./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/triangular-longer-1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/triangular-longer-1.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 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 22:50:44,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 22:50:44,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 22:50:44,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 22:50:44,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 22:50:44,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 22:50:44,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 22:50:44,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 22:50:44,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 22:50:44,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 22:50:44,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 22:50:44,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 22:50:44,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 22:50:44,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 22:50:44,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 22:50:44,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 22:50:44,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 22:50:44,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 22:50:44,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 22:50:44,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 22:50:44,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 22:50:44,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 22:50:44,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 22:50:44,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 22:50:44,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 22:50:44,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 22:50:44,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 22:50:44,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 22:50:44,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 22:50:44,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 22:50:44,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 22:50:44,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 22:50:44,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 22:50:44,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 22:50:44,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 22:50:44,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 22:50:44,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 22:50:44,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 22:50:44,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 22:50:44,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 22:50:44,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 22:50:44,777 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 22:50:44,809 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 22:50:44,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 22:50:44,810 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 22:50:44,810 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 22:50:44,811 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 22:50:44,812 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 22:50:44,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 22:50:44,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 22:50:44,813 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 22:50:44,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 22:50:44,814 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 22:50:44,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 22:50:44,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 22:50:44,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 22:50:44,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 22:50:44,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 22:50:44,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 22:50:44,815 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 22:50:44,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 22:50:44,816 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 22:50:44,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 22:50:44,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 22:50:44,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 22:50:44,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 22:50:44,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 22:50:44,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 22:50:44,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 22:50:44,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 22:50:44,818 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 22:50:44,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 22:50:44,818 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 22:50:44,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 22:50:44,819 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 22:50:44,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 22:50:44,819 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 22:50:44,820 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 22:50:45,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 22:50:45,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 22:50:45,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 22:50:45,151 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 22:50:45,152 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 22:50:45,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-1.i [2023-08-30 22:50:46,378 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 22:50:46,647 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 22:50:46,648 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i [2023-08-30 22:50:46,660 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca8ae326b/96d9266d34b24ad4aac862e8ea1e1812/FLAG3a69a38ef [2023-08-30 22:50:46,675 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca8ae326b/96d9266d34b24ad4aac862e8ea1e1812 [2023-08-30 22:50:46,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 22:50:46,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 22:50:46,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 22:50:46,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 22:50:46,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 22:50:46,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:50:46" (1/1) ... [2023-08-30 22:50:46,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4455c422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:46, skipping insertion in model container [2023-08-30 22:50:46,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:50:46" (1/1) ... [2023-08-30 22:50:46,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 22:50:46,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 22:50:47,009 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/triangular-longer-1.i[30961,30974] [2023-08-30 22:50:47,013 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 22:50:47,029 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 22:50:47,080 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/triangular-longer-1.i[30961,30974] [2023-08-30 22:50:47,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 22:50:47,111 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 22:50:47,113 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 22:50:47,118 INFO L208 MainTranslator]: Completed translation [2023-08-30 22:50:47,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:47 WrapperNode [2023-08-30 22:50:47,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 22:50:47,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 22:50:47,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 22:50:47,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 22:50:47,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:47" (1/1) ... [2023-08-30 22:50:47,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:47" (1/1) ... [2023-08-30 22:50:47,159 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-08-30 22:50:47,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 22:50:47,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 22:50:47,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 22:50:47,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 22:50:47,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:47" (1/1) ... [2023-08-30 22:50:47,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:47" (1/1) ... [2023-08-30 22:50:47,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:47" (1/1) ... [2023-08-30 22:50:47,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:47" (1/1) ... [2023-08-30 22:50:47,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:47" (1/1) ... [2023-08-30 22:50:47,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:47" (1/1) ... [2023-08-30 22:50:47,201 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:47" (1/1) ... [2023-08-30 22:50:47,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:47" (1/1) ... [2023-08-30 22:50:47,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 22:50:47,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 22:50:47,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 22:50:47,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 22:50:47,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:47" (1/1) ... [2023-08-30 22:50:47,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 22:50:47,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:50:47,250 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) [2023-08-30 22:50:47,263 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 [2023-08-30 22:50:47,292 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 22:50:47,292 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 22:50:47,292 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 22:50:47,292 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 22:50:47,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 22:50:47,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 22:50:47,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 22:50:47,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 22:50:47,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 22:50:47,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 22:50:47,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 22:50:47,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 22:50:47,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 22:50:47,295 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 22:50:47,474 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 22:50:47,476 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 22:50:47,594 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 22:50:47,600 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 22:50:47,600 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 22:50:47,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:50:47 BoogieIcfgContainer [2023-08-30 22:50:47,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 22:50:47,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 22:50:47,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 22:50:47,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 22:50:47,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:50:46" (1/3) ... [2023-08-30 22:50:47,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767465d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:50:47, skipping insertion in model container [2023-08-30 22:50:47,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:47" (2/3) ... [2023-08-30 22:50:47,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767465d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:50:47, skipping insertion in model container [2023-08-30 22:50:47,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:50:47" (3/3) ... [2023-08-30 22:50:47,612 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2023-08-30 22:50:47,617 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 22:50:47,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 22:50:47,625 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 22:50:47,625 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 22:50:47,672 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 22:50:47,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 66 transitions, 142 flow [2023-08-30 22:50:47,741 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2023-08-30 22:50:47,741 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 22:50:47,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-08-30 22:50:47,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 66 transitions, 142 flow [2023-08-30 22:50:47,749 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 64 transitions, 134 flow [2023-08-30 22:50:47,752 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 22:50:47,760 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 64 transitions, 134 flow [2023-08-30 22:50:47,762 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 64 transitions, 134 flow [2023-08-30 22:50:47,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 64 transitions, 134 flow [2023-08-30 22:50:47,799 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2023-08-30 22:50:47,799 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 22:50:47,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-08-30 22:50:47,801 INFO L119 LiptonReduction]: Number of co-enabled transitions 1078 [2023-08-30 22:50:49,593 INFO L134 LiptonReduction]: Checked pairs total: 999 [2023-08-30 22:50:49,593 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-08-30 22:50:49,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 22:50:49,612 