./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef851e22a0a98929f1b90876fcac5ec793e10efa4691f239ca948c8dc39b94fd --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 09:58:40,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:58:40,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:58:40,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:58:40,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:58:40,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:58:40,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:58:40,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:58:40,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:58:40,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:58:40,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:58:40,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:58:40,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:58:40,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:58:40,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:58:40,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:58:40,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:58:40,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:58:40,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:58:40,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:58:40,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:58:40,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:58:40,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:58:40,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:58:40,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:58:40,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:58:40,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:58:40,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:58:40,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:58:40,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:58:40,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:58:40,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:58:40,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:58:40,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:58:40,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:58:40,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:58:40,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:58:40,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:58:40,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:58:40,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:58:40,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:58:40,850 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:58:40,875 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:58:40,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:58:40,876 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:58:40,876 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:58:40,877 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:58:40,877 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:58:40,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:58:40,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:58:40,878 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:58:40,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:58:40,879 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:58:40,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:58:40,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:58:40,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:58:40,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:58:40,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:58:40,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:58:40,880 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:58:40,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:58:40,884 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:58:40,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:58:40,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:58:40,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:58:40,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:58:40,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:58:40,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:58:40,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:58:40,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:58:40,885 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:58:40,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:58:40,886 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:58:40,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:58:40,886 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:58:40,886 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:58:40,886 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:58:40,886 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef851e22a0a98929f1b90876fcac5ec793e10efa4691f239ca948c8dc39b94fd Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:58:41,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:58:41,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:58:41,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:58:41,150 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:58:41,150 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:58:41,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2023-09-01 09:58:42,130 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:58:42,358 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:58:42,359 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2023-09-01 09:58:42,369 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1f2c05cd/c6d9d62c72b044faa7909c78428e9480/FLAG4b547196e [2023-09-01 09:58:42,381 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1f2c05cd/c6d9d62c72b044faa7909c78428e9480 [2023-09-01 09:58:42,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:58:42,384 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:58:42,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:58:42,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:58:42,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:58:42,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:58:42" (1/1) ... [2023-09-01 09:58:42,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2fc4fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:58:42, skipping insertion in model container [2023-09-01 09:58:42,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:58:42" (1/1) ... [2023-09-01 09:58:42,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:58:42,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:58:42,516 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i[945,958] [2023-09-01 09:58:42,598 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:58:42,607 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:58:42,622 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i[945,958] [2023-09-01 09:58:42,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:58:42,691 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:58:42,692 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:58:42,696 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:58:42,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:58:42 WrapperNode [2023-09-01 09:58:42,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:58:42,698 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:58:42,698 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:58:42,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:58:42,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:58:42" (1/1) ... [2023-09-01 09:58:42,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:58:42" (1/1) ... [2023-09-01 09:58:42,747 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2023-09-01 09:58:42,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:58:42,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:58:42,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:58:42,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:58:42,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:58:42" (1/1) ... [2023-09-01 09:58:42,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:58:42" (1/1) ... [2023-09-01 09:58:42,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:58:42" (1/1) ... [2023-09-01 09:58:42,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:58:42" (1/1) ... [2023-09-01 09:58:42,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:58:42" (1/1) ... [2023-09-01 09:58:42,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:58:42" (1/1) ... [2023-09-01 09:58:42,779 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:58:42" (1/1) ... [2023-09-01 09:58:42,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:58:42" (1/1) ... [2023-09-01 09:58:42,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:58:42,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:58:42,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:58:42,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:58:42,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:58:42" (1/1) ... [2023-09-01 09:58:42,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:58:42,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:58:42,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 09:58:42,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 09:58:42,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:58:42,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 09:58:42,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:58:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:58:42,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:58:42,880 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-09-01 09:58:42,880 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-09-01 09:58:42,880 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-09-01 09:58:42,880 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-09-01 09:58:42,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:58:42,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 09:58:42,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:58:42,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:58:42,882 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 09:58:42,963 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:58:42,965 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:58:43,135 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:58:43,141 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:58:43,142 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 09:58:43,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:58:43 BoogieIcfgContainer [2023-09-01 09:58:43,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:58:43,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:58:43,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:58:43,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:58:43,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:58:42" (1/3) ... [2023-09-01 09:58:43,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369e0a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:58:43, skipping insertion in model container [2023-09-01 09:58:43,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:58:42" (2/3) ... [2023-09-01 09:58:43,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369e0a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:58:43, skipping insertion in model container [2023-09-01 09:58:43,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:58:43" (3/3) ... [2023-09-01 09:58:43,170 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_tso.i [2023-09-01 09:58:43,175 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:58:43,181 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:58:43,181 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 09:58:43,181 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:58:43,233 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 09:58:43,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 66 transitions, 142 flow [2023-09-01 09:58:43,302 INFO L130 PetriNetUnfolder]: 2/64 cut-off events. [2023-09-01 09:58:43,302 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:58:43,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-09-01 09:58:43,306 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 66 transitions, 142 flow [2023-09-01 09:58:43,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 54 transitions, 114 flow [2023-09-01 09:58:43,316 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:58:43,325 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 54 transitions, 114 flow [2023-09-01 09:58:43,327 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 54 transitions, 114 flow [2023-09-01 09:58:43,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 54 transitions, 114 flow [2023-09-01 09:58:43,339 INFO L130 PetriNetUnfolder]: 1/54 cut-off events. [2023-09-01 09:58:43,340 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:58:43,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 1/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-09-01 09:58:43,341 INFO L119 LiptonReduction]: Number of co-enabled transitions 540 [2023-09-01 09:58:44,596 INFO L134 LiptonReduction]: Checked pairs total: 999 [2023-09-01 09:58:44,596 INFO L136 LiptonReduction]: Total number of compositions: 48 [2023-09-01 09:58:44,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:58:44,611 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=true, 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;@3a2e03ee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:58:44,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 09:58:44,614 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-09-01 09:58:44,614 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:58:44,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:58:44,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 09:58:44,615 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:58:44,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:58:44,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1741515607, now seen corresponding path program 1 times [2023-09-01 09:58:44,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:58:44,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560274208] [2023-09-01 09:58:44,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:58:44,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:58:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:58:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:58:45,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:58:45,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560274208] [2023-09-01 09:58:45,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560274208] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:58:45,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:58:45,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:58:45,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556247713] [2023-09-01 09:58:45,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:58:45,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:58:45,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:58:45,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:58:45,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:58:45,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 114 [2023-09-01 09:58:45,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:45,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:58:45,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 114 [2023-09-01 09:58:45,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:58:45,224 INFO L130 PetriNetUnfolder]: 63/131 cut-off events. [2023-09-01 09:58:45,225 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 09:58:45,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 131 events. 63/131 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 450 event pairs, 33 based on Foata normal form. 13/144 useless extension candidates. Maximal degree in co-relation 266. Up to 85 conditions per place. [2023-09-01 09:58:45,228 INFO L137 encePairwiseOnDemand]: 107/114 looper letters, 16 selfloop transitions, 5 changer transitions 0/21 dead transitions. [2023-09-01 09:58:45,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 93 flow [2023-09-01 09:58:45,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:58:45,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:58:45,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-09-01 09:58:45,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2023-09-01 09:58:45,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-09-01 09:58:45,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-09-01 09:58:45,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:58:45,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-09-01 09:58:45,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:45,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:45,256 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:45,257 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 3 states and 189 transitions. [2023-09-01 09:58:45,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 93 flow [2023-09-01 09:58:45,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 21 transitions, 90 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:58:45,262 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 66 flow [2023-09-01 09:58:45,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-09-01 09:58:45,268 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2023-09-01 09:58:45,268 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 66 flow [2023-09-01 09:58:45,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:45,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:58:45,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:58:45,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:58:45,271 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:58:45,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:58:45,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1847590487, now seen corresponding path program 1 times [2023-09-01 09:58:45,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:58:45,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908934028] [2023-09-01 09:58:45,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:58:45,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:58:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:58:45,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:58:45,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:58:45,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908934028] [2023-09-01 09:58:45,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908934028] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:58:45,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:58:45,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:58:45,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147178185] [2023-09-01 09:58:45,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:58:45,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:58:45,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:58:45,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:58:45,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:58:45,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 114 [2023-09-01 09:58:45,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:45,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:58:45,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 114 [2023-09-01 09:58:45,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:58:45,514 INFO L130 PetriNetUnfolder]: 50/115 cut-off events. [2023-09-01 09:58:45,517 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-09-01 09:58:45,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 115 events. 50/115 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 389 event pairs, 14 based on Foata normal form. 1/116 useless extension candidates. Maximal degree in co-relation 321. Up to 89 conditions per place. [2023-09-01 09:58:45,518 INFO L137 encePairwiseOnDemand]: 110/114 looper letters, 16 selfloop transitions, 4 changer transitions 0/22 dead transitions. [2023-09-01 09:58:45,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 22 transitions, 132 flow [2023-09-01 09:58:45,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:58:45,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:58:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2023-09-01 09:58:45,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2023-09-01 09:58:45,522 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 192 transitions. [2023-09-01 09:58:45,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 192 transitions. [2023-09-01 09:58:45,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:58:45,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 192 transitions. [2023-09-01 09:58:45,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:45,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:45,526 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:45,526 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 66 flow. Second operand 3 states and 192 transitions. [2023-09-01 09:58:45,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 22 transitions, 132 flow [2023-09-01 09:58:45,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 22 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:58:45,528 INFO L231 Difference]: Finished difference. Result has 22 places, 18 transitions, 82 flow [2023-09-01 09:58:45,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=22, PETRI_TRANSITIONS=18} [2023-09-01 09:58:45,529 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-09-01 09:58:45,529 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 18 transitions, 82 flow [2023-09-01 09:58:45,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:45,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:58:45,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:58:45,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 09:58:45,530 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:58:45,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:58:45,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1847590146, now seen corresponding path program 1 times [2023-09-01 09:58:45,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:58:45,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931668370] [2023-09-01 09:58:45,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:58:45,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:58:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:58:45,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:58:45,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:58:45,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931668370] [2023-09-01 09:58:45,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931668370] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:58:45,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:58:45,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:58:45,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245143009] [2023-09-01 09:58:45,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:58:45,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:58:45,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:58:45,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:58:45,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:58:45,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 114 [2023-09-01 09:58:45,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 18 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:45,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:58:45,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 114 [2023-09-01 09:58:45,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:58:45,716 INFO L130 PetriNetUnfolder]: 50/112 cut-off events. [2023-09-01 09:58:45,716 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 09:58:45,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 112 events. 50/112 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 361 event pairs, 13 based on Foata normal form. 1/113 useless extension candidates. Maximal degree in co-relation 300. Up to 89 conditions per place. [2023-09-01 09:58:45,719 INFO L137 encePairwiseOnDemand]: 110/114 looper letters, 16 selfloop transitions, 4 changer transitions 0/23 dead transitions. [2023-09-01 09:58:45,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 23 transitions, 138 flow [2023-09-01 09:58:45,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:58:45,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:58:45,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2023-09-01 09:58:45,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2023-09-01 09:58:45,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 192 transitions. [2023-09-01 09:58:45,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 192 transitions. [2023-09-01 09:58:45,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:58:45,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 192 transitions. [2023-09-01 09:58:45,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:45,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:45,725 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:45,725 INFO L175 Difference]: Start difference. First operand has 22 places, 18 transitions, 82 flow. Second operand 3 states and 192 transitions. [2023-09-01 09:58:45,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 23 transitions, 138 flow [2023-09-01 09:58:45,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 23 transitions, 134 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:58:45,727 INFO L231 Difference]: Finished difference. Result has 24 places, 20 transitions, 104 flow [2023-09-01 09:58:45,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=24, PETRI_TRANSITIONS=20} [2023-09-01 09:58:45,729 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2023-09-01 09:58:45,731 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 20 transitions, 104 flow [2023-09-01 09:58:45,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:45,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:58:45,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:58:45,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 09:58:45,733 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:58:45,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:58:45,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1440729364, now seen corresponding path program 1 times [2023-09-01 09:58:45,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:58:45,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712666869] [2023-09-01 09:58:45,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:58:45,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:58:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:58:45,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:58:45,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:58:45,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712666869] [2023-09-01 09:58:45,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712666869] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:58:45,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:58:45,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:58:45,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333797425] [2023-09-01 09:58:45,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:58:45,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:58:45,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:58:45,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:58:45,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:58:45,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 114 [2023-09-01 09:58:45,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:45,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:58:45,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 114 [2023-09-01 09:58:45,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:58:45,901 INFO L130 PetriNetUnfolder]: 16/55 cut-off events. [2023-09-01 09:58:45,901 INFO L131 PetriNetUnfolder]: For 30/32 co-relation queries the response was YES. [2023-09-01 09:58:45,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 55 events. 16/55 cut-off events. For 30/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 148 event pairs, 3 based on Foata normal form. 7/61 useless extension candidates. Maximal degree in co-relation 155. Up to 32 conditions per place. [2023-09-01 09:58:45,902 INFO L137 encePairwiseOnDemand]: 110/114 looper letters, 15 selfloop transitions, 3 changer transitions 4/26 dead transitions. [2023-09-01 09:58:45,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 166 flow [2023-09-01 09:58:45,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:58:45,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:58:45,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2023-09-01 09:58:45,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5584795321637427 [2023-09-01 09:58:45,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 191 transitions. [2023-09-01 09:58:45,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 191 transitions. [2023-09-01 09:58:45,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:58:45,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 191 transitions. [2023-09-01 09:58:45,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:45,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:45,917 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:45,917 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 104 flow. Second operand 3 states and 191 transitions. [2023-09-01 09:58:45,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 166 flow [2023-09-01 09:58:45,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 26 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:58:45,920 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 99 flow [2023-09-01 09:58:45,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-09-01 09:58:45,922 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2023-09-01 09:58:45,922 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 99 flow [2023-09-01 09:58:45,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:45,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:58:45,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:58:45,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 09:58:45,923 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:58:45,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:58:45,923 INFO L85 PathProgramCache]: Analyzing trace with hash 766355382, now seen corresponding path program 1 times [2023-09-01 09:58:45,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:58:45,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41531310] [2023-09-01 09:58:45,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:58:45,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:58:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:58:46,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:58:46,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:58:46,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41531310] [2023-09-01 09:58:46,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41531310] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:58:46,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:58:46,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:58:46,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228422553] [2023-09-01 09:58:46,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:58:46,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:58:46,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:58:46,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:58:46,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:58:46,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 114 [2023-09-01 09:58:46,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:46,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:58:46,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 114 [2023-09-01 09:58:46,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:58:46,089 INFO L130 PetriNetUnfolder]: 8/30 cut-off events. [2023-09-01 09:58:46,090 INFO L131 PetriNetUnfolder]: For 24/27 co-relation queries the response was YES. [2023-09-01 09:58:46,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 30 events. 8/30 cut-off events. For 24/27 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 2 based on Foata normal form. 8/37 useless extension candidates. Maximal degree in co-relation 99. Up to 12 conditions per place. [2023-09-01 09:58:46,091 INFO L137 encePairwiseOnDemand]: 110/114 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2023-09-01 09:58:46,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 21 transitions, 143 flow [2023-09-01 09:58:46,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:58:46,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:58:46,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2023-09-01 09:58:46,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2023-09-01 09:58:46,092 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 248 transitions. [2023-09-01 09:58:46,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 248 transitions. [2023-09-01 09:58:46,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:58:46,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 248 transitions. [2023-09-01 09:58:46,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:46,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:46,094 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:46,094 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 99 flow. Second operand 4 states and 248 transitions. [2023-09-01 09:58:46,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 21 transitions, 143 flow [2023-09-01 09:58:46,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 21 transitions, 129 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:58:46,096 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2023-09-01 09:58:46,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2023-09-01 09:58:46,098 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2023-09-01 09:58:46,099 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2023-09-01 09:58:46,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:58:46,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-09-01 09:58:46,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 09:58:46,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 09:58:46,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 09:58:46,103 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-09-01 09:58:46,105 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 09:58:46,106 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 09:58:46,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 09:58:46 BasicIcfg [2023-09-01 09:58:46,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 09:58:46,113 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 09:58:46,113 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 09:58:46,113 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 09:58:46,114 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:58:43" (3/4) ... [2023-09-01 09:58:46,116 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 09:58:46,120 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-09-01 09:58:46,121 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-09-01 09:58:46,124 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-09-01 09:58:46,124 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 09:58:46,125 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 09:58:46,125 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 09:58:46,156 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 09:58:46,157 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 09:58:46,157 INFO L158 Benchmark]: Toolchain (without parser) took 3773.35ms. Allocated memory was 67.1MB in the beginning and 136.3MB in the end (delta: 69.2MB). Free memory was 44.3MB in the beginning and 72.6MB in the end (delta: -28.3MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. [2023-09-01 09:58:46,157 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 67.1MB. Free memory is still 45.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:58:46,158 INFO L158 Benchmark]: CACSL2BoogieTranslator took 312.65ms. Allocated memory was 67.1MB in the beginning and 113.2MB in the end (delta: 46.1MB). Free memory was 43.9MB in the beginning and 86.7MB in the end (delta: -42.8MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2023-09-01 09:58:46,158 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.94ms. Allocated memory is still 113.2MB. Free memory was 86.7MB in the beginning and 84.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:58:46,158 INFO L158 Benchmark]: Boogie Preprocessor took 36.74ms. Allocated memory is still 113.2MB. Free memory was 84.8MB in the beginning and 83.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:58:46,159 INFO L158 Benchmark]: RCFGBuilder took 358.60ms. Allocated memory is still 113.2MB. Free memory was 83.4MB in the beginning and 70.7MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 09:58:46,159 INFO L158 Benchmark]: TraceAbstraction took 2966.21ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 70.1MB in the beginning and 75.7MB in the end (delta: -5.6MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2023-09-01 09:58:46,159 INFO L158 Benchmark]: Witness Printer took 43.97ms. Allocated memory is still 136.3MB. Free memory was 74.7MB in the beginning and 72.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:58:46,161 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 67.1MB. Free memory is still 45.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 312.65ms. Allocated memory was 67.1MB in the beginning and 113.2MB in the end (delta: 46.1MB). Free memory was 43.9MB in the beginning and 86.7MB in the end (delta: -42.8MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.94ms. Allocated memory is still 113.2MB. Free memory was 86.7MB in the beginning and 84.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.74ms. Allocated memory is still 113.2MB. Free memory was 84.8MB in the beginning and 83.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 358.60ms. Allocated memory is still 113.2MB. Free memory was 83.4MB in the beginning and 70.7MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2966.21ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 70.1MB in the beginning and 75.7MB in the end (delta: -5.6MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * Witness Printer took 43.97ms. Allocated memory is still 136.3MB. Free memory was 74.7MB in the beginning and 72.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3s, 60 PlacesBefore, 19 PlacesAfterwards, 54 TransitionsBefore, 13 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 48 TotalNumberOfCompositions, 999 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 501, independent: 446, independent conditional: 0, independent unconditional: 446, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 306, independent: 284, independent conditional: 0, independent unconditional: 284, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 501, independent: 162, independent conditional: 0, independent unconditional: 162, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 306, unknown conditional: 0, unknown unconditional: 306] , Statistics on independence cache: Total cache size (in pairs): 28, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: 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, 81 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: 2.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 120 IncrementalHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 18 mSDtfsCounter, 120 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=3, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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! [2023-09-01 09:58:46,184 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE