./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 09:53:15,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:53:15,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:53:15,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:53:15,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:53:15,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:53:15,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:53:15,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:53:15,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:53:15,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:53:15,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:53:15,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:53:15,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:53:15,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:53:15,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:53:15,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:53:15,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:53:15,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:53:15,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:53:15,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:53:15,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:53:15,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:53:15,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:53:15,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:53:15,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:53:15,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:53:15,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:53:15,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:53:15,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:53:15,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:53:15,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:53:15,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:53:15,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:53:15,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:53:15,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:53:15,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:53:15,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:53:15,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:53:15,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:53:15,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:53:15,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:53:15,614 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:53:15,646 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:53:15,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:53:15,647 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:53:15,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:53:15,648 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:53:15,648 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:53:15,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:53:15,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:53:15,649 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:53:15,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:53:15,650 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:53:15,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:53:15,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:53:15,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:53:15,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:53:15,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:53:15,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:53:15,652 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:53:15,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:53:15,652 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:53:15,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:53:15,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:53:15,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:53:15,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:53:15,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:53:15,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:53:15,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:53:15,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:53:15,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:53:15,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:53:15,654 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:53:15,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:53:15,655 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:53:15,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:53:15,655 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:53:15,655 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:53:15,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:53:15,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:53:16,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:53:16,003 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:53:16,003 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:53:16,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2023-09-01 09:53:17,122 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:53:17,378 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:53:17,379 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2023-09-01 09:53:17,407 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bedc63d88/41daefcea1a1493a9690eb65a542ed35/FLAGd9e437327 [2023-09-01 09:53:17,425 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bedc63d88/41daefcea1a1493a9690eb65a542ed35 [2023-09-01 09:53:17,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:53:17,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:53:17,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:53:17,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:53:17,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:53:17,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:53:17" (1/1) ... [2023-09-01 09:53:17,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a97bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:17, skipping insertion in model container [2023-09-01 09:53:17,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:53:17" (1/1) ... [2023-09-01 09:53:17,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:53:17,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:53:17,683 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i[987,1000] [2023-09-01 09:53:17,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:53:17,962 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:53:17,972 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i[987,1000] [2023-09-01 09:53:18,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:53:18,041 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:53:18,041 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:53:18,047 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:53:18,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:18 WrapperNode [2023-09-01 09:53:18,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:53:18,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:53:18,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:53:18,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:53:18,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:18" (1/1) ... [2023-09-01 09:53:18,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:18" (1/1) ... [2023-09-01 09:53:18,109 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 209 [2023-09-01 09:53:18,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:53:18,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:53:18,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:53:18,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:53:18,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:18" (1/1) ... [2023-09-01 09:53:18,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:18" (1/1) ... [2023-09-01 09:53:18,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:18" (1/1) ... [2023-09-01 09:53:18,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:18" (1/1) ... [2023-09-01 09:53:18,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:18" (1/1) ... [2023-09-01 09:53:18,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:18" (1/1) ... [2023-09-01 09:53:18,139 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:18" (1/1) ... [2023-09-01 09:53:18,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:18" (1/1) ... [2023-09-01 09:53:18,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:53:18,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:53:18,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:53:18,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:53:18,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:18" (1/1) ... [2023-09-01 09:53:18,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:53:18,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:53:18,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 09:53:18,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 09:53:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:53:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 09:53:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:53:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:53:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:53:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-09-01 09:53:18,239 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-09-01 09:53:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-09-01 09:53:18,240 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-09-01 09:53:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:53:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 09:53:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:53:18,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:53:18,242 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 09:53:18,423 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:53:18,425 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:53:18,847 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:53:19,079 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:53:19,079 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 09:53:19,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:53:19 BoogieIcfgContainer [2023-09-01 09:53:19,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:53:19,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:53:19,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:53:19,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:53:19,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:53:17" (1/3) ... [2023-09-01 09:53:19,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ed33eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:53:19, skipping insertion in model container [2023-09-01 09:53:19,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:18" (2/3) ... [2023-09-01 09:53:19,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ed33eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:53:19, skipping insertion in model container [2023-09-01 09:53:19,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:53:19" (3/3) ... [2023-09-01 09:53:19,091 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2023-09-01 09:53:19,099 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:53:19,108 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:53:19,109 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-09-01 09:53:19,109 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:53:19,165 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 09:53:19,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 107 transitions, 224 flow [2023-09-01 09:53:19,261 INFO L130 PetriNetUnfolder]: 2/105 cut-off events. [2023-09-01 09:53:19,261 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:53:19,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 105 events. 