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;@9c212c5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 22:50:49,613 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-30 22:50:49,620 INFO L130 PetriNetUnfolder]: 3/13 cut-off events. [2023-08-30 22:50:49,620 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 22:50:49,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:49,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 22:50:49,621 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:49,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:49,625 INFO L85 PathProgramCache]: Analyzing trace with hash -776471266, now seen corresponding path program 1 times [2023-08-30 22:50:49,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:49,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013808968] [2023-08-30 22:50:49,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:49,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:49,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:49,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:49,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013808968] [2023-08-30 22:50:49,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013808968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:50:49,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:50:49,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 22:50:49,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842540336] [2023-08-30 22:50:49,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:50:50,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 22:50:50,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:50,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 22:50:50,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 22:50:50,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 124 [2023-08-30 22:50:50,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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) [2023-08-30 22:50:50,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:50,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 124 [2023-08-30 22:50:50,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:50,145 INFO L130 PetriNetUnfolder]: 94/152 cut-off events. [2023-08-30 22:50:50,146 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 22:50:50,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 94/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 393 event pairs, 11 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 306. Up to 76 conditions per place. [2023-08-30 22:50:50,150 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 18 selfloop transitions, 4 changer transitions 4/26 dead transitions. [2023-08-30 22:50:50,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 26 transitions, 110 flow [2023-08-30 22:50:50,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 22:50:50,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 22:50:50,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 245 transitions. [2023-08-30 22:50:50,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4939516129032258 [2023-08-30 22:50:50,170 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 245 transitions. [2023-08-30 22:50:50,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 245 transitions. [2023-08-30 22:50:50,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:50,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 245 transitions. [2023-08-30 22:50:50,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 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) [2023-08-30 22:50:50,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 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) [2023-08-30 22:50:50,180 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 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) [2023-08-30 22:50:50,182 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 4 states and 245 transitions. [2023-08-30 22:50:50,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 26 transitions, 110 flow [2023-08-30 22:50:50,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 22:50:50,185 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 53 flow [2023-08-30 22:50:50,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=53, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-30 22:50:50,190 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2023-08-30 22:50:50,190 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 53 flow [2023-08-30 22:50:50,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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) [2023-08-30 22:50:50,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:50,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:50,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 22:50:50,191 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:50,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:50,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1135033148, now seen corresponding path program 1 times [2023-08-30 22:50:50,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:50,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288588613] [2023-08-30 22:50:50,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:50,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:50,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:50,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288588613] [2023-08-30 22:50:50,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288588613] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:50:50,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:50:50,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 22:50:50,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567973665] [2023-08-30 22:50:50,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:50:50,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 22:50:50,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:50,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 22:50:50,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 22:50:50,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:50,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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) [2023-08-30 22:50:50,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:50,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:50,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:50,448 INFO L130 PetriNetUnfolder]: 126/217 cut-off events. [2023-08-30 22:50:50,448 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2023-08-30 22:50:50,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 217 events. 126/217 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 654 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 535. Up to 89 conditions per place. [2023-08-30 22:50:50,453 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2023-08-30 22:50:50,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 42 transitions, 215 flow [2023-08-30 22:50:50,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 22:50:50,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 22:50:50,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 356 transitions. [2023-08-30 22:50:50,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2023-08-30 22:50:50,460 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 356 transitions. [2023-08-30 22:50:50,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 356 transitions. [2023-08-30 22:50:50,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:50,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 356 transitions. [2023-08-30 22:50:50,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.333333333333336) internal successors, (356), 6 states have internal predecessors, (356), 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) [2023-08-30 22:50:50,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2023-08-30 22:50:50,468 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2023-08-30 22:50:50,468 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 53 flow. Second operand 6 states and 356 transitions. [2023-08-30 22:50:50,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 42 transitions, 215 flow [2023-08-30 22:50:50,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 42 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 22:50:50,473 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 134 flow [2023-08-30 22:50:50,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-08-30 22:50:50,474 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 11 predicate places. [2023-08-30 22:50:50,474 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 134 flow [2023-08-30 22:50:50,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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) [2023-08-30 22:50:50,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:50,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:50,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 22:50:50,475 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:50,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:50,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1135047098, now seen corresponding path program 2 times [2023-08-30 22:50:50,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:50,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666084624] [2023-08-30 22:50:50,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:50,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:50,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:50,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:50,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666084624] [2023-08-30 22:50:50,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666084624] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:50:50,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:50:50,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 22:50:50,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416872737] [2023-08-30 22:50:50,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:50:50,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 22:50:50,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:50,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 22:50:50,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 22:50:50,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:50,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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) [2023-08-30 22:50:50,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:50,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:50,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:50,761 INFO L130 PetriNetUnfolder]: 114/199 cut-off events. [2023-08-30 22:50:50,761 INFO L131 PetriNetUnfolder]: For 280/280 co-relation queries the response was YES. [2023-08-30 22:50:50,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 199 events. 114/199 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 630 event pairs, 19 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 636. Up to 84 conditions per place. [2023-08-30 22:50:50,764 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 29 selfloop transitions, 9 changer transitions 4/42 dead transitions. [2023-08-30 22:50:50,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 284 flow [2023-08-30 22:50:50,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 22:50:50,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 22:50:50,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 298 transitions. [2023-08-30 22:50:50,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806451612903226 [2023-08-30 22:50:50,767 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 298 transitions. [2023-08-30 22:50:50,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 298 transitions. [2023-08-30 22:50:50,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:50,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 298 transitions. [2023-08-30 22:50:50,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 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) [2023-08-30 22:50:50,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2023-08-30 22:50:50,770 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2023-08-30 22:50:50,770 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 134 flow. Second operand 5 states and 298 transitions. [2023-08-30 22:50:50,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 284 flow [2023-08-30 22:50:50,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 282 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 22:50:50,776 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 182 flow [2023-08-30 22:50:50,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-08-30 22:50:50,777 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 17 predicate places. [2023-08-30 22:50:50,780 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 182 flow [2023-08-30 22:50:50,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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) [2023-08-30 22:50:50,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:50,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:50,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 22:50:50,781 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:50,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:50,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1601852847, now seen corresponding path program 1 times [2023-08-30 22:50:50,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:50,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971852410] [2023-08-30 22:50:50,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:50,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:50,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:50,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:50,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971852410] [2023-08-30 22:50:50,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971852410] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:50:50,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:50:50,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 22:50:50,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521556778] [2023-08-30 22:50:50,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:50:50,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 22:50:50,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:50,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 22:50:50,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 22:50:50,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:50,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 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) [2023-08-30 22:50:50,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:50,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:50,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:51,120 INFO L130 PetriNetUnfolder]: 126/219 cut-off events. [2023-08-30 22:50:51,120 INFO L131 PetriNetUnfolder]: For 533/533 co-relation queries the response was YES. [2023-08-30 22:50:51,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 219 events. 126/219 cut-off events. For 533/533 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 706 event pairs, 19 based on Foata normal form. 4/223 useless extension candidates. Maximal degree in co-relation 772. Up to 86 conditions per place. [2023-08-30 22:50:51,122 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 32 selfloop transitions, 16 changer transitions 11/59 dead transitions. [2023-08-30 22:50:51,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 59 transitions, 425 flow [2023-08-30 22:50:51,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 22:50:51,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 22:50:51,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 529 transitions. [2023-08-30 22:50:51,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47401433691756273 [2023-08-30 22:50:51,131 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 529 transitions. [2023-08-30 22:50:51,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 529 transitions. [2023-08-30 22:50:51,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:51,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 529 transitions. [2023-08-30 22:50:51,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 58.77777777777778) internal successors, (529), 9 states have internal predecessors, (529), 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) [2023-08-30 22:50:51,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 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) [2023-08-30 22:50:51,136 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 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) [2023-08-30 22:50:51,136 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 182 flow. Second operand 9 states and 529 transitions. [2023-08-30 22:50:51,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 59 transitions, 425 flow [2023-08-30 22:50:51,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 59 transitions, 388 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-30 22:50:51,140 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 251 flow [2023-08-30 22:50:51,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=251, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-08-30 22:50:51,141 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 24 predicate places. [2023-08-30 22:50:51,141 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 251 flow [2023-08-30 22:50:51,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 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) [2023-08-30 22:50:51,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:51,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:51,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 22:50:51,142 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:51,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:51,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1601722647, now seen corresponding path program 2 times [2023-08-30 22:50:51,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:51,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421927760] [2023-08-30 22:50:51,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:51,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:51,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:51,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:51,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421927760] [2023-08-30 22:50:51,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421927760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:50:51,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:50:51,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 22:50:51,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750321009] [2023-08-30 22:50:51,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:50:51,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 22:50:51,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:51,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 22:50:51,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 22:50:51,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:51,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 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) [2023-08-30 22:50:51,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:51,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:51,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:51,337 INFO L130 PetriNetUnfolder]: 162/283 cut-off events. [2023-08-30 22:50:51,338 INFO L131 PetriNetUnfolder]: For 789/789 co-relation queries the response was YES. [2023-08-30 22:50:51,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 283 events. 162/283 cut-off events. For 789/789 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 955 event pairs, 22 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1066. Up to 77 conditions per place. [2023-08-30 22:50:51,340 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 38 selfloop transitions, 20 changer transitions 3/61 dead transitions. [2023-08-30 22:50:51,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 497 flow [2023-08-30 22:50:51,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 22:50:51,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 22:50:51,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 470 transitions. [2023-08-30 22:50:51,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4737903225806452 [2023-08-30 22:50:51,342 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 470 transitions. [2023-08-30 22:50:51,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 470 transitions. [2023-08-30 22:50:51,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:51,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 470 transitions. [2023-08-30 22:50:51,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.75) internal successors, (470), 8 states have internal predecessors, (470), 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) [2023-08-30 22:50:51,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 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) [2023-08-30 22:50:51,346 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 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) [2023-08-30 22:50:51,346 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 251 flow. Second operand 8 states and 470 transitions. [2023-08-30 22:50:51,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 497 flow [2023-08-30 22:50:51,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 467 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-30 22:50:51,352 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 344 flow [2023-08-30 22:50:51,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=344, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2023-08-30 22:50:51,353 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 33 predicate places. [2023-08-30 22:50:51,353 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 344 flow [2023-08-30 22:50:51,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 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) [2023-08-30 22:50:51,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:51,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:51,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 22:50:51,364 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:51,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:51,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1572215607, now seen corresponding path program 3 times [2023-08-30 22:50:51,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:51,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493641612] [2023-08-30 22:50:51,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:51,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:51,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:51,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493641612] [2023-08-30 22:50:51,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493641612] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:50:51,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:50:51,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 22:50:51,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329442525] [2023-08-30 22:50:51,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:50:51,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 22:50:51,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:51,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 22:50:51,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 22:50:51,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:51,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 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) [2023-08-30 22:50:51,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:51,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:51,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:51,586 INFO L130 PetriNetUnfolder]: 158/275 cut-off events. [2023-08-30 22:50:51,586 INFO L131 PetriNetUnfolder]: For 1250/1250 co-relation queries the response was YES. [2023-08-30 22:50:51,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1253 conditions, 275 events. 158/275 cut-off events. For 1250/1250 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 935 event pairs, 18 based on Foata normal form. 8/283 useless extension candidates. Maximal degree in co-relation 1225. Up to 65 conditions per place. [2023-08-30 22:50:51,589 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 28 selfloop transitions, 25 changer transitions 10/63 dead transitions. [2023-08-30 22:50:51,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 616 flow [2023-08-30 22:50:51,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 22:50:51,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 22:50:51,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 469 transitions. [2023-08-30 22:50:51,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4727822580645161 [2023-08-30 22:50:51,591 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 469 transitions. [2023-08-30 22:50:51,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 469 transitions. [2023-08-30 22:50:51,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:51,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 469 transitions. [2023-08-30 22:50:51,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.625) internal successors, (469), 8 states have internal predecessors, (469), 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) [2023-08-30 22:50:51,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 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) [2023-08-30 22:50:51,595 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 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) [2023-08-30 22:50:51,595 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 344 flow. Second operand 8 states and 469 transitions. [2023-08-30 22:50:51,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 616 flow [2023-08-30 22:50:51,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 581 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-30 22:50:51,601 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 437 flow [2023-08-30 22:50:51,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=437, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-08-30 22:50:51,604 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 40 predicate places. [2023-08-30 22:50:51,604 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 437 flow [2023-08-30 22:50:51,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 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) [2023-08-30 22:50:51,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:51,608 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:51,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 22:50:51,608 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:51,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:51,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1868187119, now seen corresponding path program 4 times [2023-08-30 22:50:51,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:51,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111996740] [2023-08-30 22:50:51,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:51,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:51,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:51,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111996740] [2023-08-30 22:50:51,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111996740] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:50:51,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536998777] [2023-08-30 22:50:51,718 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 22:50:51,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:51,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:50:51,725 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) [2023-08-30 22:50:51,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 22:50:51,807 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 22:50:51,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:50:51,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 22:50:51,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:50:51,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:51,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:50:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:52,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536998777] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:50:52,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:50:52,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-30 22:50:52,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407888948] [2023-08-30 22:50:52,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:50:52,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 22:50:52,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:52,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 22:50:52,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-30 22:50:52,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:52,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 437 flow. Second operand has 12 states, 12 states have (on average 54.916666666666664) internal successors, (659), 12 states have internal predecessors, (659), 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) [2023-08-30 22:50:52,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:52,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:52,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:52,264 INFO L130 PetriNetUnfolder]: 182/323 cut-off events. [2023-08-30 22:50:52,264 INFO L131 PetriNetUnfolder]: For 2474/2474 co-relation queries the response was YES. [2023-08-30 22:50:52,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1605 conditions, 323 events. 182/323 cut-off events. For 2474/2474 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1094 event pairs, 41 based on Foata normal form. 24/347 useless extension candidates. Maximal degree in co-relation 1574. Up to 181 conditions per place. [2023-08-30 22:50:52,266 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 45 selfloop transitions, 17 changer transitions 19/81 dead transitions. [2023-08-30 22:50:52,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 81 transitions, 873 flow [2023-08-30 22:50:52,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 22:50:52,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 22:50:52,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 701 transitions. [2023-08-30 22:50:52,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47110215053763443 [2023-08-30 22:50:52,269 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 701 transitions. [2023-08-30 22:50:52,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 701 transitions. [2023-08-30 22:50:52,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:52,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 701 transitions. [2023-08-30 22:50:52,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 58.416666666666664) internal successors, (701), 12 states have internal predecessors, (701), 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) [2023-08-30 22:50:52,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 124.0) internal successors, (1612), 13 states have internal predecessors, (1612), 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) [2023-08-30 22:50:52,274 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 124.0) internal successors, (1612), 13 states have internal predecessors, (1612), 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) [2023-08-30 22:50:52,275 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 437 flow. Second operand 12 states and 701 transitions. [2023-08-30 22:50:52,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 81 transitions, 873 flow [2023-08-30 22:50:52,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 81 transitions, 820 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-08-30 22:50:52,282 INFO L231 Difference]: Finished difference. Result has 70 places, 47 transitions, 544 flow [2023-08-30 22:50:52,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=544, PETRI_PLACES=70, PETRI_TRANSITIONS=47} [2023-08-30 22:50:52,283 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 52 predicate places. [2023-08-30 22:50:52,283 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 47 transitions, 544 flow [2023-08-30 22:50:52,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 54.916666666666664) internal successors, (659), 12 states have internal predecessors, (659), 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) [2023-08-30 22:50:52,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:52,284 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:52,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 22:50:52,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:52,490 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:52,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:52,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1881593069, now seen corresponding path program 5 times [2023-08-30 22:50:52,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:52,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891697623] [2023-08-30 22:50:52,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:52,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:52,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:52,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:52,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891697623] [2023-08-30 22:50:52,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891697623] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:50:52,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301403434] [2023-08-30 22:50:52,596 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 22:50:52,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:52,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:50:52,598 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) [2023-08-30 22:50:52,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 22:50:52,665 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 22:50:52,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:50:52,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 22:50:52,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:50:52,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:52,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:50:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:52,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301403434] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:50:52,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:50:52,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 22:50:52,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318908073] [2023-08-30 22:50:52,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:50:52,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 22:50:52,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:52,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 22:50:52,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-30 22:50:52,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:52,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 47 transitions, 544 flow. Second operand has 13 states, 13 states have (on average 54.92307692307692) internal successors, (714), 13 states have internal predecessors, (714), 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) [2023-08-30 22:50:52,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:52,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:52,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:53,291 INFO L130 PetriNetUnfolder]: 244/439 cut-off events. [2023-08-30 22:50:53,292 INFO L131 PetriNetUnfolder]: For 6692/6692 co-relation queries the response was YES. [2023-08-30 22:50:53,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2513 conditions, 439 events. 244/439 cut-off events. For 6692/6692 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1682 event pairs, 30 based on Foata normal form. 28/467 useless extension candidates. Maximal degree in co-relation 2476. Up to 128 conditions per place. [2023-08-30 22:50:53,295 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 46 selfloop transitions, 42 changer transitions 29/117 dead transitions. [2023-08-30 22:50:53,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 117 transitions, 1405 flow [2023-08-30 22:50:53,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 22:50:53,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 22:50:53,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1051 transitions. [2023-08-30 22:50:53,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47087813620071683 [2023-08-30 22:50:53,299 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1051 transitions. [2023-08-30 22:50:53,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1051 transitions. [2023-08-30 22:50:53,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:53,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1051 transitions. [2023-08-30 22:50:53,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.388888888888886) internal successors, (1051), 18 states have internal predecessors, (1051), 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) [2023-08-30 22:50:53,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2023-08-30 22:50:53,306 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2023-08-30 22:50:53,306 INFO L175 Difference]: Start difference. First operand has 70 places, 47 transitions, 544 flow. Second operand 18 states and 1051 transitions. [2023-08-30 22:50:53,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 117 transitions, 1405 flow [2023-08-30 22:50:53,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 117 transitions, 1265 flow, removed 59 selfloop flow, removed 5 redundant places. [2023-08-30 22:50:53,317 INFO L231 Difference]: Finished difference. Result has 92 places, 64 transitions, 898 flow [2023-08-30 22:50:53,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=898, PETRI_PLACES=92, PETRI_TRANSITIONS=64} [2023-08-30 22:50:53,318 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 74 predicate places. [2023-08-30 22:50:53,318 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 64 transitions, 898 flow [2023-08-30 22:50:53,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 54.92307692307692) internal successors, (714), 13 states have internal predecessors, (714), 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) [2023-08-30 22:50:53,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:53,319 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:53,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 22:50:53,524 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,SelfDestructingSolverStorable7 [2023-08-30 22:50:53,525 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:53,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:53,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1657155026, now seen corresponding path program 6 times [2023-08-30 22:50:53,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:53,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525964175] [2023-08-30 22:50:53,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:53,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:53,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:53,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:53,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525964175] [2023-08-30 22:50:53,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525964175] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:50:53,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369484206] [2023-08-30 22:50:53,619 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 22:50:53,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:53,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:50:53,620 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) [2023-08-30 22:50:53,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 22:50:53,691 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 22:50:53,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:50:53,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 22:50:53,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:50:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:53,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:50:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:53,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369484206] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:50:53,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:50:53,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 22:50:53,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539209730] [2023-08-30 22:50:53,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:50:53,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 22:50:53,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:53,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 22:50:53,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-08-30 22:50:53,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:53,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 64 transitions, 898 flow. Second operand has 14 states, 14 states have (on average 54.714285714285715) internal successors, (766), 14 states have internal predecessors, (766), 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) [2023-08-30 22:50:53,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:53,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:53,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:54,224 INFO L130 PetriNetUnfolder]: 328/599 cut-off events. [2023-08-30 22:50:54,224 INFO L131 PetriNetUnfolder]: For 14932/14932 co-relation queries the response was YES. [2023-08-30 22:50:54,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4413 conditions, 599 events. 328/599 cut-off events. For 14932/14932 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2510 event pairs, 23 based on Foata normal form. 24/623 useless extension candidates. Maximal degree in co-relation 4366. Up to 204 conditions per place. [2023-08-30 22:50:54,229 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 56 selfloop transitions, 58 changer transitions 19/133 dead transitions. [2023-08-30 22:50:54,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 133 transitions, 2133 flow [2023-08-30 22:50:54,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 22:50:54,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 22:50:54,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1046 transitions. [2023-08-30 22:50:54,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46863799283154123 [2023-08-30 22:50:54,233 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1046 transitions. [2023-08-30 22:50:54,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1046 transitions. [2023-08-30 22:50:54,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:54,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1046 transitions. [2023-08-30 22:50:54,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.111111111111114) internal successors, (1046), 18 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) [2023-08-30 22:50:54,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2023-08-30 22:50:54,240 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2023-08-30 22:50:54,240 INFO L175 Difference]: Start difference. First operand has 92 places, 64 transitions, 898 flow. Second operand 18 states and 1046 transitions. [2023-08-30 22:50:54,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 133 transitions, 2133 flow [2023-08-30 22:50:54,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 133 transitions, 1847 flow, removed 129 selfloop flow, removed 7 redundant places. [2023-08-30 22:50:54,265 INFO L231 Difference]: Finished difference. Result has 110 places, 80 transitions, 1254 flow [2023-08-30 22:50:54,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1254, PETRI_PLACES=110, PETRI_TRANSITIONS=80} [2023-08-30 22:50:54,266 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 92 predicate places. [2023-08-30 22:50:54,266 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 80 transitions, 1254 flow [2023-08-30 22:50:54,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 54.714285714285715) internal successors, (766), 14 states have internal predecessors, (766), 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) [2023-08-30 22:50:54,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:54,267 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:54,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 22:50:54,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:54,473 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:54,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:54,473 INFO L85 PathProgramCache]: Analyzing trace with hash 929897188, now seen corresponding path program 7 times [2023-08-30 22:50:54,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:54,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474815738] [2023-08-30 22:50:54,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:54,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:54,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:54,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:54,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474815738] [2023-08-30 22:50:54,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474815738] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:50:54,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175309046] [2023-08-30 22:50:54,559 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 22:50:54,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:54,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:50:54,561 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:50:54,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 22:50:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:54,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 22:50:54,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:50:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:54,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:50:54,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:54,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175309046] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:50:54,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:50:54,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 22:50:54,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095295352] [2023-08-30 22:50:54,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:50:54,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 22:50:54,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:54,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 22:50:54,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-30 22:50:54,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:54,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 80 transitions, 1254 flow. Second operand has 14 states, 14 states have (on average 54.785714285714285) internal successors, (767), 14 states have internal predecessors, (767), 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) [2023-08-30 22:50:54,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:54,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:54,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:55,233 INFO L130 PetriNetUnfolder]: 388/707 cut-off events. [2023-08-30 22:50:55,234 INFO L131 PetriNetUnfolder]: For 28896/28896 co-relation queries the response was YES. [2023-08-30 22:50:55,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5907 conditions, 707 events. 388/707 cut-off events. For 28896/28896 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3077 event pairs, 12 based on Foata normal form. 28/735 useless extension candidates. Maximal degree in co-relation 5852. Up to 243 conditions per place. [2023-08-30 22:50:55,241 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 46 selfloop transitions, 84 changer transitions 38/168 dead transitions. [2023-08-30 22:50:55,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 168 transitions, 3020 flow [2023-08-30 22:50:55,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 22:50:55,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 22:50:55,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1282 transitions. [2023-08-30 22:50:55,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46994134897360706 [2023-08-30 22:50:55,245 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1282 transitions. [2023-08-30 22:50:55,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1282 transitions. [2023-08-30 22:50:55,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:55,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1282 transitions. [2023-08-30 22:50:55,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 58.27272727272727) internal successors, (1282), 22 states have internal predecessors, (1282), 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) [2023-08-30 22:50:55,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 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) [2023-08-30 22:50:55,253 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 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) [2023-08-30 22:50:55,253 INFO L175 Difference]: Start difference. First operand has 110 places, 80 transitions, 1254 flow. Second operand 22 states and 1282 transitions. [2023-08-30 22:50:55,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 168 transitions, 3020 flow [2023-08-30 22:50:55,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 168 transitions, 2448 flow, removed 251 selfloop flow, removed 12 redundant places. [2023-08-30 22:50:55,316 INFO L231 Difference]: Finished difference. Result has 130 places, 101 transitions, 1724 flow [2023-08-30 22:50:55,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1724, PETRI_PLACES=130, PETRI_TRANSITIONS=101} [2023-08-30 22:50:55,316 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 112 predicate places. [2023-08-30 22:50:55,317 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 101 transitions, 1724 flow [2023-08-30 22:50:55,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 54.785714285714285) internal successors, (767), 14 states have internal predecessors, (767), 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) [2023-08-30 22:50:55,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:55,317 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:55,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 22:50:55,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:55,523 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:55,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:55,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1150765664, now seen corresponding path program 8 times [2023-08-30 22:50:55,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:55,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345841857] [2023-08-30 22:50:55,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:55,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:55,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:55,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345841857] [2023-08-30 22:50:55,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345841857] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:50:55,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489683473] [2023-08-30 22:50:55,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 22:50:55,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:55,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:50:55,678 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:50:55,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 22:50:55,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 22:50:55,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:50:55,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 22:50:55,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:50:55,806 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:55,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:50:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:55,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489683473] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:50:55,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:50:55,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-08-30 22:50:55,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074471731] [2023-08-30 22:50:55,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:50:55,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 22:50:55,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:55,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 22:50:55,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-08-30 22:50:56,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:56,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 101 transitions, 1724 flow. Second operand has 22 states, 22 states have (on average 54.5) internal successors, (1199), 22 states have internal predecessors, (1199), 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) [2023-08-30 22:50:56,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:56,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:56,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:56,820 INFO L130 PetriNetUnfolder]: 536/955 cut-off events. [2023-08-30 22:50:56,820 INFO L131 PetriNetUnfolder]: For 45023/45023 co-relation queries the response was YES. [2023-08-30 22:50:56,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8855 conditions, 955 events. 536/955 cut-off events. For 45023/45023 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4100 event pairs, 15 based on Foata normal form. 36/991 useless extension candidates. Maximal degree in co-relation 8792. Up to 335 conditions per place. [2023-08-30 22:50:56,830 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 60 selfloop transitions, 121 changer transitions 66/247 dead transitions. [2023-08-30 22:50:56,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 247 transitions, 4988 flow [2023-08-30 22:50:56,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-30 22:50:56,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-30 22:50:56,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2090 transitions. [2023-08-30 22:50:56,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681899641577061 [2023-08-30 22:50:56,837 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2090 transitions. [2023-08-30 22:50:56,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2090 transitions. [2023-08-30 22:50:56,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:56,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2090 transitions. [2023-08-30 22:50:56,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 58.05555555555556) internal successors, (2090), 36 states have internal predecessors, (2090), 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) [2023-08-30 22:50:56,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 124.0) internal successors, (4588), 37 states have internal predecessors, (4588), 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) [2023-08-30 22:50:56,854 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 124.0) internal successors, (4588), 37 states have internal predecessors, (4588), 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) [2023-08-30 22:50:56,854 INFO L175 Difference]: Start difference. First operand has 130 places, 101 transitions, 1724 flow. Second operand 36 states and 2090 transitions. [2023-08-30 22:50:56,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 247 transitions, 4988 flow [2023-08-30 22:50:56,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 247 transitions, 4352 flow, removed 281 selfloop flow, removed 14 redundant places. [2023-08-30 22:50:56,920 INFO L231 Difference]: Finished difference. Result has 169 places, 138 transitions, 2762 flow [2023-08-30 22:50:56,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2762, PETRI_PLACES=169, PETRI_TRANSITIONS=138} [2023-08-30 22:50:56,921 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 151 predicate places. [2023-08-30 22:50:56,921 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 138 transitions, 2762 flow [2023-08-30 22:50:56,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 54.5) internal successors, (1199), 22 states have internal predecessors, (1199), 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) [2023-08-30 22:50:56,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:56,922 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:56,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 22:50:57,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 22:50:57,132 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:57,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:57,132 INFO L85 PathProgramCache]: Analyzing trace with hash 2052641735, now seen corresponding path program 9 times [2023-08-30 22:50:57,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:57,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523407877] [2023-08-30 22:50:57,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:57,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:57,430 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:57,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:57,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523407877] [2023-08-30 22:50:57,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523407877] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:50:57,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567198168] [2023-08-30 22:50:57,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 22:50:57,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:57,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:50:57,432 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:50:57,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 22:50:57,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-30 22:50:57,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:50:57,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 22:50:57,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:50:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:57,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:50:57,836 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:57,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567198168] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:50:57,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:50:57,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 24 [2023-08-30 22:50:57,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777519498] [2023-08-30 22:50:57,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:50:57,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-30 22:50:57,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:57,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-30 22:50:57,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2023-08-30 22:50:57,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:57,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 138 transitions, 2762 flow. Second operand has 26 states, 26 states have (on average 54.46153846153846) internal successors, (1416), 26 states have internal predecessors, (1416), 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) [2023-08-30 22:50:57,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:57,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:57,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:58,561 INFO L130 PetriNetUnfolder]: 664/1211 cut-off events. [2023-08-30 22:50:58,562 INFO L131 PetriNetUnfolder]: For 96771/96771 co-relation queries the response was YES. [2023-08-30 22:50:58,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13940 conditions, 1211 events. 664/1211 cut-off events. For 96771/96771 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5484 event pairs, 102 based on Foata normal form. 32/1243 useless extension candidates. Maximal degree in co-relation 13864. Up to 463 conditions per place. [2023-08-30 22:50:58,577 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 106 selfloop transitions, 96 changer transitions 53/255 dead transitions. [2023-08-30 22:50:58,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 255 transitions, 6364 flow [2023-08-30 22:50:58,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-30 22:50:58,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-30 22:50:58,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1674 transitions. [2023-08-30 22:50:58,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46551724137931033 [2023-08-30 22:50:58,581 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1674 transitions. [2023-08-30 22:50:58,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1674 transitions. [2023-08-30 22:50:58,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:58,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1674 transitions. [2023-08-30 22:50:58,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 57.724137931034484) internal successors, (1674), 29 states have internal predecessors, (1674), 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) [2023-08-30 22:50:58,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 124.0) internal successors, (3720), 30 states have internal predecessors, (3720), 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) [2023-08-30 22:50:58,591 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 124.0) internal successors, (3720), 30 states have internal predecessors, (3720), 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) [2023-08-30 22:50:58,591 INFO L175 Difference]: Start difference. First operand has 169 places, 138 transitions, 2762 flow. Second operand 29 states and 1674 transitions. [2023-08-30 22:50:58,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 255 transitions, 6364 flow [2023-08-30 22:50:58,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 255 transitions, 4882 flow, removed 710 selfloop flow, removed 13 redundant places. [2023-08-30 22:50:58,809 INFO L231 Difference]: Finished difference. Result has 194 places, 170 transitions, 3113 flow [2023-08-30 22:50:58,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1988, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3113, PETRI_PLACES=194, PETRI_TRANSITIONS=170} [2023-08-30 22:50:58,810 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 176 predicate places. [2023-08-30 22:50:58,810 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 170 transitions, 3113 flow [2023-08-30 22:50:58,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 54.46153846153846) internal successors, (1416), 26 states have internal predecessors, (1416), 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) [2023-08-30 22:50:58,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:58,811 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:58,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 22:50:59,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:59,017 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:59,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:59,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1437345109, now seen corresponding path program 10 times [2023-08-30 22:50:59,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:59,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609649427] [2023-08-30 22:50:59,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:59,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:59,255 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:59,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:59,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609649427] [2023-08-30 22:50:59,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609649427] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:50:59,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187949250] [2023-08-30 22:50:59,256 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 22:50:59,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:59,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:50:59,257 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:50:59,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 22:50:59,335 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 22:50:59,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:50:59,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 22:50:59,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:50:59,420 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:59,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:50:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:59,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187949250] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:50:59,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:50:59,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 28 [2023-08-30 22:50:59,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269573892] [2023-08-30 22:50:59,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:50:59,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 22:50:59,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:59,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 22:50:59,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2023-08-30 22:50:59,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:59,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 170 transitions, 3113 flow. Second operand has 30 states, 30 states have (on average 54.4) internal successors, (1632), 30 states have internal predecessors, (1632), 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) [2023-08-30 22:50:59,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:59,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:59,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:00,626 INFO L130 PetriNetUnfolder]: 808/1483 cut-off events. [2023-08-30 22:51:00,626 INFO L131 PetriNetUnfolder]: For 155488/155488 co-relation queries the response was YES. [2023-08-30 22:51:00,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17184 conditions, 1483 events. 808/1483 cut-off events. For 155488/155488 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6848 event pairs, 44 based on Foata normal form. 32/1515 useless extension candidates. Maximal degree in co-relation 17102. Up to 591 conditions per place. [2023-08-30 22:51:00,645 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 73 selfloop transitions, 173 changer transitions 67/313 dead transitions. [2023-08-30 22:51:00,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 313 transitions, 7237 flow [2023-08-30 22:51:00,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-30 22:51:00,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-30 22:51:00,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2080 transitions. [2023-08-30 22:51:00,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659498207885305 [2023-08-30 22:51:00,649 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2080 transitions. [2023-08-30 22:51:00,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2080 transitions. [2023-08-30 22:51:00,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:00,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2080 transitions. [2023-08-30 22:51:00,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 57.77777777777778) internal successors, (2080), 36 states have internal predecessors, (2080), 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) [2023-08-30 22:51:00,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 124.0) internal successors, (4588), 37 states have internal predecessors, (4588), 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) [2023-08-30 22:51:00,715 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 124.0) internal successors, (4588), 37 states have internal predecessors, (4588), 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) [2023-08-30 22:51:00,715 INFO L175 Difference]: Start difference. First operand has 194 places, 170 transitions, 3113 flow. Second operand 36 states and 2080 transitions. [2023-08-30 22:51:00,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 313 transitions, 7237 flow [2023-08-30 22:51:00,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 313 transitions, 6565 flow, removed 304 selfloop flow, removed 11 redundant places. [2023-08-30 22:51:00,988 INFO L231 Difference]: Finished difference. Result has 231 places, 207 transitions, 4118 flow [2023-08-30 22:51:00,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2633, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4118, PETRI_PLACES=231, PETRI_TRANSITIONS=207} [2023-08-30 22:51:00,988 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 213 predicate places. [2023-08-30 22:51:00,989 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 207 transitions, 4118 flow [2023-08-30 22:51:00,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 54.4) internal successors, (1632), 30 states have internal predecessors, (1632), 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) [2023-08-30 22:51:00,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:00,989 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:51:00,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 22:51:01,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:51:01,191 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:51:01,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:01,191 INFO L85 PathProgramCache]: Analyzing trace with hash -162127443, now seen corresponding path program 11 times [2023-08-30 22:51:01,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:01,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770717237] [2023-08-30 22:51:01,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:01,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:01,446 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:01,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:01,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770717237] [2023-08-30 22:51:01,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770717237] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:51:01,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015949307] [2023-08-30 22:51:01,447 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 22:51:01,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:51:01,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:51:01,448 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:51:01,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 22:51:01,530 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-08-30 22:51:01,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:51:01,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 22:51:01,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:51:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:01,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:51:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:01,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015949307] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:51:01,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:51:01,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 24 [2023-08-30 22:51:01,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194734253] [2023-08-30 22:51:01,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:51:01,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-30 22:51:01,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:01,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-30 22:51:01,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2023-08-30 22:51:01,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:51:01,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 207 transitions, 4118 flow. Second operand has 26 states, 26 states have (on average 54.46153846153846) internal successors, (1416), 26 states have internal predecessors, (1416), 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) [2023-08-30 22:51:01,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:01,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:51:01,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:02,969 INFO L130 PetriNetUnfolder]: 928/1687 cut-off events. [2023-08-30 22:51:02,969 INFO L131 PetriNetUnfolder]: For 235833/235833 co-relation queries the response was YES. [2023-08-30 22:51:02,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22177 conditions, 1687 events. 928/1687 cut-off events. For 235833/235833 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 7743 event pairs, 16 based on Foata normal form. 32/1719 useless extension candidates. Maximal degree in co-relation 22081. Up to 675 conditions per place. [2023-08-30 22:51:02,992 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 76 selfloop transitions, 214 changer transitions 75/365 dead transitions. [2023-08-30 22:51:02,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 365 transitions, 9590 flow [2023-08-30 22:51:02,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-30 22:51:02,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-30 22:51:02,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2545 transitions. [2023-08-30 22:51:02,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4664589442815249 [2023-08-30 22:51:02,997 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2545 transitions. [2023-08-30 22:51:02,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2545 transitions. [2023-08-30 22:51:02,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:02,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2545 transitions. [2023-08-30 22:51:03,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 57.84090909090909) internal successors, (2545), 44 states have internal predecessors, (2545), 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) [2023-08-30 22:51:03,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 124.0) internal successors, (5580), 45 states have internal predecessors, (5580), 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) [2023-08-30 22:51:03,009 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 124.0) internal successors, (5580), 45 states have internal predecessors, (5580), 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) [2023-08-30 22:51:03,010 INFO L175 Difference]: Start difference. First operand has 231 places, 207 transitions, 4118 flow. Second operand 44 states and 2545 transitions. [2023-08-30 22:51:03,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 365 transitions, 9590 flow [2023-08-30 22:51:03,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 365 transitions, 8810 flow, removed 301 selfloop flow, removed 17 redundant places. [2023-08-30 22:51:03,280 INFO L231 Difference]: Finished difference. Result has 273 places, 234 transitions, 5349 flow [2023-08-30 22:51:03,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3340, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5349, PETRI_PLACES=273, PETRI_TRANSITIONS=234} [2023-08-30 22:51:03,281 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 255 predicate places. [2023-08-30 22:51:03,281 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 234 transitions, 5349 flow [2023-08-30 22:51:03,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 54.46153846153846) internal successors, (1416), 26 states have internal predecessors, (1416), 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) [2023-08-30 22:51:03,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:03,282 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:51:03,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 22:51:03,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 22:51:03,483 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:51:03,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:03,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1774196837, now seen corresponding path program 12 times [2023-08-30 22:51:03,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:03,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696971996] [2023-08-30 22:51:03,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:03,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:03,783 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:03,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:03,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696971996] [2023-08-30 22:51:03,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696971996] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:51:03,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752956271] [2023-08-30 22:51:03,784 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 22:51:03,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:51:03,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:51:03,785 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:51:03,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 22:51:03,869 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-08-30 22:51:03,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:51:03,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 22:51:03,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:51:03,939 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:03,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:51:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:04,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752956271] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:51:04,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:51:04,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 28 [2023-08-30 22:51:04,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114325588] [2023-08-30 22:51:04,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:51:04,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 22:51:04,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:04,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 22:51:04,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2023-08-30 22:51:04,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:51:04,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 234 transitions, 5349 flow. Second operand has 30 states, 30 states have (on average 54.4) internal successors, (1632), 30 states have internal predecessors, (1632), 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) [2023-08-30 22:51:04,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:04,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:51:04,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:05,804 INFO L130 PetriNetUnfolder]: 1040/1887 cut-off events. [2023-08-30 22:51:05,804 INFO L131 PetriNetUnfolder]: For 379876/379876 co-relation queries the response was YES. [2023-08-30 22:51:05,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28674 conditions, 1887 events. 1040/1887 cut-off events. For 379876/379876 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8809 event pairs, 17 based on Foata normal form. 28/1915 useless extension candidates. Maximal degree in co-relation 28562. Up to 755 conditions per place. [2023-08-30 22:51:05,835 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 79 selfloop transitions, 247 changer transitions 96/422 dead transitions. [2023-08-30 22:51:05,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 422 transitions, 12533 flow [2023-08-30 22:51:05,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-08-30 22:51:05,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-08-30 22:51:05,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 2949 transitions. [2023-08-30 22:51:05,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4663187855787476 [2023-08-30 22:51:05,845 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 2949 transitions. [2023-08-30 22:51:05,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 2949 transitions. [2023-08-30 22:51:05,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:05,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 2949 transitions. [2023-08-30 22:51:05,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 57.8235294117647) internal successors, (2949), 51 states have internal predecessors, (2949), 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) [2023-08-30 22:51:05,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 124.0) internal successors, (6448), 52 states have internal predecessors, (6448), 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) [2023-08-30 22:51:05,858 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 124.0) internal successors, (6448), 52 states have internal predecessors, (6448), 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) [2023-08-30 22:51:05,859 INFO L175 Difference]: Start difference. First operand has 273 places, 234 transitions, 5349 flow. Second operand 51 states and 2949 transitions. [2023-08-30 22:51:05,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 422 transitions, 12533 flow [2023-08-30 22:51:06,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 422 transitions, 10486 flow, removed 883 selfloop flow, removed 28 redundant places. [2023-08-30 22:51:06,407 INFO L231 Difference]: Finished difference. Result has 305 places, 266 transitions, 5711 flow [2023-08-30 22:51:06,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3922, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=5711, PETRI_PLACES=305, PETRI_TRANSITIONS=266} [2023-08-30 22:51:06,408 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 287 predicate places. [2023-08-30 22:51:06,408 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 266 transitions, 5711 flow [2023-08-30 22:51:06,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 54.4) internal successors, (1632), 30 states have internal predecessors, (1632), 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) [2023-08-30 22:51:06,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:06,409 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:51:06,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 22:51:06,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 22:51:06,613 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:51:06,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:06,613 INFO L85 PathProgramCache]: Analyzing trace with hash -984748001, now seen corresponding path program 13 times [2023-08-30 22:51:06,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:06,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752408025] [2023-08-30 22:51:06,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:06,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:06,771 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 90 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:06,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:06,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752408025] [2023-08-30 22:51:06,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752408025] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:51:06,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264455222] [2023-08-30 22:51:06,772 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 22:51:06,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:51:06,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:51:06,773 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:51:06,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 22:51:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:06,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 22:51:06,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:51:06,886 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:06,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 22:51:06,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264455222] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:51:06,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 22:51:06,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 14 [2023-08-30 22:51:06,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321755004] [2023-08-30 22:51:06,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:51:06,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 22:51:06,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:06,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 22:51:06,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2023-08-30 22:51:06,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 124 [2023-08-30 22:51:06,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 266 transitions, 5711 flow. Second operand has 13 states, 13 states have (on average 58.23076923076923) internal successors, (757), 13 states have internal predecessors, (757), 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) [2023-08-30 22:51:06,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:06,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 124 [2023-08-30 22:51:06,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:08,874 INFO L130 PetriNetUnfolder]: 4503/7073 cut-off events. [2023-08-30 22:51:08,875 INFO L131 PetriNetUnfolder]: For 1559366/1559366 co-relation queries the response was YES. [2023-08-30 22:51:08,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100155 conditions, 7073 events. 4503/7073 cut-off events. For 1559366/1559366 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 38784 event pairs, 102 based on Foata normal form. 380/7453 useless extension candidates. Maximal degree in co-relation 100036. Up to 3450 conditions per place. [2023-08-30 22:51:08,930 INFO L137 encePairwiseOnDemand]: 121/124 looper letters, 0 selfloop transitions, 0 changer transitions 1332/1332 dead transitions. [2023-08-30 22:51:08,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 1332 transitions, 27305 flow [2023-08-30 22:51:08,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 22:51:08,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 22:51:08,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 825 transitions. [2023-08-30 22:51:08,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117866004962779 [2023-08-30 22:51:08,933 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 825 transitions. [2023-08-30 22:51:08,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 825 transitions. [2023-08-30 22:51:08,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:08,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 825 transitions. [2023-08-30 22:51:08,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 63.46153846153846) internal successors, (825), 13 states have internal predecessors, (825), 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) [2023-08-30 22:51:08,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 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) [2023-08-30 22:51:08,938 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 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) [2023-08-30 22:51:08,938 INFO L175 Difference]: Start difference. First operand has 305 places, 266 transitions, 5711 flow. Second operand 13 states and 825 transitions. [2023-08-30 22:51:08,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 1332 transitions, 27305 flow [2023-08-30 22:51:10,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 1332 transitions, 24302 flow, removed 301 selfloop flow, removed 44 redundant places. [2023-08-30 22:51:10,554 INFO L231 Difference]: Finished difference. Result has 271 places, 0 transitions, 0 flow [2023-08-30 22:51:10,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4038, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=271, PETRI_TRANSITIONS=0} [2023-08-30 22:51:10,554 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 253 predicate places. [2023-08-30 22:51:10,555 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 0 transitions, 0 flow [2023-08-30 22:51:10,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 58.23076923076923) internal successors, (757), 13 states have internal predecessors, (757), 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) [2023-08-30 22:51:10,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-30 22:51:10,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-30 22:51:10,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-30 22:51:10,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 22:51:10,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 22:51:10,761 INFO L445 BasicCegarLoop]: Path program histogram: [13, 2, 1] [2023-08-30 22:51:10,764 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 22:51:10,764 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 22:51:10,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 10:51:10 BasicIcfg [2023-08-30 22:51:10,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 22:51:10,767 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 22:51:10,767 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 22:51:10,767 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 22:51:10,767 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:50:47" (3/4) ... [2023-08-30 22:51:10,769 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 22:51:10,773 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-08-30 22:51:10,773 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-08-30 22:51:10,776 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-08-30 22:51:10,776 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-30 22:51:10,776 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 22:51:10,776 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 22:51:10,799 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 22:51:10,799 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 22:51:10,800 INFO L158 Benchmark]: Toolchain (without parser) took 24121.61ms. Allocated memory was 62.9MB in the beginning and 1.2GB in the end (delta: 1.2GB). Free memory was 39.3MB in the beginning and 908.4MB in the end (delta: -869.1MB). Peak memory consumption was 305.1MB. Max. memory is 16.1GB. [2023-08-30 22:51:10,800 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 50.3MB. Free memory was 28.9MB in the beginning and 28.8MB in the end (delta: 27.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 22:51:10,800 INFO L158 Benchmark]: CACSL2BoogieTranslator took 440.40ms. Allocated memory is still 62.9MB. Free memory was 39.0MB in the beginning and 35.4MB in the end (delta: 3.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 22:51:10,801 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.81ms. Allocated memory is still 62.9MB. Free memory was 35.4MB in the beginning and 33.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 22:51:10,801 INFO L158 Benchmark]: Boogie Preprocessor took 44.16ms. Allocated memory is still 62.9MB. Free memory was 33.5MB in the beginning and 32.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 22:51:10,801 INFO L158 Benchmark]: RCFGBuilder took 397.56ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 31.8MB in the beginning and 50.1MB in the end (delta: -18.2MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2023-08-30 22:51:10,801 INFO L158 Benchmark]: TraceAbstraction took 23162.22ms. Allocated memory was 77.6MB in the beginning and 1.2GB in the end (delta: 1.2GB). Free memory was 49.4MB in the beginning and 911.5MB in the end (delta: -862.1MB). Peak memory consumption was 529.3MB. Max. memory is 16.1GB. [2023-08-30 22:51:10,802 INFO L158 Benchmark]: Witness Printer took 32.68ms. Allocated memory is still 1.2GB. Free memory was 911.5MB in the beginning and 908.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 22:51:10,804 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 50.3MB. Free memory was 28.9MB in the beginning and 28.8MB in the end (delta: 27.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 440.40ms. Allocated memory is still 62.9MB. Free memory was 39.0MB in the beginning and 35.4MB in the end (delta: 3.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.81ms. Allocated memory is still 62.9MB. Free memory was 35.4MB in the beginning and 33.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.16ms. Allocated memory is still 62.9MB. Free memory was 33.5MB in the beginning and 32.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 397.56ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 31.8MB in the beginning and 50.1MB in the end (delta: -18.2MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * TraceAbstraction took 23162.22ms. Allocated memory was 77.6MB in the beginning and 1.2GB in the end (delta: 1.2GB). Free memory was 49.4MB in the beginning and 911.5MB in the end (delta: -862.1MB). Peak memory consumption was 529.3MB. Max. memory is 16.1GB. * Witness Printer took 32.68ms. Allocated memory is still 1.2GB. Free memory was 911.5MB in the beginning and 908.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 66 PlacesBefore, 18 PlacesAfterwards, 64 TransitionsBefore, 14 TransitionsAfterwards, 1078 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 58 TotalNumberOfCompositions, 999 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 856, independent: 829, independent conditional: 0, independent unconditional: 829, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 590, independent: 578, independent conditional: 0, independent unconditional: 578, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 856, independent: 251, independent conditional: 0, independent unconditional: 251, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 590, unknown conditional: 0, unknown unconditional: 590] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 10, Positive conditional cache size: 0, Positive unconditional cache size: 10, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 722]: 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, 84 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: 23.1s, OverallIterations: 16, TraceHistogramMax: 11, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 13.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3661 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3568 mSDsluCounter, 520 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 506 mSDsCounter, 378 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3766 IncrementalHoareTripleChecker+Invalid, 4144 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 378 mSolverCounterUnsat, 14 mSDtfsCounter, 3766 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 697 GetRequests, 218 SyntacticMatches, 35 SemanticMatches, 444 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6135 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5711occurred in iteration=15, InterpolantAutomatonStates: 319, 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, 0.4s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 420 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 540 ConstructedInterpolants, 0 QuantifiedInterpolants, 2196 SizeOfPredicates, 83 NumberOfNonLiveVariables, 1620 ConjunctsInSsa, 149 ConjunctsInUnsatCore, 35 InterpolantComputations, 7 PerfectInterpolantSequences, 190/875 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! [2023-08-30 22:51:10,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE