/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/unroll-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 12:03:49,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 12:03:49,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 12:03:49,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 12:03:49,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 12:03:49,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 12:03:49,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 12:03:49,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 12:03:49,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 12:03:49,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 12:03:49,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 12:03:49,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 12:03:49,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 12:03:49,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 12:03:49,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 12:03:49,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 12:03:49,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 12:03:49,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 12:03:49,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 12:03:49,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 12:03:49,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 12:03:49,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 12:03:49,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 12:03:49,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 12:03:49,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 12:03:49,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 12:03:49,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 12:03:49,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 12:03:49,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 12:03:49,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 12:03:49,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 12:03:49,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 12:03:49,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 12:03:49,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 12:03:49,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 12:03:49,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 12:03:49,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 12:03:49,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 12:03:49,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 12:03:49,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 12:03:49,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 12:03:49,613 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 12:03:49,638 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 12:03:49,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 12:03:49,640 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 12:03:49,640 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 12:03:49,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 12:03:49,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 12:03:49,640 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 12:03:49,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 12:03:49,641 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 12:03:49,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 12:03:49,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 12:03:49,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 12:03:49,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 12:03:49,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 12:03:49,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 12:03:49,642 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 12:03:49,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 12:03:49,642 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 12:03:49,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 12:03:49,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 12:03:49,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 12:03:49,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 12:03:49,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 12:03:49,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:03:49,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 12:03:49,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 12:03:49,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 12:03:49,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 12:03:49,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 12:03:49,644 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 12:03:49,644 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 12:03:49,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 12:03:49,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 12:03:49,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 12:03:49,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 12:03:49,894 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 12:03:49,895 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 12:03:49,896 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-4.wvr.c [2022-09-16 12:03:49,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bb7ac5e7/965c397a17974858b0ecbf19afc3adaf/FLAG84df2b95e [2022-09-16 12:03:50,405 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 12:03:50,406 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-4.wvr.c [2022-09-16 12:03:50,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bb7ac5e7/965c397a17974858b0ecbf19afc3adaf/FLAG84df2b95e [2022-09-16 12:03:50,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bb7ac5e7/965c397a17974858b0ecbf19afc3adaf [2022-09-16 12:03:50,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 12:03:50,761 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 12:03:50,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 12:03:50,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 12:03:50,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 12:03:50,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:03:50" (1/1) ... [2022-09-16 12:03:50,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d6f5e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:50, skipping insertion in model container [2022-09-16 12:03:50,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:03:50" (1/1) ... [2022-09-16 12:03:50,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 12:03:50,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 12:03:50,963 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/unroll-4.wvr.c[2572,2585] [2022-09-16 12:03:50,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:03:50,980 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 12:03:51,020 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/unroll-4.wvr.c[2572,2585] [2022-09-16 12:03:51,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:03:51,035 INFO L208 MainTranslator]: Completed translation [2022-09-16 12:03:51,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:51 WrapperNode [2022-09-16 12:03:51,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 12:03:51,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 12:03:51,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 12:03:51,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 12:03:51,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:51" (1/1) ... [2022-09-16 12:03:51,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:51" (1/1) ... [2022-09-16 12:03:51,090 INFO L138 Inliner]: procedures = 24, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 156 [2022-09-16 12:03:51,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 12:03:51,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 12:03:51,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 12:03:51,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 12:03:51,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:51" (1/1) ... [2022-09-16 12:03:51,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:51" (1/1) ... [2022-09-16 12:03:51,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:51" (1/1) ... [2022-09-16 12:03:51,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:51" (1/1) ... [2022-09-16 12:03:51,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:51" (1/1) ... [2022-09-16 12:03:51,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:51" (1/1) ... [2022-09-16 12:03:51,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:51" (1/1) ... [2022-09-16 12:03:51,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 12:03:51,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 12:03:51,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 12:03:51,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 12:03:51,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:51" (1/1) ... [2022-09-16 12:03:51,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:03:51,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:03:51,160 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) [2022-09-16 12:03:51,167 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 [2022-09-16 12:03:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 12:03:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 12:03:51,197 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 12:03:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 12:03:51,197 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 12:03:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 12:03:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 12:03:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 12:03:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 12:03:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 12:03:51,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 12:03:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 12:03:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 12:03:51,200 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 12:03:51,303 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 12:03:51,305 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 12:03:51,663 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 12:03:51,672 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 12:03:51,672 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-16 12:03:51,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:03:51 BoogieIcfgContainer [2022-09-16 12:03:51,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 12:03:51,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 12:03:51,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 12:03:51,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 12:03:51,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 12:03:50" (1/3) ... [2022-09-16 12:03:51,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e40f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:03:51, skipping insertion in model container [2022-09-16 12:03:51,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:51" (2/3) ... [2022-09-16 12:03:51,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e40f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:03:51, skipping insertion in model container [2022-09-16 12:03:51,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:03:51" (3/3) ... [2022-09-16 12:03:51,682 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.c [2022-09-16 12:03:51,699 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 12:03:51,699 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-09-16 12:03:51,699 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 12:03:51,828 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 12:03:51,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 202 transitions, 420 flow [2022-09-16 12:03:51,991 INFO L130 PetriNetUnfolder]: 16/200 cut-off events. [2022-09-16 12:03:51,991 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 12:03:51,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 200 events. 16/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 180 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 114. Up to 2 conditions per place. [2022-09-16 12:03:51,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 202 transitions, 420 flow [2022-09-16 12:03:52,006 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 68 transitions, 136 flow [2022-09-16 12:03:52,023 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:03:52,031 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@42964e99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:03:52,031 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-16 12:03:52,050 INFO L130 PetriNetUnfolder]: 3/62 cut-off events. [2022-09-16 12:03:52,050 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:03:52,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:03:52,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:03:52,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-16 12:03:52,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:03:52,058 INFO L85 PathProgramCache]: Analyzing trace with hash -573400187, now seen corresponding path program 1 times [2022-09-16 12:03:52,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:03:52,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343268816] [2022-09-16 12:03:52,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:52,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:03:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:52,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:03:52,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:03:52,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343268816] [2022-09-16 12:03:52,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343268816] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:03:52,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:03:52,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:03:52,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794175099] [2022-09-16 12:03:52,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:03:52,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:03:52,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:03:52,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:03:52,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:03:52,399 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 202 [2022-09-16 12:03:52,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 68 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 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) [2022-09-16 12:03:52,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:03:52,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 202 [2022-09-16 12:03:52,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:03:52,488 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2022-09-16 12:03:52,489 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:03:52,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 74 events. 1/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 3/72 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2022-09-16 12:03:52,491 INFO L137 encePairwiseOnDemand]: 193/202 looper letters, 14 selfloop transitions, 4 changer transitions 3/72 dead transitions. [2022-09-16 12:03:52,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 72 transitions, 180 flow [2022-09-16 12:03:52,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:03:52,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:03:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 883 transitions. [2022-09-16 12:03:52,510 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8742574257425743 [2022-09-16 12:03:52,511 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 883 transitions. [2022-09-16 12:03:52,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 883 transitions. [2022-09-16 12:03:52,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:03:52,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 883 transitions. [2022-09-16 12:03:52,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.6) internal successors, (883), 5 states have internal predecessors, (883), 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) [2022-09-16 12:03:52,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 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) [2022-09-16 12:03:52,529 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 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) [2022-09-16 12:03:52,531 INFO L175 Difference]: Start difference. First operand has 65 places, 68 transitions, 136 flow. Second operand 5 states and 883 transitions. [2022-09-16 12:03:52,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 72 transitions, 180 flow [2022-09-16 12:03:52,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:03:52,536 INFO L231 Difference]: Finished difference. Result has 72 places, 65 transitions, 154 flow [2022-09-16 12:03:52,538 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=72, PETRI_TRANSITIONS=65} [2022-09-16 12:03:52,542 INFO L287 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2022-09-16 12:03:52,542 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 154 flow [2022-09-16 12:03:52,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 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) [2022-09-16 12:03:52,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:03:52,543 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:03:52,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 12:03:52,544 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-16 12:03:52,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:03:52,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1244123267, now seen corresponding path program 1 times [2022-09-16 12:03:52,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:03:52,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076263161] [2022-09-16 12:03:52,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:52,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:03:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:52,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:03:52,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:03:52,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076263161] [2022-09-16 12:03:52,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076263161] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:03:52,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766906134] [2022-09-16 12:03:52,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:52,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:03:52,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:03:52,657 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:03:52,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 12:03:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:52,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:03:52,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:03:52,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:03:52,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:03:52,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:03:52,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766906134] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:03:52,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:03:52,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 12:03:52,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3566277] [2022-09-16 12:03:52,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:03:52,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 12:03:52,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:03:52,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 12:03:52,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 12:03:52,942 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 202 [2022-09-16 12:03:52,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 154 flow. Second operand has 12 states, 12 states have (on average 174.66666666666666) internal successors, (2096), 12 states have internal predecessors, (2096), 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) [2022-09-16 12:03:52,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:03:52,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 202 [2022-09-16 12:03:52,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:03:53,159 INFO L130 PetriNetUnfolder]: 1/100 cut-off events. [2022-09-16 12:03:53,160 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-09-16 12:03:53,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 100 events. 1/100 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 3/103 useless extension candidates. Maximal degree in co-relation 88. Up to 11 conditions per place. [2022-09-16 12:03:53,161 INFO L137 encePairwiseOnDemand]: 195/202 looper letters, 23 selfloop transitions, 18 changer transitions 0/92 dead transitions. [2022-09-16 12:03:53,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 92 transitions, 312 flow [2022-09-16 12:03:53,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 12:03:53,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 12:03:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3140 transitions. [2022-09-16 12:03:53,170 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8635863586358636 [2022-09-16 12:03:53,170 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3140 transitions. [2022-09-16 12:03:53,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3140 transitions. [2022-09-16 12:03:53,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:03:53,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3140 transitions. [2022-09-16 12:03:53,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 174.44444444444446) internal successors, (3140), 18 states have internal predecessors, (3140), 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) [2022-09-16 12:03:53,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 202.0) internal successors, (3838), 19 states have internal predecessors, (3838), 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) [2022-09-16 12:03:53,192 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 202.0) internal successors, (3838), 19 states have internal predecessors, (3838), 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) [2022-09-16 12:03:53,192 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 154 flow. Second operand 18 states and 3140 transitions. [2022-09-16 12:03:53,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 92 transitions, 312 flow [2022-09-16 12:03:53,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 92 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:03:53,197 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 258 flow [2022-09-16 12:03:53,198 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=258, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2022-09-16 12:03:53,199 INFO L287 CegarLoopForPetriNet]: 65 programPoint places, 24 predicate places. [2022-09-16 12:03:53,199 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 258 flow [2022-09-16 12:03:53,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 174.66666666666666) internal successors, (2096), 12 states have internal predecessors, (2096), 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) [2022-09-16 12:03:53,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:03:53,201 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:03:53,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-16 12:03:53,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:03:53,416 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-16 12:03:53,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:03:53,416 INFO L85 PathProgramCache]: Analyzing trace with hash 86884805, now seen corresponding path program 1 times [2022-09-16 12:03:53,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:03:53,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025748821] [2022-09-16 12:03:53,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:53,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:03:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:53,522 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:03:53,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:03:53,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025748821] [2022-09-16 12:03:53,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025748821] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:03:53,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411988977] [2022-09-16 12:03:53,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:53,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:03:53,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:03:53,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:03:53,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 12:03:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:53,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:03:53,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:03:53,640 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:03:53,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:03:53,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411988977] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:03:53,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:03:53,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:03:53,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64425580] [2022-09-16 12:03:53,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:03:53,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:03:53,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:03:53,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:03:53,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:03:53,644 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 202 [2022-09-16 12:03:53,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 174.33333333333334) internal successors, (1046), 6 states have internal predecessors, (1046), 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) [2022-09-16 12:03:53,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:03:53,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 202 [2022-09-16 12:03:53,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:03:53,710 INFO L130 PetriNetUnfolder]: 1/96 cut-off events. [2022-09-16 12:03:53,710 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-09-16 12:03:53,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 96 events. 1/96 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 4/100 useless extension candidates. Maximal degree in co-relation 72. Up to 17 conditions per place. [2022-09-16 12:03:53,711 INFO L137 encePairwiseOnDemand]: 197/202 looper letters, 15 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2022-09-16 12:03:53,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 77 transitions, 293 flow [2022-09-16 12:03:53,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:03:53,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:03:53,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1222 transitions. [2022-09-16 12:03:53,716 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8642149929278642 [2022-09-16 12:03:53,716 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1222 transitions. [2022-09-16 12:03:53,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1222 transitions. [2022-09-16 12:03:53,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:03:53,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1222 transitions. [2022-09-16 12:03:53,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 174.57142857142858) internal successors, (1222), 7 states have internal predecessors, (1222), 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) [2022-09-16 12:03:53,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 202.0) internal successors, (1616), 8 states have internal predecessors, (1616), 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) [2022-09-16 12:03:53,724 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 202.0) internal successors, (1616), 8 states have internal predecessors, (1616), 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) [2022-09-16 12:03:53,725 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 258 flow. Second operand 7 states and 1222 transitions. [2022-09-16 12:03:53,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 77 transitions, 293 flow [2022-09-16 12:03:53,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 77 transitions, 261 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 12:03:53,732 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 221 flow [2022-09-16 12:03:53,733 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=221, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2022-09-16 12:03:53,735 INFO L287 CegarLoopForPetriNet]: 65 programPoint places, 20 predicate places. [2022-09-16 12:03:53,735 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 221 flow [2022-09-16 12:03:53,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 174.33333333333334) internal successors, (1046), 6 states have internal predecessors, (1046), 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) [2022-09-16 12:03:53,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:03:53,736 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:03:53,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 12:03:53,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 12:03:53,953 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-16 12:03:53,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:03:53,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1494796677, now seen corresponding path program 2 times [2022-09-16 12:03:53,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:03:53,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068927783] [2022-09-16 12:03:53,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:53,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:03:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:03:54,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:03:54,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068927783] [2022-09-16 12:03:54,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068927783] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:03:54,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505510115] [2022-09-16 12:03:54,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:03:54,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:03:54,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:03:54,106 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:03:54,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 12:03:54,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 12:03:54,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:03:54,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 12:03:54,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:03:54,344 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 12:03:54,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:03:54,488 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 12:03:54,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505510115] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:03:54,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:03:54,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 12:03:54,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334460991] [2022-09-16 12:03:54,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:03:54,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 12:03:54,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:03:54,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 12:03:54,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 12:03:54,493 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 202 [2022-09-16 12:03:54,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 221 flow. Second operand has 18 states, 18 states have (on average 159.72222222222223) internal successors, (2875), 18 states have internal predecessors, (2875), 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) [2022-09-16 12:03:54,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:03:54,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 202 [2022-09-16 12:03:54,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:03:54,902 INFO L130 PetriNetUnfolder]: 1/106 cut-off events. [2022-09-16 12:03:54,903 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-09-16 12:03:54,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 106 events. 1/106 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/108 useless extension candidates. Maximal degree in co-relation 121. Up to 7 conditions per place. [2022-09-16 12:03:54,903 INFO L137 encePairwiseOnDemand]: 191/202 looper letters, 0 selfloop transitions, 0 changer transitions 96/96 dead transitions. [2022-09-16 12:03:54,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 96 transitions, 396 flow [2022-09-16 12:03:54,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 12:03:54,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-16 12:03:54,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3802 transitions. [2022-09-16 12:03:54,911 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7842409240924092 [2022-09-16 12:03:54,911 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3802 transitions. [2022-09-16 12:03:54,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3802 transitions. [2022-09-16 12:03:54,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:03:54,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3802 transitions. [2022-09-16 12:03:54,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 158.41666666666666) internal successors, (3802), 24 states have internal predecessors, (3802), 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) [2022-09-16 12:03:54,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 202.0) internal successors, (5050), 25 states have internal predecessors, (5050), 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) [2022-09-16 12:03:54,933 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 202.0) internal successors, (5050), 25 states have internal predecessors, (5050), 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) [2022-09-16 12:03:54,933 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 221 flow. Second operand 24 states and 3802 transitions. [2022-09-16 12:03:54,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 96 transitions, 396 flow [2022-09-16 12:03:54,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 371 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-09-16 12:03:54,936 INFO L231 Difference]: Finished difference. Result has 98 places, 0 transitions, 0 flow [2022-09-16 12:03:54,936 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=0, PETRI_PLACES=98, PETRI_TRANSITIONS=0} [2022-09-16 12:03:54,937 INFO L287 CegarLoopForPetriNet]: 65 programPoint places, 33 predicate places. [2022-09-16 12:03:54,937 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 0 transitions, 0 flow [2022-09-16 12:03:54,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 159.72222222222223) internal successors, (2875), 18 states have internal predecessors, (2875), 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) [2022-09-16 12:03:54,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-09-16 12:03:54,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-09-16 12:03:54,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-09-16 12:03:54,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-09-16 12:03:54,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 12:03:55,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:03:55,156 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-09-16 12:03:55,159 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 12:03:55,159 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 12:03:55,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 12:03:55 BasicIcfg [2022-09-16 12:03:55,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 12:03:55,165 INFO L158 Benchmark]: Toolchain (without parser) took 4403.92ms. Allocated memory was 181.4MB in the beginning and 273.7MB in the end (delta: 92.3MB). Free memory was 152.1MB in the beginning and 105.9MB in the end (delta: 46.2MB). Peak memory consumption was 138.6MB. Max. memory is 8.0GB. [2022-09-16 12:03:55,165 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 181.4MB. Free memory is still 137.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 12:03:55,166 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.10ms. Allocated memory was 181.4MB in the beginning and 273.7MB in the end (delta: 92.3MB). Free memory was 151.8MB in the beginning and 240.8MB in the end (delta: -89.0MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2022-09-16 12:03:55,170 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.23ms. Allocated memory is still 273.7MB. Free memory was 240.3MB in the beginning and 238.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 12:03:55,174 INFO L158 Benchmark]: Boogie Preprocessor took 39.98ms. Allocated memory is still 273.7MB. Free memory was 238.7MB in the beginning and 237.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 12:03:55,175 INFO L158 Benchmark]: RCFGBuilder took 542.59ms. Allocated memory is still 273.7MB. Free memory was 237.1MB in the beginning and 220.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-09-16 12:03:55,175 INFO L158 Benchmark]: TraceAbstraction took 3487.91ms. Allocated memory is still 273.7MB. Free memory was 219.8MB in the beginning and 105.9MB in the end (delta: 113.9MB). Peak memory consumption was 115.0MB. Max. memory is 8.0GB. [2022-09-16 12:03:55,177 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 181.4MB. Free memory is still 137.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 274.10ms. Allocated memory was 181.4MB in the beginning and 273.7MB in the end (delta: 92.3MB). Free memory was 151.8MB in the beginning and 240.8MB in the end (delta: -89.0MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 53.23ms. Allocated memory is still 273.7MB. Free memory was 240.3MB in the beginning and 238.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.98ms. Allocated memory is still 273.7MB. Free memory was 238.7MB in the beginning and 237.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 542.59ms. Allocated memory is still 273.7MB. Free memory was 237.1MB in the beginning and 220.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 3487.91ms. Allocated memory is still 273.7MB. Free memory was 219.8MB in the beginning and 105.9MB in the end (delta: 113.9MB). Peak memory consumption was 115.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 264 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.3s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 188 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 188 mSDsluCounter, 94 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 74 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 286 IncrementalHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 20 mSDtfsCounter, 286 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 440 GetRequests, 366 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=2, InterpolantAutomatonStates: 54, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 509 NumberOfCodeBlocks, 473 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 659 ConstructedInterpolants, 0 QuantifiedInterpolants, 1193 SizeOfPredicates, 12 NumberOfNonLiveVariables, 424 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 123/266 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 12:03:55,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...