2/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-09-01 09:53:19,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 107 transitions, 224 flow [2023-09-01 09:53:19,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 105 transitions, 216 flow [2023-09-01 09:53:19,275 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:53:19,287 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 105 transitions, 216 flow [2023-09-01 09:53:19,290 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 105 transitions, 216 flow [2023-09-01 09:53:19,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 105 transitions, 216 flow [2023-09-01 09:53:19,333 INFO L130 PetriNetUnfolder]: 2/105 cut-off events. [2023-09-01 09:53:19,333 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:53:19,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 105 events. 2/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-09-01 09:53:19,336 INFO L119 LiptonReduction]: Number of co-enabled transitions 1314 [2023-09-01 09:53:24,377 INFO L134 LiptonReduction]: Checked pairs total: 4349 [2023-09-01 09:53:24,378 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-09-01 09:53:24,392 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:53:24,397 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;@69d34df1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:53:24,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-09-01 09:53:24,401 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-09-01 09:53:24,402 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:53:24,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:24,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 09:53:24,403 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 09:53:24,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:24,408 INFO L85 PathProgramCache]: Analyzing trace with hash 599221769, now seen corresponding path program 1 times [2023-09-01 09:53:24,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:24,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241560521] [2023-09-01 09:53:24,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:24,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:24,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:53:24,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:24,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241560521] [2023-09-01 09:53:24,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241560521] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:24,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:24,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:53:24,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309318067] [2023-09-01 09:53:24,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:24,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:53:24,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:24,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:53:24,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:53:24,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 203 [2023-09-01 09:53:24,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:24,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:24,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 203 [2023-09-01 09:53:24,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:25,155 INFO L130 PetriNetUnfolder]: 373/626 cut-off events. [2023-09-01 09:53:25,155 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 09:53:25,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 626 events. 373/626 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2526 event pairs, 30 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 1260. Up to 554 conditions per place. [2023-09-01 09:53:25,165 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 27 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-09-01 09:53:25,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 122 flow [2023-09-01 09:53:25,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:53:25,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:53:25,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-09-01 09:53:25,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876847290640394 [2023-09-01 09:53:25,187 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-09-01 09:53:25,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-09-01 09:53:25,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:25,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-09-01 09:53:25,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:25,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:25,205 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:25,207 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 48 flow. Second operand 3 states and 297 transitions. [2023-09-01 09:53:25,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 122 flow [2023-09-01 09:53:25,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:53:25,212 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 48 flow [2023-09-01 09:53:25,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-09-01 09:53:25,217 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-09-01 09:53:25,217 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 48 flow [2023-09-01 09:53:25,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:25,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:25,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 09:53:25,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:53:25,220 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 09:53:25,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:25,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1396006180, now seen corresponding path program 1 times [2023-09-01 09:53:25,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:25,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070412110] [2023-09-01 09:53:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:25,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:25,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:53:25,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:25,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070412110] [2023-09-01 09:53:25,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070412110] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:25,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:25,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:53:25,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732594292] [2023-09-01 09:53:25,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:25,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:53:25,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:25,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:53:25,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:53:25,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 203 [2023-09-01 09:53:25,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 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) [2023-09-01 09:53:25,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:25,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 203 [2023-09-01 09:53:25,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:25,558 INFO L130 PetriNetUnfolder]: 324/547 cut-off events. [2023-09-01 09:53:25,559 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-09-01 09:53:25,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 547 events. 324/547 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2057 event pairs, 79 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 1132. Up to 396 conditions per place. [2023-09-01 09:53:25,562 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 24 selfloop transitions, 2 changer transitions 2/28 dead transitions. [2023-09-01 09:53:25,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 120 flow [2023-09-01 09:53:25,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:53:25,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:53:25,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-09-01 09:53:25,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4860426929392447 [2023-09-01 09:53:25,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-09-01 09:53:25,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-09-01 09:53:25,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:25,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-09-01 09:53:25,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:25,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:25,568 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:25,568 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 48 flow. Second operand 3 states and 296 transitions. [2023-09-01 09:53:25,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 120 flow [2023-09-01 09:53:25,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:53:25,569 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 44 flow [2023-09-01 09:53:25,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-09-01 09:53:25,570 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -2 predicate places. [2023-09-01 09:53:25,570 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 44 flow [2023-09-01 09:53:25,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 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) [2023-09-01 09:53:25,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:25,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:25,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 09:53:25,571 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 09:53:25,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:25,572 INFO L85 PathProgramCache]: Analyzing trace with hash 326571041, now seen corresponding path program 1 times [2023-09-01 09:53:25,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:25,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994786357] [2023-09-01 09:53:25,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:25,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:26,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:53:26,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:26,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994786357] [2023-09-01 09:53:26,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994786357] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:26,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:26,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:53:26,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496657150] [2023-09-01 09:53:26,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:26,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:53:26,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:26,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:53:26,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:53:26,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 203 [2023-09-01 09:53:26,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:26,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:26,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 203 [2023-09-01 09:53:26,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:26,522 INFO L130 PetriNetUnfolder]: 220/383 cut-off events. [2023-09-01 09:53:26,523 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-09-01 09:53:26,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 383 events. 220/383 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1271 event pairs, 92 based on Foata normal form. 18/401 useless extension candidates. Maximal degree in co-relation 792. Up to 243 conditions per place. [2023-09-01 09:53:26,525 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-09-01 09:53:26,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 108 flow [2023-09-01 09:53:26,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:53:26,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:53:26,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-09-01 09:53:26,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.451559934318555 [2023-09-01 09:53:26,527 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-09-01 09:53:26,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-09-01 09:53:26,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:26,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-09-01 09:53:26,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:26,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:26,531 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:26,531 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 44 flow. Second operand 3 states and 275 transitions. [2023-09-01 09:53:26,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 108 flow [2023-09-01 09:53:26,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:53:26,533 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 48 flow [2023-09-01 09:53:26,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-09-01 09:53:26,533 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -2 predicate places. [2023-09-01 09:53:26,534 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 48 flow [2023-09-01 09:53:26,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:26,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:26,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:26,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 09:53:26,535 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 09:53:26,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:26,535 INFO L85 PathProgramCache]: Analyzing trace with hash -705669376, now seen corresponding path program 1 times [2023-09-01 09:53:26,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:26,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942995688] [2023-09-01 09:53:26,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:26,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:26,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:53:26,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:26,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942995688] [2023-09-01 09:53:26,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942995688] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:26,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:26,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:53:26,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786421280] [2023-09-01 09:53:26,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:26,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:53:26,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:26,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:53:26,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:53:26,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 203 [2023-09-01 09:53:26,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:26,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:26,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 203 [2023-09-01 09:53:26,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:27,002 INFO L130 PetriNetUnfolder]: 199/350 cut-off events. [2023-09-01 09:53:27,003 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-09-01 09:53:27,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 350 events. 199/350 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1237 event pairs, 88 based on Foata normal form. 12/362 useless extension candidates. Maximal degree in co-relation 756. Up to 201 conditions per place. [2023-09-01 09:53:27,020 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 26 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-09-01 09:53:27,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 129 flow [2023-09-01 09:53:27,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:53:27,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:53:27,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-09-01 09:53:27,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4860426929392447 [2023-09-01 09:53:27,024 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-09-01 09:53:27,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-09-01 09:53:27,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:27,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-09-01 09:53:27,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:27,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:27,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:27,027 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 48 flow. Second operand 3 states and 296 transitions. [2023-09-01 09:53:27,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 129 flow [2023-09-01 09:53:27,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 123 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:53:27,028 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 52 flow [2023-09-01 09:53:27,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-09-01 09:53:27,029 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-09-01 09:53:27,029 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 52 flow [2023-09-01 09:53:27,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:27,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:27,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:27,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 09:53:27,030 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 09:53:27,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:27,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1604901205, now seen corresponding path program 1 times [2023-09-01 09:53:27,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:27,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576352632] [2023-09-01 09:53:27,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:27,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:28,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:53:28,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:28,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576352632] [2023-09-01 09:53:28,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576352632] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:28,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:28,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 09:53:28,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911290248] [2023-09-01 09:53:28,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:28,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 09:53:28,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:28,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 09:53:28,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 09:53:28,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 203 [2023-09-01 09:53:28,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 52 flow. Second operand has 8 states, 8 states have (on average 78.625) internal successors, (629), 8 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:28,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:28,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 203 [2023-09-01 09:53:28,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:29,316 INFO L130 PetriNetUnfolder]: 290/526 cut-off events. [2023-09-01 09:53:29,316 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2023-09-01 09:53:29,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1214 conditions, 526 events. 290/526 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2127 event pairs, 33 based on Foata normal form. 4/530 useless extension candidates. Maximal degree in co-relation 1202. Up to 240 conditions per place. [2023-09-01 09:53:29,319 INFO L137 encePairwiseOnDemand]: 191/203 looper letters, 53 selfloop transitions, 28 changer transitions 0/81 dead transitions. [2023-09-01 09:53:29,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 81 transitions, 363 flow [2023-09-01 09:53:29,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 09:53:29,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 09:53:29,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 929 transitions. [2023-09-01 09:53:29,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41603224361845054 [2023-09-01 09:53:29,323 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 929 transitions. [2023-09-01 09:53:29,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 929 transitions. [2023-09-01 09:53:29,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:29,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 929 transitions. [2023-09-01 09:53:29,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.45454545454545) internal successors, (929), 11 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:29,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:29,331 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:29,331 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 52 flow. Second operand 11 states and 929 transitions. [2023-09-01 09:53:29,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 81 transitions, 363 flow [2023-09-01 09:53:29,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 81 transitions, 351 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:53:29,334 INFO L231 Difference]: Finished difference. Result has 42 places, 47 transitions, 253 flow [2023-09-01 09:53:29,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=253, PETRI_PLACES=42, PETRI_TRANSITIONS=47} [2023-09-01 09:53:29,335 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 14 predicate places. [2023-09-01 09:53:29,335 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 47 transitions, 253 flow [2023-09-01 09:53:29,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 78.625) internal successors, (629), 8 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:29,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:29,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:29,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 09:53:29,336 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 09:53:29,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:29,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1730083433, now seen corresponding path program 2 times [2023-09-01 09:53:29,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:29,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678000937] [2023-09-01 09:53:29,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:29,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:53:30,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:30,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678000937] [2023-09-01 09:53:30,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678000937] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:30,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:30,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 09:53:30,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419104699] [2023-09-01 09:53:30,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:30,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 09:53:30,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:30,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 09:53:30,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-09-01 09:53:30,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 203 [2023-09-01 09:53:30,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 47 transitions, 253 flow. Second operand has 7 states, 7 states have (on average 88.85714285714286) internal successors, (622), 7 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:30,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:30,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 203 [2023-09-01 09:53:30,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:30,951 INFO L130 PetriNetUnfolder]: 361/655 cut-off events. [2023-09-01 09:53:30,951 INFO L131 PetriNetUnfolder]: For 1039/1039 co-relation queries the response was YES. [2023-09-01 09:53:30,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2402 conditions, 655 events. 361/655 cut-off events. For 1039/1039 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2891 event pairs, 63 based on Foata normal form. 6/661 useless extension candidates. Maximal degree in co-relation 2383. Up to 502 conditions per place. [2023-09-01 09:53:30,957 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 66 selfloop transitions, 19 changer transitions 0/85 dead transitions. [2023-09-01 09:53:30,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 85 transitions, 617 flow [2023-09-01 09:53:30,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:53:30,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:53:30,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 475 transitions. [2023-09-01 09:53:30,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46798029556650245 [2023-09-01 09:53:30,959 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 475 transitions. [2023-09-01 09:53:30,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 475 transitions. [2023-09-01 09:53:30,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:30,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 475 transitions. [2023-09-01 09:53:30,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:30,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:30,963 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:30,963 INFO L175 Difference]: Start difference. First operand has 42 places, 47 transitions, 253 flow. Second operand 5 states and 475 transitions. [2023-09-01 09:53:30,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 85 transitions, 617 flow [2023-09-01 09:53:30,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 85 transitions, 617 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 09:53:30,969 INFO L231 Difference]: Finished difference. Result has 48 places, 62 transitions, 420 flow [2023-09-01 09:53:30,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=48, PETRI_TRANSITIONS=62} [2023-09-01 09:53:30,970 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 20 predicate places. [2023-09-01 09:53:30,970 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 62 transitions, 420 flow [2023-09-01 09:53:30,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.85714285714286) internal successors, (622), 7 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:30,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:30,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:30,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 09:53:30,972 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 09:53:30,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:30,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1857559315, now seen corresponding path program 3 times [2023-09-01 09:53:30,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:30,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523088038] [2023-09-01 09:53:30,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:30,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:53:31,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:31,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523088038] [2023-09-01 09:53:31,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523088038] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:31,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:31,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 09:53:31,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106320096] [2023-09-01 09:53:31,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:31,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 09:53:31,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:31,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 09:53:31,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-09-01 09:53:31,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 203 [2023-09-01 09:53:31,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 62 transitions, 420 flow. Second operand has 8 states, 8 states have (on average 86.625) internal successors, (693), 8 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:31,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:31,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 203 [2023-09-01 09:53:31,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:32,183 INFO L130 PetriNetUnfolder]: 385/695 cut-off events. [2023-09-01 09:53:32,183 INFO L131 PetriNetUnfolder]: For 1529/1529 co-relation queries the response was YES. [2023-09-01 09:53:32,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2891 conditions, 695 events. 385/695 cut-off events. For 1529/1529 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3126 event pairs, 33 based on Foata normal form. 2/697 useless extension candidates. Maximal degree in co-relation 2868. Up to 464 conditions per place. [2023-09-01 09:53:32,190 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 71 selfloop transitions, 35 changer transitions 0/106 dead transitions. [2023-09-01 09:53:32,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 106 transitions, 881 flow [2023-09-01 09:53:32,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:53:32,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:53:32,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 557 transitions. [2023-09-01 09:53:32,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573070607553366 [2023-09-01 09:53:32,193 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 557 transitions. [2023-09-01 09:53:32,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 557 transitions. [2023-09-01 09:53:32,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:32,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 557 transitions. [2023-09-01 09:53:32,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:32,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:32,197 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:32,197 INFO L175 Difference]: Start difference. First operand has 48 places, 62 transitions, 420 flow. Second operand 6 states and 557 transitions. [2023-09-01 09:53:32,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 106 transitions, 881 flow [2023-09-01 09:53:32,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 106 transitions, 862 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 09:53:32,207 INFO L231 Difference]: Finished difference. Result has 54 places, 76 transitions, 625 flow [2023-09-01 09:53:32,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=625, PETRI_PLACES=54, PETRI_TRANSITIONS=76} [2023-09-01 09:53:32,208 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 26 predicate places. [2023-09-01 09:53:32,208 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 76 transitions, 625 flow [2023-09-01 09:53:32,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 86.625) internal successors, (693), 8 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:32,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:32,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:32,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 09:53:32,209 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 09:53:32,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:32,210 INFO L85 PathProgramCache]: Analyzing trace with hash -134657145, now seen corresponding path program 4 times [2023-09-01 09:53:32,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:32,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623574569] [2023-09-01 09:53:32,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:32,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:33,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:53:33,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:33,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623574569] [2023-09-01 09:53:33,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623574569] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:33,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:33,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 09:53:33,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952532583] [2023-09-01 09:53:33,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:33,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 09:53:33,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:33,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 09:53:33,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-09-01 09:53:33,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 203 [2023-09-01 09:53:33,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 76 transitions, 625 flow. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:33,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:33,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 203 [2023-09-01 09:53:33,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:33,746 INFO L130 PetriNetUnfolder]: 457/828 cut-off events. [2023-09-01 09:53:33,747 INFO L131 PetriNetUnfolder]: For 2582/2582 co-relation queries the response was YES. [2023-09-01 09:53:33,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3802 conditions, 828 events. 457/828 cut-off events. For 2582/2582 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3957 event pairs, 131 based on Foata normal form. 6/834 useless extension candidates. Maximal degree in co-relation 3776. Up to 611 conditions per place. [2023-09-01 09:53:33,755 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 103 selfloop transitions, 27 changer transitions 0/130 dead transitions. [2023-09-01 09:53:33,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 130 transitions, 1227 flow [2023-09-01 09:53:33,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:53:33,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:53:33,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 618 transitions. [2023-09-01 09:53:33,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43490499648135117 [2023-09-01 09:53:33,758 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 618 transitions. [2023-09-01 09:53:33,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 618 transitions. [2023-09-01 09:53:33,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:33,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 618 transitions. [2023-09-01 09:53:33,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:33,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:33,763 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:33,763 INFO L175 Difference]: Start difference. First operand has 54 places, 76 transitions, 625 flow. Second operand 7 states and 618 transitions. [2023-09-01 09:53:33,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 130 transitions, 1227 flow [2023-09-01 09:53:33,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 130 transitions, 1210 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-09-01 09:53:33,775 INFO L231 Difference]: Finished difference. Result has 62 places, 86 transitions, 800 flow [2023-09-01 09:53:33,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=800, PETRI_PLACES=62, PETRI_TRANSITIONS=86} [2023-09-01 09:53:33,778 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 34 predicate places. [2023-09-01 09:53:33,778 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 86 transitions, 800 flow [2023-09-01 09:53:33,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:33,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:33,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:33,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 09:53:33,779 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 09:53:33,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:33,780 INFO L85 PathProgramCache]: Analyzing trace with hash 635368993, now seen corresponding path program 5 times [2023-09-01 09:53:33,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:33,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123442866] [2023-09-01 09:53:33,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:33,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:34,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:53:34,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:34,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123442866] [2023-09-01 09:53:34,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123442866] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:34,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:34,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 09:53:34,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010917255] [2023-09-01 09:53:34,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:34,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 09:53:34,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:34,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 09:53:34,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-09-01 09:53:34,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 203 [2023-09-01 09:53:34,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 86 transitions, 800 flow. Second operand has 8 states, 8 states have (on average 84.625) internal successors, (677), 8 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:34,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:34,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 203 [2023-09-01 09:53:34,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:35,276 INFO L130 PetriNetUnfolder]: 509/949 cut-off events. [2023-09-01 09:53:35,276 INFO L131 PetriNetUnfolder]: For 3929/3929 co-relation queries the response was YES. [2023-09-01 09:53:35,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4567 conditions, 949 events. 509/949 cut-off events. For 3929/3929 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4797 event pairs, 64 based on Foata normal form. 36/985 useless extension candidates. Maximal degree in co-relation 4536. Up to 543 conditions per place. [2023-09-01 09:53:35,287 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 83 selfloop transitions, 29 changer transitions 4/116 dead transitions. [2023-09-01 09:53:35,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 116 transitions, 1208 flow [2023-09-01 09:53:35,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:53:35,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:53:35,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 631 transitions. [2023-09-01 09:53:35,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44405348346235046 [2023-09-01 09:53:35,290 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 631 transitions. [2023-09-01 09:53:35,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 631 transitions. [2023-09-01 09:53:35,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:35,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 631 transitions. [2023-09-01 09:53:35,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:35,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:35,296 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:35,296 INFO L175 Difference]: Start difference. First operand has 62 places, 86 transitions, 800 flow. Second operand 7 states and 631 transitions. [2023-09-01 09:53:35,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 116 transitions, 1208 flow [2023-09-01 09:53:35,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 116 transitions, 1169 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-09-01 09:53:35,315 INFO L231 Difference]: Finished difference. Result has 69 places, 89 transitions, 897 flow [2023-09-01 09:53:35,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=897, PETRI_PLACES=69, PETRI_TRANSITIONS=89} [2023-09-01 09:53:35,316 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 41 predicate places. [2023-09-01 09:53:35,317 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 89 transitions, 897 flow [2023-09-01 09:53:35,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 84.625) internal successors, (677), 8 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:35,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:35,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:35,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 09:53:35,318 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 09:53:35,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:35,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1689299816, now seen corresponding path program 1 times [2023-09-01 09:53:35,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:35,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842146778] [2023-09-01 09:53:35,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:35,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:53:35,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:35,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842146778] [2023-09-01 09:53:35,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842146778] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:35,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:35,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:53:35,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135723395] [2023-09-01 09:53:35,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:35,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 09:53:35,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:35,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 09:53:35,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 09:53:35,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 203 [2023-09-01 09:53:35,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 89 transitions, 897 flow. Second operand has 6 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:35,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:35,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 203 [2023-09-01 09:53:35,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:36,327 INFO L130 PetriNetUnfolder]: 579/1103 cut-off events. [2023-09-01 09:53:36,327 INFO L131 PetriNetUnfolder]: For 5915/5915 co-relation queries the response was YES. [2023-09-01 09:53:36,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5572 conditions, 1103 events. 579/1103 cut-off events. For 5915/5915 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5895 event pairs, 115 based on Foata normal form. 18/1121 useless extension candidates. Maximal degree in co-relation 5538. Up to 542 conditions per place. [2023-09-01 09:53:36,337 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 64 selfloop transitions, 24 changer transitions 31/119 dead transitions. [2023-09-01 09:53:36,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 119 transitions, 1347 flow [2023-09-01 09:53:36,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:53:36,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:53:36,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 473 transitions. [2023-09-01 09:53:36,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660098522167488 [2023-09-01 09:53:36,340 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 473 transitions. [2023-09-01 09:53:36,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 473 transitions. [2023-09-01 09:53:36,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:36,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 473 transitions. [2023-09-01 09:53:36,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.6) internal successors, (473), 5 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:36,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:36,343 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:36,343 INFO L175 Difference]: Start difference. First operand has 69 places, 89 transitions, 897 flow. Second operand 5 states and 473 transitions. [2023-09-01 09:53:36,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 119 transitions, 1347 flow [2023-09-01 09:53:36,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 119 transitions, 1309 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-09-01 09:53:36,371 INFO L231 Difference]: Finished difference. Result has 69 places, 74 transitions, 743 flow [2023-09-01 09:53:36,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=743, PETRI_PLACES=69, PETRI_TRANSITIONS=74} [2023-09-01 09:53:36,373 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 41 predicate places. [2023-09-01 09:53:36,373 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 74 transitions, 743 flow [2023-09-01 09:53:36,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:36,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:36,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:36,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 09:53:36,374 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 09:53:36,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:36,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1757307124, now seen corresponding path program 2 times [2023-09-01 09:53:36,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:36,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243950113] [2023-09-01 09:53:36,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:36,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:37,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:53:37,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:37,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243950113] [2023-09-01 09:53:37,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243950113] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:37,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:37,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:53:37,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651408245] [2023-09-01 09:53:37,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:37,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:53:37,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:37,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:53:37,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:53:37,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 203 [2023-09-01 09:53:37,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 74 transitions, 743 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:37,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:37,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 203 [2023-09-01 09:53:37,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:37,591 INFO L130 PetriNetUnfolder]: 394/753 cut-off events. [2023-09-01 09:53:37,592 INFO L131 PetriNetUnfolder]: For 4104/4104 co-relation queries the response was YES. [2023-09-01 09:53:37,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3822 conditions, 753 events. 394/753 cut-off events. For 4104/4104 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3666 event pairs, 79 based on Foata normal form. 6/759 useless extension candidates. Maximal degree in co-relation 3788. Up to 627 conditions per place. [2023-09-01 09:53:37,598 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 71 selfloop transitions, 20 changer transitions 4/95 dead transitions. [2023-09-01 09:53:37,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 95 transitions, 1067 flow [2023-09-01 09:53:37,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:53:37,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:53:37,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 549 transitions. [2023-09-01 09:53:37,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45073891625615764 [2023-09-01 09:53:37,600 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 549 transitions. [2023-09-01 09:53:37,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 549 transitions. [2023-09-01 09:53:37,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:37,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 549 transitions. [2023-09-01 09:53:37,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.5) internal successors, (549), 6 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:37,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:37,605 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:37,605 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 743 flow. Second operand 6 states and 549 transitions. [2023-09-01 09:53:37,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 95 transitions, 1067 flow [2023-09-01 09:53:37,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 95 transitions, 1013 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-09-01 09:53:37,615 INFO L231 Difference]: Finished difference. Result has 68 places, 76 transitions, 769 flow [2023-09-01 09:53:37,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=769, PETRI_PLACES=68, PETRI_TRANSITIONS=76} [2023-09-01 09:53:37,616 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 40 predicate places. [2023-09-01 09:53:37,616 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 76 transitions, 769 flow [2023-09-01 09:53:37,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:37,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:37,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:37,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 09:53:37,617 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 09:53:37,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:37,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1589283996, now seen corresponding path program 1 times [2023-09-01 09:53:37,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:37,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633839663] [2023-09-01 09:53:37,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:37,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:38,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:53:38,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:38,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633839663] [2023-09-01 09:53:38,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633839663] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:38,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:38,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:53:38,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461871482] [2023-09-01 09:53:38,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:38,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 09:53:38,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:38,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 09:53:38,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 09:53:38,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 203 [2023-09-01 09:53:38,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 76 transitions, 769 flow. Second operand has 6 states, 6 states have (on average 87.5) internal successors, (525), 6 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:38,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:38,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 203 [2023-09-01 09:53:38,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:38,669 INFO L130 PetriNetUnfolder]: 400/779 cut-off events. [2023-09-01 09:53:38,669 INFO L131 PetriNetUnfolder]: For 5084/5084 co-relation queries the response was YES. [2023-09-01 09:53:38,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4091 conditions, 779 events. 400/779 cut-off events. For 5084/5084 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3899 event pairs, 69 based on Foata normal form. 16/795 useless extension candidates. Maximal degree in co-relation 4058. Up to 448 conditions per place. [2023-09-01 09:53:38,677 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 89 selfloop transitions, 47 changer transitions 11/147 dead transitions. [2023-09-01 09:53:38,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 147 transitions, 1643 flow [2023-09-01 09:53:38,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 09:53:38,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 09:53:38,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 740 transitions. [2023-09-01 09:53:38,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45566502463054187 [2023-09-01 09:53:38,680 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 740 transitions. [2023-09-01 09:53:38,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 740 transitions. [2023-09-01 09:53:38,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:38,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 740 transitions. [2023-09-01 09:53:38,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.5) internal successors, (740), 8 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:38,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:38,686 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:38,686 INFO L175 Difference]: Start difference. First operand has 68 places, 76 transitions, 769 flow. Second operand 8 states and 740 transitions. [2023-09-01 09:53:38,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 147 transitions, 1643 flow [2023-09-01 09:53:38,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 147 transitions, 1597 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-09-01 09:53:38,699 INFO L231 Difference]: Finished difference. Result has 75 places, 103 transitions, 1220 flow [2023-09-01 09:53:38,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1220, PETRI_PLACES=75, PETRI_TRANSITIONS=103} [2023-09-01 09:53:38,701 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 47 predicate places. [2023-09-01 09:53:38,701 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 103 transitions, 1220 flow [2023-09-01 09:53:38,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.5) internal successors, (525), 6 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:38,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:38,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:38,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 09:53:38,702 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 09:53:38,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:38,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1358056236, now seen corresponding path program 2 times [2023-09-01 09:53:38,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:38,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219323815] [2023-09-01 09:53:38,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:38,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:39,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:53:39,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:39,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219323815] [2023-09-01 09:53:39,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219323815] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:39,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:39,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 09:53:39,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819176953] [2023-09-01 09:53:39,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:39,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 09:53:39,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:39,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 09:53:39,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-09-01 09:53:40,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 203 [2023-09-01 09:53:40,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 103 transitions, 1220 flow. Second operand has 10 states, 10 states have (on average 77.5) internal successors, (775), 10 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:40,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:40,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 203 [2023-09-01 09:53:40,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:40,761 INFO L130 PetriNetUnfolder]: 378/746 cut-off events. [2023-09-01 09:53:40,761 INFO L131 PetriNetUnfolder]: For 5946/5946 co-relation queries the response was YES. [2023-09-01 09:53:40,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4258 conditions, 746 events. 378/746 cut-off events. For 5946/5946 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3756 event pairs, 66 based on Foata normal form. 16/762 useless extension candidates. Maximal degree in co-relation 4221. Up to 481 conditions per place. [2023-09-01 09:53:40,769 INFO L137 encePairwiseOnDemand]: 193/203 looper letters, 87 selfloop transitions, 82 changer transitions 14/183 dead transitions. [2023-09-01 09:53:40,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 183 transitions, 2269 flow [2023-09-01 09:53:40,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 09:53:40,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 09:53:40,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1239 transitions. [2023-09-01 09:53:40,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068965517241379 [2023-09-01 09:53:40,773 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1239 transitions. [2023-09-01 09:53:40,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1239 transitions. [2023-09-01 09:53:40,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:40,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1239 transitions. [2023-09-01 09:53:40,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 82.6) internal successors, (1239), 15 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:40,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:40,782 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:40,782 INFO L175 Difference]: Start difference. First operand has 75 places, 103 transitions, 1220 flow. Second operand 15 states and 1239 transitions. [2023-09-01 09:53:40,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 183 transitions, 2269 flow [2023-09-01 09:53:40,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 183 transitions, 2187 flow, removed 41 selfloop flow, removed 0 redundant places. [2023-09-01 09:53:40,808 INFO L231 Difference]: Finished difference. Result has 97 places, 142 transitions, 1860 flow [2023-09-01 09:53:40,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1860, PETRI_PLACES=97, PETRI_TRANSITIONS=142} [2023-09-01 09:53:40,809 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 69 predicate places. [2023-09-01 09:53:40,809 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 142 transitions, 1860 flow [2023-09-01 09:53:40,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 77.5) internal successors, (775), 10 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:40,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:40,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:40,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 09:53:40,810 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 09:53:40,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:40,811 INFO L85 PathProgramCache]: Analyzing trace with hash -267089210, now seen corresponding path program 3 times [2023-09-01 09:53:40,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:40,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518444051] [2023-09-01 09:53:40,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:40,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:41,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:53:41,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:41,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518444051] [2023-09-01 09:53:41,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518444051] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:41,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:41,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 09:53:41,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836365750] [2023-09-01 09:53:41,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:41,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 09:53:41,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:41,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 09:53:41,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-09-01 09:53:41,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 203 [2023-09-01 09:53:41,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 142 transitions, 1860 flow. Second operand has 8 states, 8 states have (on average 80.875) internal successors, (647), 8 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:41,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:41,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 203 [2023-09-01 09:53:41,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:42,462 INFO L130 PetriNetUnfolder]: 440/880 cut-off events. [2023-09-01 09:53:42,463 INFO L131 PetriNetUnfolder]: For 7018/7018 co-relation queries the response was YES. [2023-09-01 09:53:42,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5305 conditions, 880 events. 440/880 cut-off events. For 7018/7018 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4741 event pairs, 57 based on Foata normal form. 16/896 useless extension candidates. Maximal degree in co-relation 5258. Up to 446 conditions per place. [2023-09-01 09:53:42,471 INFO L137 encePairwiseOnDemand]: 193/203 looper letters, 87 selfloop transitions, 66 changer transitions 39/192 dead transitions. [2023-09-01 09:53:42,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 192 transitions, 2696 flow [2023-09-01 09:53:42,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 09:53:42,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 09:53:42,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 773 transitions. [2023-09-01 09:53:42,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42309797482211275 [2023-09-01 09:53:42,475 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 773 transitions. [2023-09-01 09:53:42,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 773 transitions. [2023-09-01 09:53:42,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:42,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 773 transitions. [2023-09-01 09:53:42,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.88888888888889) internal successors, (773), 9 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:42,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:42,503 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:42,503 INFO L175 Difference]: Start difference. First operand has 97 places, 142 transitions, 1860 flow. Second operand 9 states and 773 transitions. [2023-09-01 09:53:42,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 192 transitions, 2696 flow [2023-09-01 09:53:42,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 192 transitions, 2566 flow, removed 51 selfloop flow, removed 2 redundant places. [2023-09-01 09:53:42,532 INFO L231 Difference]: Finished difference. Result has 106 places, 132 transitions, 1844 flow [2023-09-01 09:53:42,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1844, PETRI_PLACES=106, PETRI_TRANSITIONS=132} [2023-09-01 09:53:42,533 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 78 predicate places. [2023-09-01 09:53:42,533 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 132 transitions, 1844 flow [2023-09-01 09:53:42,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 80.875) internal successors, (647), 8 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:42,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:42,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:53:42,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 09:53:42,534 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 09:53:42,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:42,535 INFO L85 PathProgramCache]: Analyzing trace with hash 637891837, now seen corresponding path program 1 times [2023-09-01 09:53:42,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:42,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053145228] [2023-09-01 09:53:42,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:42,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:43,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:53:43,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:43,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053145228] [2023-09-01 09:53:43,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053145228] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:43,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:43,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 09:53:43,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538102537] [2023-09-01 09:53:43,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:43,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 09:53:43,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:43,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 09:53:43,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-09-01 09:53:43,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 203 [2023-09-01 09:53:43,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 132 transitions, 1844 flow. Second operand has 8 states, 8 states have (on average 86.875) internal successors, (695), 8 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:43,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:43,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 203 [2023-09-01 09:53:43,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:43,740 INFO L130 PetriNetUnfolder]: 324/642 cut-off events. [2023-09-01 09:53:43,741 INFO L131 PetriNetUnfolder]: For 5744/5744 co-relation queries the response was YES. [2023-09-01 09:53:43,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4111 conditions, 642 events. 324/642 cut-off events. For 5744/5744 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3163 event pairs, 52 based on Foata normal form. 16/658 useless extension candidates. Maximal degree in co-relation 4072. Up to 464 conditions per place. [2023-09-01 09:53:43,745 INFO L137 encePairwiseOnDemand]: 199/203 looper letters, 0 selfloop transitions, 0 changer transitions 139/139 dead transitions. [2023-09-01 09:53:43,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 139 transitions, 2158 flow [2023-09-01 09:53:43,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:53:43,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:53:43,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 455 transitions. [2023-09-01 09:53:43,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2023-09-01 09:53:43,748 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 455 transitions. [2023-09-01 09:53:43,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 455 transitions. [2023-09-01 09:53:43,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:43,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 455 transitions. [2023-09-01 09:53:43,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:43,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:43,751 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:43,751 INFO L175 Difference]: Start difference. First operand has 106 places, 132 transitions, 1844 flow. Second operand 5 states and 455 transitions. [2023-09-01 09:53:43,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 139 transitions, 2158 flow [2023-09-01 09:53:43,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 139 transitions, 2072 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-09-01 09:53:43,777 INFO L231 Difference]: Finished difference. Result has 99 places, 0 transitions, 0 flow [2023-09-01 09:53:43,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1736, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=99, PETRI_TRANSITIONS=0} [2023-09-01 09:53:43,778 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 71 predicate places. [2023-09-01 09:53:43,778 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 0 transitions, 0 flow [2023-09-01 09:53:43,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 86.875) internal successors, (695), 8 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:43,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-09-01 09:53:43,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-09-01 09:53:43,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-09-01 09:53:43,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-09-01 09:53:43,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-09-01 09:53:43,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-09-01 09:53:43,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-09-01 09:53:43,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 09:53:43,782 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 2, 1, 1, 1, 1, 1] [2023-09-01 09:53:43,787 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 09:53:43,788 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 09:53:43,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 09:53:43 BasicIcfg [2023-09-01 09:53:43,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 09:53:43,791 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 09:53:43,791 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 09:53:43,791 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 09:53:43,792 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:53:19" (3/4) ... [2023-09-01 09:53:43,794 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 09:53:43,798 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-09-01 09:53:43,798 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-09-01 09:53:43,804 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2023-09-01 09:53:43,804 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-09-01 09:53:43,805 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 09:53:43,805 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 09:53:43,846 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 09:53:43,846 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 09:53:43,846 INFO L158 Benchmark]: Toolchain (without parser) took 26417.14ms. Allocated memory was 75.5MB in the beginning and 490.7MB in the end (delta: 415.2MB). Free memory was 51.2MB in the beginning and 254.1MB in the end (delta: -202.9MB). Peak memory consumption was 211.7MB. Max. memory is 16.1GB. [2023-09-01 09:53:43,847 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 60.8MB. Free memory was 38.7MB in the beginning and 38.6MB in the end (delta: 57.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:53:43,847 INFO L158 Benchmark]: CACSL2BoogieTranslator took 616.07ms. Allocated memory is still 75.5MB. Free memory was 51.1MB in the beginning and 40.1MB in the end (delta: 11.0MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2023-09-01 09:53:43,847 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.32ms. Allocated memory is still 75.5MB. Free memory was 40.1MB in the beginning and 36.4MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 09:53:43,848 INFO L158 Benchmark]: Boogie Preprocessor took 36.41ms. Allocated memory is still 75.5MB. Free memory was 36.4MB in the beginning and 33.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:53:43,848 INFO L158 Benchmark]: RCFGBuilder took 934.16ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 33.9MB in the beginning and 56.8MB in the end (delta: -22.9MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2023-09-01 09:53:43,848 INFO L158 Benchmark]: TraceAbstraction took 24705.82ms. Allocated memory was 92.3MB in the beginning and 490.7MB in the end (delta: 398.5MB). Free memory was 56.2MB in the beginning and 257.3MB in the end (delta: -201.0MB). Peak memory consumption was 196.5MB. Max. memory is 16.1GB. [2023-09-01 09:53:43,848 INFO L158 Benchmark]: Witness Printer took 54.87ms. Allocated memory is still 490.7MB. Free memory was 257.3MB in the beginning and 254.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 09:53:43,850 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 60.8MB. Free memory was 38.7MB in the beginning and 38.6MB in the end (delta: 57.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 616.07ms. Allocated memory is still 75.5MB. Free memory was 51.1MB in the beginning and 40.1MB in the end (delta: 11.0MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.32ms. Allocated memory is still 75.5MB. Free memory was 40.1MB in the beginning and 36.4MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.41ms. Allocated memory is still 75.5MB. Free memory was 36.4MB in the beginning and 33.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 934.16ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 33.9MB in the beginning and 56.8MB in the end (delta: -22.9MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * TraceAbstraction took 24705.82ms. Allocated memory was 92.3MB in the beginning and 490.7MB in the end (delta: 398.5MB). Free memory was 56.2MB in the beginning and 257.3MB in the end (delta: -201.0MB). Peak memory consumption was 196.5MB. Max. memory is 16.1GB. * Witness Printer took 54.87ms. Allocated memory is still 490.7MB. Free memory was 257.3MB in the beginning and 254.1MB 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: 5.1s, 110 PlacesBefore, 28 PlacesAfterwards, 105 TransitionsBefore, 21 TransitionsAfterwards, 1314 CoEnabledTransitionPairs, 7 FixpointIterations, 50 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 96 TotalNumberOfCompositions, 4349 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1368, independent: 1172, independent conditional: 0, independent unconditional: 1172, dependent: 196, dependent conditional: 0, dependent unconditional: 196, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 728, independent: 685, independent conditional: 0, independent unconditional: 685, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1368, independent: 487, independent conditional: 0, independent unconditional: 487, dependent: 153, dependent conditional: 0, dependent unconditional: 153, unknown: 728, unknown conditional: 0, unknown unconditional: 728] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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, 129 locations, 7 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: 24.6s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 739 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 586 mSDsluCounter, 535 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 472 mSDsCounter, 322 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1932 IncrementalHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 322 mSolverCounterUnsat, 63 mSDtfsCounter, 1932 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1860occurred in iteration=13, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 166 ConstructedInterpolants, 0 QuantifiedInterpolants, 2462 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 09:53:43,884 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