/389 useless extension candidates. Maximal degree in co-relation 500. Up to 71 conditions per place. [2022-01-19 07:32:28,422 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 54 selfloop transitions, 31 changer transitions 0/159 dead transitions. [2022-01-19 07:32:28,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 159 transitions, 606 flow [2022-01-19 07:32:28,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 07:32:28,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 07:32:28,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 964 transitions. [2022-01-19 07:32:28,425 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6304774362328319 [2022-01-19 07:32:28,426 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 964 transitions. [2022-01-19 07:32:28,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 964 transitions. [2022-01-19 07:32:28,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:32:28,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 964 transitions. [2022-01-19 07:32:28,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 87.63636363636364) internal successors, (964), 11 states have internal predecessors, (964), 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) [2022-01-19 07:32:28,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 139.0) internal successors, (1668), 12 states have internal predecessors, (1668), 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) [2022-01-19 07:32:28,433 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 139.0) internal successors, (1668), 12 states have internal predecessors, (1668), 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) [2022-01-19 07:32:28,433 INFO L186 Difference]: Start difference. First operand has 131 places, 128 transitions, 333 flow. Second operand 11 states and 964 transitions. [2022-01-19 07:32:28,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 159 transitions, 606 flow [2022-01-19 07:32:28,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 159 transitions, 600 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 07:32:28,441 INFO L242 Difference]: Finished difference. Result has 140 places, 140 transitions, 461 flow [2022-01-19 07:32:28,441 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=461, PETRI_PLACES=140, PETRI_TRANSITIONS=140} [2022-01-19 07:32:28,443 INFO L334 CegarLoopForPetriNet]: 126 programPoint places, 14 predicate places. [2022-01-19 07:32:28,443 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 140 transitions, 461 flow [2022-01-19 07:32:28,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.2) internal successors, (852), 10 states have internal predecessors, (852), 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) [2022-01-19 07:32:28,444 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:32:28,444 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:32:28,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 07:32:28,444 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:32:28,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:32:28,445 INFO L85 PathProgramCache]: Analyzing trace with hash -349745785, now seen corresponding path program 1 times [2022-01-19 07:32:28,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:32:28,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056392018] [2022-01-19 07:32:28,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:32:28,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:32:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:32:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:32:28,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:32:28,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056392018] [2022-01-19 07:32:28,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056392018] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:32:28,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:32:28,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 07:32:28,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019483515] [2022-01-19 07:32:28,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:32:28,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 07:32:28,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:32:28,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 07:32:28,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-01-19 07:32:28,657 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 139 [2022-01-19 07:32:28,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 140 transitions, 461 flow. Second operand has 11 states, 11 states have (on average 82.0909090909091) internal successors, (903), 11 states have internal predecessors, (903), 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) [2022-01-19 07:32:28,659 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:32:28,659 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 139 [2022-01-19 07:32:28,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:32:28,845 INFO L129 PetriNetUnfolder]: 57/381 cut-off events. [2022-01-19 07:32:28,845 INFO L130 PetriNetUnfolder]: For 218/223 co-relation queries the response was YES. [2022-01-19 07:32:28,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 381 events. 57/381 cut-off events. For 218/223 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1665 event pairs, 16 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 649. Up to 151 conditions per place. [2022-01-19 07:32:28,850 INFO L132 encePairwiseOnDemand]: 126/139 looper letters, 58 selfloop transitions, 19 changer transitions 2/149 dead transitions. [2022-01-19 07:32:28,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 149 transitions, 649 flow [2022-01-19 07:32:28,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 07:32:28,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 07:32:28,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 923 transitions. [2022-01-19 07:32:28,853 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6036625245258339 [2022-01-19 07:32:28,854 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 923 transitions. [2022-01-19 07:32:28,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 923 transitions. [2022-01-19 07:32:28,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:32:28,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 923 transitions. [2022-01-19 07:32:28,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 83.9090909090909) internal successors, (923), 11 states have internal predecessors, (923), 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) [2022-01-19 07:32:28,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 139.0) internal successors, (1668), 12 states have internal predecessors, (1668), 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) [2022-01-19 07:32:28,860 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 139.0) internal successors, (1668), 12 states have internal predecessors, (1668), 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) [2022-01-19 07:32:28,860 INFO L186 Difference]: Start difference. First operand has 140 places, 140 transitions, 461 flow. Second operand 11 states and 923 transitions. [2022-01-19 07:32:28,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 149 transitions, 649 flow [2022-01-19 07:32:28,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 149 transitions, 636 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-01-19 07:32:28,869 INFO L242 Difference]: Finished difference. Result has 149 places, 142 transitions, 509 flow [2022-01-19 07:32:28,869 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=509, PETRI_PLACES=149, PETRI_TRANSITIONS=142} [2022-01-19 07:32:28,870 INFO L334 CegarLoopForPetriNet]: 126 programPoint places, 23 predicate places. [2022-01-19 07:32:28,871 INFO L470 AbstractCegarLoop]: Abstraction has has 149 places, 142 transitions, 509 flow [2022-01-19 07:32:28,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 82.0909090909091) internal successors, (903), 11 states have internal predecessors, (903), 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) [2022-01-19 07:32:28,871 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:32:28,871 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:32:28,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 07:32:28,872 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:32:28,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:32:28,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1956691305, now seen corresponding path program 2 times [2022-01-19 07:32:28,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:32:28,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522939017] [2022-01-19 07:32:28,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:32:28,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:32:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:32:29,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:32:29,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:32:29,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522939017] [2022-01-19 07:32:29,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522939017] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:32:29,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:32:29,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-19 07:32:29,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286672504] [2022-01-19 07:32:29,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:32:29,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-19 07:32:29,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:32:29,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-19 07:32:29,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-01-19 07:32:29,157 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 139 [2022-01-19 07:32:29,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 142 transitions, 509 flow. Second operand has 12 states, 12 states have (on average 81.75) internal successors, (981), 12 states have internal predecessors, (981), 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) [2022-01-19 07:32:29,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:32:29,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 139 [2022-01-19 07:32:29,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:32:29,334 INFO L129 PetriNetUnfolder]: 60/404 cut-off events. [2022-01-19 07:32:29,334 INFO L130 PetriNetUnfolder]: For 277/282 co-relation queries the response was YES. [2022-01-19 07:32:29,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 886 conditions, 404 events. 60/404 cut-off events. For 277/282 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1872 event pairs, 17 based on Foata normal form. 3/401 useless extension candidates. Maximal degree in co-relation 698. Up to 148 conditions per place. [2022-01-19 07:32:29,337 INFO L132 encePairwiseOnDemand]: 126/139 looper letters, 56 selfloop transitions, 17 changer transitions 10/153 dead transitions. [2022-01-19 07:32:29,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 153 transitions, 717 flow [2022-01-19 07:32:29,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 07:32:29,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 07:32:29,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1005 transitions. [2022-01-19 07:32:29,340 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6025179856115108 [2022-01-19 07:32:29,340 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1005 transitions. [2022-01-19 07:32:29,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1005 transitions. [2022-01-19 07:32:29,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:32:29,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1005 transitions. [2022-01-19 07:32:29,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 83.75) internal successors, (1005), 12 states have internal predecessors, (1005), 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) [2022-01-19 07:32:29,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 139.0) internal successors, (1807), 13 states have internal predecessors, (1807), 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) [2022-01-19 07:32:29,347 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 139.0) internal successors, (1807), 13 states have internal predecessors, (1807), 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) [2022-01-19 07:32:29,348 INFO L186 Difference]: Start difference. First operand has 149 places, 142 transitions, 509 flow. Second operand 12 states and 1005 transitions. [2022-01-19 07:32:29,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 153 transitions, 717 flow [2022-01-19 07:32:29,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 153 transitions, 688 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-01-19 07:32:29,353 INFO L242 Difference]: Finished difference. Result has 154 places, 140 transitions, 504 flow [2022-01-19 07:32:29,354 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=504, PETRI_PLACES=154, PETRI_TRANSITIONS=140} [2022-01-19 07:32:29,356 INFO L334 CegarLoopForPetriNet]: 126 programPoint places, 28 predicate places. [2022-01-19 07:32:29,356 INFO L470 AbstractCegarLoop]: Abstraction has has 154 places, 140 transitions, 504 flow [2022-01-19 07:32:29,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.75) internal successors, (981), 12 states have internal predecessors, (981), 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) [2022-01-19 07:32:29,357 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:32:29,357 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:32:29,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 07:32:29,357 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:32:29,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:32:29,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1239625413, now seen corresponding path program 3 times [2022-01-19 07:32:29,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:32:29,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312817902] [2022-01-19 07:32:29,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:32:29,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:32:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:32:29,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:32:29,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:32:29,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312817902] [2022-01-19 07:32:29,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312817902] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:32:29,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:32:29,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 07:32:29,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906517035] [2022-01-19 07:32:29,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:32:29,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 07:32:29,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:32:29,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 07:32:29,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-19 07:32:29,506 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 139 [2022-01-19 07:32:29,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 140 transitions, 504 flow. Second operand has 8 states, 8 states have (on average 87.25) internal successors, (698), 8 states have internal predecessors, (698), 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) [2022-01-19 07:32:29,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:32:29,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 139 [2022-01-19 07:32:29,507 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:32:29,644 INFO L129 PetriNetUnfolder]: 31/320 cut-off events. [2022-01-19 07:32:29,644 INFO L130 PetriNetUnfolder]: For 158/163 co-relation queries the response was YES. [2022-01-19 07:32:29,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 320 events. 31/320 cut-off events. For 158/163 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1387 event pairs, 8 based on Foata normal form. 4/316 useless extension candidates. Maximal degree in co-relation 474. Up to 66 conditions per place. [2022-01-19 07:32:29,646 INFO L132 encePairwiseOnDemand]: 129/139 looper letters, 0 selfloop transitions, 0 changer transitions 140/140 dead transitions. [2022-01-19 07:32:29,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 140 transitions, 637 flow [2022-01-19 07:32:29,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 07:32:29,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 07:32:29,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 785 transitions. [2022-01-19 07:32:29,652 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.627498001598721 [2022-01-19 07:32:29,652 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 785 transitions. [2022-01-19 07:32:29,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 785 transitions. [2022-01-19 07:32:29,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:32:29,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 785 transitions. [2022-01-19 07:32:29,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.22222222222223) internal successors, (785), 9 states have internal predecessors, (785), 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) [2022-01-19 07:32:29,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 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) [2022-01-19 07:32:29,657 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 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) [2022-01-19 07:32:29,657 INFO L186 Difference]: Start difference. First operand has 154 places, 140 transitions, 504 flow. Second operand 9 states and 785 transitions. [2022-01-19 07:32:29,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 140 transitions, 637 flow [2022-01-19 07:32:29,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 140 transitions, 599 flow, removed 2 selfloop flow, removed 11 redundant places. [2022-01-19 07:32:29,661 INFO L242 Difference]: Finished difference. Result has 145 places, 0 transitions, 0 flow [2022-01-19 07:32:29,661 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=145, PETRI_TRANSITIONS=0} [2022-01-19 07:32:29,663 INFO L334 CegarLoopForPetriNet]: 126 programPoint places, 19 predicate places. [2022-01-19 07:32:29,663 INFO L470 AbstractCegarLoop]: Abstraction has has 145 places, 0 transitions, 0 flow [2022-01-19 07:32:29,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.25) internal successors, (698), 8 states have internal predecessors, (698), 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) [2022-01-19 07:32:29,666 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 07:32:29,667 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-19 07:32:29,667 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-19 07:32:29,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 07:32:29,670 INFO L732 BasicCegarLoop]: Path program histogram: [3, 2, 1] [2022-01-19 07:32:29,672 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 07:32:29,673 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 07:32:29,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 07:32:29 BasicIcfg [2022-01-19 07:32:29,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 07:32:29,680 INFO L158 Benchmark]: Toolchain (without parser) took 4034.00ms. Allocated memory was 360.7MB in the beginning and 444.6MB in the end (delta: 83.9MB). Free memory was 307.6MB in the beginning and 337.1MB in the end (delta: -29.5MB). Peak memory consumption was 56.4MB. Max. memory is 16.0GB. [2022-01-19 07:32:29,681 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 360.7MB. Free memory is still 323.9MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 07:32:29,683 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.02ms. Allocated memory was 360.7MB in the beginning and 444.6MB in the end (delta: 83.9MB). Free memory was 307.4MB in the beginning and 418.1MB in the end (delta: -110.7MB). Peak memory consumption was 10.6MB. Max. memory is 16.0GB. [2022-01-19 07:32:29,688 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.87ms. Allocated memory is still 444.6MB. Free memory was 418.1MB in the beginning and 416.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 07:32:29,690 INFO L158 Benchmark]: Boogie Preprocessor took 32.28ms. Allocated memory is still 444.6MB. Free memory was 416.5MB in the beginning and 415.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 07:32:29,690 INFO L158 Benchmark]: RCFGBuilder took 404.44ms. Allocated memory is still 444.6MB. Free memory was 415.2MB in the beginning and 397.6MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2022-01-19 07:32:29,691 INFO L158 Benchmark]: TraceAbstraction took 3314.09ms. Allocated memory is still 444.6MB. Free memory was 396.6MB in the beginning and 337.1MB in the end (delta: 59.4MB). Peak memory consumption was 61.5MB. Max. memory is 16.0GB. [2022-01-19 07:32:29,692 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 360.7MB. Free memory is still 323.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 227.02ms. Allocated memory was 360.7MB in the beginning and 444.6MB in the end (delta: 83.9MB). Free memory was 307.4MB in the beginning and 418.1MB in the end (delta: -110.7MB). Peak memory consumption was 10.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.87ms. Allocated memory is still 444.6MB. Free memory was 418.1MB in the beginning and 416.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 32.28ms. Allocated memory is still 444.6MB. Free memory was 416.5MB in the beginning and 415.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 404.44ms. Allocated memory is still 444.6MB. Free memory was 415.2MB in the beginning and 397.6MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 3314.09ms. Allocated memory is still 444.6MB. Free memory was 396.6MB in the beginning and 337.1MB in the end (delta: 59.4MB). Peak memory consumption was 61.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 115]: 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, 152 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: 3.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 447 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 447 mSDsluCounter, 651 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 619 mSDsCounter, 58 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 817 IncrementalHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 58 mSolverCounterUnsat, 198 mSDtfsCounter, 817 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=509occurred in iteration=4, InterpolantAutomatonStates: 61, 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, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 665 NumberOfCodeBlocks, 665 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 659 ConstructedInterpolants, 0 QuantifiedInterpolants, 2308 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 07:32:29,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...