./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe013_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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 ../sv-benchmarks/c/pthread-wmm/safe013_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 0cdeed82108b12e5d5525e3abe542fd48b9a422ac7475147d5db7c8538ce4dc0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:44:01,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:44:01,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:44:01,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:44:01,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:44:01,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:44:01,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:44:01,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:44:01,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:44:01,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:44:01,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:44:01,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:44:01,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:44:01,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:44:01,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:44:01,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:44:01,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:44:01,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:44:01,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:44:01,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:44:01,088 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:44:01,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:44:01,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:44:01,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:44:01,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:44:01,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:44:01,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:44:01,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:44:01,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:44:01,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:44:01,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:44:01,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:44:01,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:44:01,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:44:01,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:44:01,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:44:01,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:44:01,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:44:01,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:44:01,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:44:01,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:44:01,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:44:01,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:44:01,162 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:44:01,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:44:01,163 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:44:01,163 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:44:01,164 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:44:01,164 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:44:01,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:44:01,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:44:01,166 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:44:01,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:44:01,167 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:44:01,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:44:01,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:44:01,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:44:01,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:44:01,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:44:01,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:44:01,168 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:44:01,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:44:01,169 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:44:01,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:44:01,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:44:01,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:44:01,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:44:01,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:44:01,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:44:01,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:44:01,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:44:01,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:44:01,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:44:01,171 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:44:01,171 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:44:01,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:44:01,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cdeed82108b12e5d5525e3abe542fd48b9a422ac7475147d5db7c8538ce4dc0 [2022-07-21 08:44:01,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:44:01,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:44:01,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:44:01,527 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:44:01,527 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:44:01,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe013_tso.i [2022-07-21 08:44:01,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e990702c7/ee1c4f24d2bc440398180578bd1b8831/FLAG4c33534b0 [2022-07-21 08:44:02,120 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:44:02,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe013_tso.i [2022-07-21 08:44:02,140 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e990702c7/ee1c4f24d2bc440398180578bd1b8831/FLAG4c33534b0 [2022-07-21 08:44:02,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e990702c7/ee1c4f24d2bc440398180578bd1b8831 [2022-07-21 08:44:02,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:44:02,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:44:02,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:44:02,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:44:02,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:44:02,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:44:02" (1/1) ... [2022-07-21 08:44:02,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a14add1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:02, skipping insertion in model container [2022-07-21 08:44:02,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:44:02" (1/1) ... [2022-07-21 08:44:02,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:44:02,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:44:02,810 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe013_tso.i[945,958] [2022-07-21 08:44:02,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:44:02,985 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:44:02,997 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe013_tso.i[945,958] [2022-07-21 08:44:03,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:44:03,073 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:44:03,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:03 WrapperNode [2022-07-21 08:44:03,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:44:03,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:44:03,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:44:03,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:44:03,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:03" (1/1) ... [2022-07-21 08:44:03,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:03" (1/1) ... [2022-07-21 08:44:03,132 INFO L137 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-07-21 08:44:03,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:44:03,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:44:03,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:44:03,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:44:03,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:03" (1/1) ... [2022-07-21 08:44:03,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:03" (1/1) ... [2022-07-21 08:44:03,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:03" (1/1) ... [2022-07-21 08:44:03,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:03" (1/1) ... [2022-07-21 08:44:03,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:03" (1/1) ... [2022-07-21 08:44:03,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:03" (1/1) ... [2022-07-21 08:44:03,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:03" (1/1) ... [2022-07-21 08:44:03,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:44:03,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:44:03,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:44:03,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:44:03,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:03" (1/1) ... [2022-07-21 08:44:03,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:44:03,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:44:03,221 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:44:03,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:44:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:44:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-21 08:44:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:44:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:44:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:44:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-21 08:44:03,272 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-21 08:44:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-21 08:44:03,272 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-21 08:44:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-21 08:44:03,273 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-21 08:44:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:44:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-21 08:44:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:44:03,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:44:03,275 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:44:03,373 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:44:03,374 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:44:03,559 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:44:03,568 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:44:03,569 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:44:03,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:44:03 BoogieIcfgContainer [2022-07-21 08:44:03,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:44:03,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:44:03,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:44:03,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:44:03,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:44:02" (1/3) ... [2022-07-21 08:44:03,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e994c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:44:03, skipping insertion in model container [2022-07-21 08:44:03,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:03" (2/3) ... [2022-07-21 08:44:03,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e994c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:44:03, skipping insertion in model container [2022-07-21 08:44:03,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:44:03" (3/3) ... [2022-07-21 08:44:03,579 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.i [2022-07-21 08:44:03,585 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:44:03,594 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:44:03,594 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:44:03,594 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:44:03,648 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:44:03,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-07-21 08:44:03,736 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2022-07-21 08:44:03,737 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:44:03,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-07-21 08:44:03,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-07-21 08:44:03,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-07-21 08:44:03,772 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:44:03,780 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@c6cc267, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@32f5befd [2022-07-21 08:44:03,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 08:44:03,818 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2022-07-21 08:44:03,818 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:44:03,819 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:03,819 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:03,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:44:03,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:03,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1214845436, now seen corresponding path program 1 times [2022-07-21 08:44:03,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:03,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412276146] [2022-07-21 08:44:03,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:03,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:04,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:04,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:04,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412276146] [2022-07-21 08:44:04,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412276146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:04,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:04,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:44:04,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406331942] [2022-07-21 08:44:04,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:04,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:44:04,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:04,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:44:04,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:44:04,364 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2022-07-21 08:44:04,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:04,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:04,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2022-07-21 08:44:04,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:04,747 INFO L129 PetriNetUnfolder]: 104/404 cut-off events. [2022-07-21 08:44:04,747 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-21 08:44:04,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 404 events. 104/404 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1983 event pairs, 33 based on Foata normal form. 15/406 useless extension candidates. Maximal degree in co-relation 605. Up to 95 conditions per place. [2022-07-21 08:44:04,767 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 20 selfloop transitions, 5 changer transitions 28/111 dead transitions. [2022-07-21 08:44:04,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 111 transitions, 343 flow [2022-07-21 08:44:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:44:04,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:44:04,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 705 transitions. [2022-07-21 08:44:04,783 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8514492753623188 [2022-07-21 08:44:04,783 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 705 transitions. [2022-07-21 08:44:04,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 705 transitions. [2022-07-21 08:44:04,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:04,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 705 transitions. [2022-07-21 08:44:04,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.33333333333333) internal successors, (705), 9 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:04,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:04,822 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:04,825 INFO L186 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 9 states and 705 transitions. [2022-07-21 08:44:04,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 111 transitions, 343 flow [2022-07-21 08:44:04,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 111 transitions, 338 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-21 08:44:04,839 INFO L242 Difference]: Finished difference. Result has 96 places, 77 transitions, 213 flow [2022-07-21 08:44:04,845 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=213, PETRI_PLACES=96, PETRI_TRANSITIONS=77} [2022-07-21 08:44:04,849 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 12 predicate places. [2022-07-21 08:44:04,849 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 77 transitions, 213 flow [2022-07-21 08:44:04,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:04,850 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:04,851 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:04,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:44:04,851 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:44:04,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:04,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1299331837, now seen corresponding path program 1 times [2022-07-21 08:44:04,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:04,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71016863] [2022-07-21 08:44:04,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:04,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:05,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:05,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:05,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71016863] [2022-07-21 08:44:05,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71016863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:05,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:05,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:44:05,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508007794] [2022-07-21 08:44:05,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:05,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:44:05,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:05,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:44:05,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:44:05,043 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 92 [2022-07-21 08:44:05,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 77 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:05,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 92 [2022-07-21 08:44:05,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:05,223 INFO L129 PetriNetUnfolder]: 29/209 cut-off events. [2022-07-21 08:44:05,224 INFO L130 PetriNetUnfolder]: For 232/264 co-relation queries the response was YES. [2022-07-21 08:44:05,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 209 events. 29/209 cut-off events. For 232/264 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 841 event pairs, 16 based on Foata normal form. 4/200 useless extension candidates. Maximal degree in co-relation 433. Up to 47 conditions per place. [2022-07-21 08:44:05,230 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 9 selfloop transitions, 3 changer transitions 10/87 dead transitions. [2022-07-21 08:44:05,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 87 transitions, 319 flow [2022-07-21 08:44:05,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:44:05,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:44:05,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 716 transitions. [2022-07-21 08:44:05,242 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8647342995169082 [2022-07-21 08:44:05,243 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 716 transitions. [2022-07-21 08:44:05,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 716 transitions. [2022-07-21 08:44:05,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:05,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 716 transitions. [2022-07-21 08:44:05,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.55555555555556) internal successors, (716), 9 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,256 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,256 INFO L186 Difference]: Start difference. First operand has 96 places, 77 transitions, 213 flow. Second operand 9 states and 716 transitions. [2022-07-21 08:44:05,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 87 transitions, 319 flow [2022-07-21 08:44:05,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 87 transitions, 300 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-07-21 08:44:05,263 INFO L242 Difference]: Finished difference. Result has 101 places, 77 transitions, 225 flow [2022-07-21 08:44:05,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=225, PETRI_PLACES=101, PETRI_TRANSITIONS=77} [2022-07-21 08:44:05,265 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 17 predicate places. [2022-07-21 08:44:05,265 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 77 transitions, 225 flow [2022-07-21 08:44:05,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,266 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:05,266 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:05,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:44:05,266 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:44:05,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:05,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1079130877, now seen corresponding path program 1 times [2022-07-21 08:44:05,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:05,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472770914] [2022-07-21 08:44:05,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:05,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:05,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:05,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:05,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472770914] [2022-07-21 08:44:05,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472770914] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:05,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:05,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:44:05,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349017306] [2022-07-21 08:44:05,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:05,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:44:05,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:05,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:44:05,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:44:05,473 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-21 08:44:05,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 77 transitions, 225 flow. Second operand has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:05,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-21 08:44:05,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:05,840 INFO L129 PetriNetUnfolder]: 234/708 cut-off events. [2022-07-21 08:44:05,840 INFO L130 PetriNetUnfolder]: For 1061/1165 co-relation queries the response was YES. [2022-07-21 08:44:05,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1875 conditions, 708 events. 234/708 cut-off events. For 1061/1165 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4298 event pairs, 6 based on Foata normal form. 21/711 useless extension candidates. Maximal degree in co-relation 1826. Up to 133 conditions per place. [2022-07-21 08:44:05,847 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 35 selfloop transitions, 16 changer transitions 62/169 dead transitions. [2022-07-21 08:44:05,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 169 transitions, 1015 flow [2022-07-21 08:44:05,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 08:44:05,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 08:44:05,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1291 transitions. [2022-07-21 08:44:05,852 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8254475703324808 [2022-07-21 08:44:05,852 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1291 transitions. [2022-07-21 08:44:05,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1291 transitions. [2022-07-21 08:44:05,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:05,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1291 transitions. [2022-07-21 08:44:05,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 75.94117647058823) internal successors, (1291), 17 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,861 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,862 INFO L186 Difference]: Start difference. First operand has 101 places, 77 transitions, 225 flow. Second operand 17 states and 1291 transitions. [2022-07-21 08:44:05,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 169 transitions, 1015 flow [2022-07-21 08:44:05,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 169 transitions, 925 flow, removed 40 selfloop flow, removed 8 redundant places. [2022-07-21 08:44:05,870 INFO L242 Difference]: Finished difference. Result has 119 places, 88 transitions, 411 flow [2022-07-21 08:44:05,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=411, PETRI_PLACES=119, PETRI_TRANSITIONS=88} [2022-07-21 08:44:05,871 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 35 predicate places. [2022-07-21 08:44:05,871 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 88 transitions, 411 flow [2022-07-21 08:44:05,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:05,872 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:05,872 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:05,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:44:05,873 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:44:05,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:05,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1276075708, now seen corresponding path program 1 times [2022-07-21 08:44:05,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:05,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114098887] [2022-07-21 08:44:05,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:05,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:06,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:06,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:06,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114098887] [2022-07-21 08:44:06,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114098887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:06,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:06,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:44:06,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522943633] [2022-07-21 08:44:06,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:06,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:44:06,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:06,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:44:06,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:44:06,022 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-21 08:44:06,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 88 transitions, 411 flow. Second operand has 8 states, 8 states have (on average 71.875) internal successors, (575), 8 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:06,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-21 08:44:06,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:06,228 INFO L129 PetriNetUnfolder]: 126/470 cut-off events. [2022-07-21 08:44:06,228 INFO L130 PetriNetUnfolder]: For 3540/4486 co-relation queries the response was YES. [2022-07-21 08:44:06,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1938 conditions, 470 events. 126/470 cut-off events. For 3540/4486 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2534 event pairs, 14 based on Foata normal form. 13/464 useless extension candidates. Maximal degree in co-relation 1877. Up to 96 conditions per place. [2022-07-21 08:44:06,234 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 22 selfloop transitions, 9 changer transitions 44/131 dead transitions. [2022-07-21 08:44:06,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 131 transitions, 1059 flow [2022-07-21 08:44:06,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:44:06,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:44:06,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 827 transitions. [2022-07-21 08:44:06,238 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.817193675889328 [2022-07-21 08:44:06,238 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 827 transitions. [2022-07-21 08:44:06,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 827 transitions. [2022-07-21 08:44:06,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:06,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 827 transitions. [2022-07-21 08:44:06,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 75.18181818181819) internal successors, (827), 11 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,248 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,248 INFO L186 Difference]: Start difference. First operand has 119 places, 88 transitions, 411 flow. Second operand 11 states and 827 transitions. [2022-07-21 08:44:06,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 131 transitions, 1059 flow [2022-07-21 08:44:06,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 131 transitions, 855 flow, removed 102 selfloop flow, removed 9 redundant places. [2022-07-21 08:44:06,263 INFO L242 Difference]: Finished difference. Result has 117 places, 80 transitions, 317 flow [2022-07-21 08:44:06,263 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=317, PETRI_PLACES=117, PETRI_TRANSITIONS=80} [2022-07-21 08:44:06,266 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 33 predicate places. [2022-07-21 08:44:06,266 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 80 transitions, 317 flow [2022-07-21 08:44:06,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.875) internal successors, (575), 8 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,267 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:06,267 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:06,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:44:06,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:44:06,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:06,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1526244240, now seen corresponding path program 1 times [2022-07-21 08:44:06,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:06,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614926442] [2022-07-21 08:44:06,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:06,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:06,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:06,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614926442] [2022-07-21 08:44:06,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614926442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:06,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:06,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:44:06,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638083675] [2022-07-21 08:44:06,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:06,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:44:06,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:06,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:44:06,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:44:06,374 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2022-07-21 08:44:06,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 80 transitions, 317 flow. Second operand has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:06,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2022-07-21 08:44:06,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:06,581 INFO L129 PetriNetUnfolder]: 58/316 cut-off events. [2022-07-21 08:44:06,582 INFO L130 PetriNetUnfolder]: For 1161/1276 co-relation queries the response was YES. [2022-07-21 08:44:06,583 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 316 events. 58/316 cut-off events. For 1161/1276 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1451 event pairs, 13 based on Foata normal form. 10/318 useless extension candidates. Maximal degree in co-relation 1020. Up to 60 conditions per place. [2022-07-21 08:44:06,585 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 19 selfloop transitions, 9 changer transitions 28/115 dead transitions. [2022-07-21 08:44:06,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 115 transitions, 752 flow [2022-07-21 08:44:06,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:44:06,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:44:06,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 993 transitions. [2022-07-21 08:44:06,589 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.830267558528428 [2022-07-21 08:44:06,589 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 993 transitions. [2022-07-21 08:44:06,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 993 transitions. [2022-07-21 08:44:06,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:06,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 993 transitions. [2022-07-21 08:44:06,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.38461538461539) internal successors, (993), 13 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,595 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,595 INFO L186 Difference]: Start difference. First operand has 117 places, 80 transitions, 317 flow. Second operand 13 states and 993 transitions. [2022-07-21 08:44:06,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 115 transitions, 752 flow [2022-07-21 08:44:06,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 115 transitions, 565 flow, removed 45 selfloop flow, removed 15 redundant places. [2022-07-21 08:44:06,602 INFO L242 Difference]: Finished difference. Result has 118 places, 81 transitions, 294 flow [2022-07-21 08:44:06,602 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=294, PETRI_PLACES=118, PETRI_TRANSITIONS=81} [2022-07-21 08:44:06,603 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 34 predicate places. [2022-07-21 08:44:06,603 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 81 transitions, 294 flow [2022-07-21 08:44:06,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,604 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:06,604 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:06,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:44:06,604 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:44:06,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:06,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1443146767, now seen corresponding path program 1 times [2022-07-21 08:44:06,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:06,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432416878] [2022-07-21 08:44:06,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:06,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:06,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:06,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:06,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432416878] [2022-07-21 08:44:06,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432416878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:06,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:06,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:44:06,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922203685] [2022-07-21 08:44:06,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:06,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:44:06,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:06,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:44:06,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:44:06,723 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-07-21 08:44:06,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 81 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:06,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-07-21 08:44:06,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:06,909 INFO L129 PetriNetUnfolder]: 316/882 cut-off events. [2022-07-21 08:44:06,909 INFO L130 PetriNetUnfolder]: For 544/567 co-relation queries the response was YES. [2022-07-21 08:44:06,915 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1862 conditions, 882 events. 316/882 cut-off events. For 544/567 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5932 event pairs, 42 based on Foata normal form. 0/801 useless extension candidates. Maximal degree in co-relation 1839. Up to 213 conditions per place. [2022-07-21 08:44:06,919 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 29 selfloop transitions, 17 changer transitions 0/113 dead transitions. [2022-07-21 08:44:06,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 113 transitions, 454 flow [2022-07-21 08:44:06,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:44:06,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:44:06,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 798 transitions. [2022-07-21 08:44:06,922 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8673913043478261 [2022-07-21 08:44:06,922 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 798 transitions. [2022-07-21 08:44:06,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 798 transitions. [2022-07-21 08:44:06,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:06,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 798 transitions. [2022-07-21 08:44:06,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.8) internal successors, (798), 10 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,927 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,928 INFO L186 Difference]: Start difference. First operand has 118 places, 81 transitions, 294 flow. Second operand 10 states and 798 transitions. [2022-07-21 08:44:06,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 113 transitions, 454 flow [2022-07-21 08:44:06,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 113 transitions, 420 flow, removed 12 selfloop flow, removed 11 redundant places. [2022-07-21 08:44:06,935 INFO L242 Difference]: Finished difference. Result has 113 places, 96 transitions, 380 flow [2022-07-21 08:44:06,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=380, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2022-07-21 08:44:06,938 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 29 predicate places. [2022-07-21 08:44:06,938 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 380 flow [2022-07-21 08:44:06,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:06,939 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:06,939 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:06,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:44:06,939 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:44:06,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:06,940 INFO L85 PathProgramCache]: Analyzing trace with hash -3064422, now seen corresponding path program 1 times [2022-07-21 08:44:06,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:06,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219918435] [2022-07-21 08:44:06,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:06,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:07,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:07,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219918435] [2022-07-21 08:44:07,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219918435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:07,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:07,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:44:07,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095200638] [2022-07-21 08:44:07,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:07,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:44:07,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:07,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:44:07,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:44:07,046 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-07-21 08:44:07,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 380 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:07,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:07,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-07-21 08:44:07,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:07,274 INFO L129 PetriNetUnfolder]: 305/850 cut-off events. [2022-07-21 08:44:07,275 INFO L130 PetriNetUnfolder]: For 1815/1981 co-relation queries the response was YES. [2022-07-21 08:44:07,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2816 conditions, 850 events. 305/850 cut-off events. For 1815/1981 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5813 event pairs, 2 based on Foata normal form. 60/855 useless extension candidates. Maximal degree in co-relation 2797. Up to 314 conditions per place. [2022-07-21 08:44:07,284 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 26 selfloop transitions, 32 changer transitions 9/134 dead transitions. [2022-07-21 08:44:07,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 134 transitions, 750 flow [2022-07-21 08:44:07,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:44:07,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:44:07,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1038 transitions. [2022-07-21 08:44:07,287 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8678929765886287 [2022-07-21 08:44:07,287 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1038 transitions. [2022-07-21 08:44:07,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1038 transitions. [2022-07-21 08:44:07,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:07,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1038 transitions. [2022-07-21 08:44:07,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.84615384615384) internal successors, (1038), 13 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:07,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:07,293 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:07,293 INFO L186 Difference]: Start difference. First operand has 113 places, 96 transitions, 380 flow. Second operand 13 states and 1038 transitions. [2022-07-21 08:44:07,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 134 transitions, 750 flow [2022-07-21 08:44:07,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 134 transitions, 741 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-21 08:44:07,313 INFO L242 Difference]: Finished difference. Result has 127 places, 116 transitions, 614 flow [2022-07-21 08:44:07,314 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=614, PETRI_PLACES=127, PETRI_TRANSITIONS=116} [2022-07-21 08:44:07,314 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 43 predicate places. [2022-07-21 08:44:07,315 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 116 transitions, 614 flow [2022-07-21 08:44:07,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:07,315 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:07,316 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:07,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:44:07,316 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:44:07,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:07,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1285319411, now seen corresponding path program 1 times [2022-07-21 08:44:07,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:07,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756045236] [2022-07-21 08:44:07,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:07,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:07,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:07,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756045236] [2022-07-21 08:44:07,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756045236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:07,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:07,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:44:07,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871650931] [2022-07-21 08:44:07,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:07,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:44:07,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:07,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:44:07,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:44:07,442 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-07-21 08:44:07,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 116 transitions, 614 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:07,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:07,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-07-21 08:44:07,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:07,737 INFO L129 PetriNetUnfolder]: 228/713 cut-off events. [2022-07-21 08:44:07,737 INFO L130 PetriNetUnfolder]: For 2582/2805 co-relation queries the response was YES. [2022-07-21 08:44:07,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2844 conditions, 713 events. 228/713 cut-off events. For 2582/2805 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5142 event pairs, 1 based on Foata normal form. 70/729 useless extension candidates. Maximal degree in co-relation 2822. Up to 242 conditions per place. [2022-07-21 08:44:07,744 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 20 selfloop transitions, 32 changer transitions 26/145 dead transitions. [2022-07-21 08:44:07,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 145 transitions, 956 flow [2022-07-21 08:44:07,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:44:07,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 08:44:07,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1262 transitions. [2022-07-21 08:44:07,749 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8573369565217391 [2022-07-21 08:44:07,749 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1262 transitions. [2022-07-21 08:44:07,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1262 transitions. [2022-07-21 08:44:07,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:07,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1262 transitions. [2022-07-21 08:44:07,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 78.875) internal successors, (1262), 16 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:07,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:07,757 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:07,757 INFO L186 Difference]: Start difference. First operand has 127 places, 116 transitions, 614 flow. Second operand 16 states and 1262 transitions. [2022-07-21 08:44:07,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 145 transitions, 956 flow [2022-07-21 08:44:07,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 145 transitions, 799 flow, removed 64 selfloop flow, removed 7 redundant places. [2022-07-21 08:44:07,772 INFO L242 Difference]: Finished difference. Result has 142 places, 112 transitions, 574 flow [2022-07-21 08:44:07,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=574, PETRI_PLACES=142, PETRI_TRANSITIONS=112} [2022-07-21 08:44:07,773 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 58 predicate places. [2022-07-21 08:44:07,773 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 112 transitions, 574 flow [2022-07-21 08:44:07,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:07,774 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:07,774 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:07,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:44:07,774 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:44:07,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:07,775 INFO L85 PathProgramCache]: Analyzing trace with hash -639518370, now seen corresponding path program 1 times [2022-07-21 08:44:07,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:07,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011004757] [2022-07-21 08:44:07,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:07,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:07,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:07,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011004757] [2022-07-21 08:44:07,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011004757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:07,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:07,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:44:07,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714032324] [2022-07-21 08:44:07,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:07,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:44:07,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:07,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:44:07,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:44:07,853 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2022-07-21 08:44:07,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 112 transitions, 574 flow. Second operand has 7 states, 7 states have (on average 74.28571428571429) internal successors, (520), 7 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:07,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:07,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2022-07-21 08:44:07,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:07,994 INFO L129 PetriNetUnfolder]: 130/679 cut-off events. [2022-07-21 08:44:07,994 INFO L130 PetriNetUnfolder]: For 1421/1453 co-relation queries the response was YES. [2022-07-21 08:44:07,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1963 conditions, 679 events. 130/679 cut-off events. For 1421/1453 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5289 event pairs, 3 based on Foata normal form. 1/653 useless extension candidates. Maximal degree in co-relation 1937. Up to 95 conditions per place. [2022-07-21 08:44:07,999 INFO L132 encePairwiseOnDemand]: 84/92 looper letters, 12 selfloop transitions, 4 changer transitions 39/118 dead transitions. [2022-07-21 08:44:07,999 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 118 transitions, 648 flow [2022-07-21 08:44:08,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:44:08,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 08:44:08,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 531 transitions. [2022-07-21 08:44:08,002 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8245341614906833 [2022-07-21 08:44:08,002 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 531 transitions. [2022-07-21 08:44:08,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 531 transitions. [2022-07-21 08:44:08,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:08,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 531 transitions. [2022-07-21 08:44:08,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:08,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:08,006 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:08,007 INFO L186 Difference]: Start difference. First operand has 142 places, 112 transitions, 574 flow. Second operand 7 states and 531 transitions. [2022-07-21 08:44:08,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 118 transitions, 648 flow [2022-07-21 08:44:08,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 118 transitions, 586 flow, removed 10 selfloop flow, removed 14 redundant places. [2022-07-21 08:44:08,018 INFO L242 Difference]: Finished difference. Result has 135 places, 79 transitions, 290 flow [2022-07-21 08:44:08,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=290, PETRI_PLACES=135, PETRI_TRANSITIONS=79} [2022-07-21 08:44:08,019 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 51 predicate places. [2022-07-21 08:44:08,020 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 79 transitions, 290 flow [2022-07-21 08:44:08,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.28571428571429) internal successors, (520), 7 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:08,020 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:08,020 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:08,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:44:08,022 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:44:08,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:08,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2005164298, now seen corresponding path program 2 times [2022-07-21 08:44:08,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:08,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114694139] [2022-07-21 08:44:08,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:08,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:08,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:08,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:08,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114694139] [2022-07-21 08:44:08,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114694139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:08,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:08,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:44:08,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666617372] [2022-07-21 08:44:08,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:08,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:44:08,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:08,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:44:08,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:44:08,120 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-21 08:44:08,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 79 transitions, 290 flow. Second operand has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:08,121 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:08,121 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-21 08:44:08,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:08,200 INFO L129 PetriNetUnfolder]: 6/93 cut-off events. [2022-07-21 08:44:08,200 INFO L130 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2022-07-21 08:44:08,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 93 events. 6/93 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 93 event pairs, 0 based on Foata normal form. 1/93 useless extension candidates. Maximal degree in co-relation 187. Up to 9 conditions per place. [2022-07-21 08:44:08,201 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 0 selfloop transitions, 0 changer transitions 78/78 dead transitions. [2022-07-21 08:44:08,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 78 transitions, 324 flow [2022-07-21 08:44:08,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 08:44:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-21 08:44:08,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 579 transitions. [2022-07-21 08:44:08,204 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7866847826086957 [2022-07-21 08:44:08,205 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 579 transitions. [2022-07-21 08:44:08,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 579 transitions. [2022-07-21 08:44:08,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:08,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 579 transitions. [2022-07-21 08:44:08,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.375) internal successors, (579), 8 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:08,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:08,211 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:08,211 INFO L186 Difference]: Start difference. First operand has 135 places, 79 transitions, 290 flow. Second operand 8 states and 579 transitions. [2022-07-21 08:44:08,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 78 transitions, 324 flow [2022-07-21 08:44:08,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 78 transitions, 226 flow, removed 16 selfloop flow, removed 28 redundant places. [2022-07-21 08:44:08,213 INFO L242 Difference]: Finished difference. Result has 95 places, 0 transitions, 0 flow [2022-07-21 08:44:08,214 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=95, PETRI_TRANSITIONS=0} [2022-07-21 08:44:08,215 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 11 predicate places. [2022-07-21 08:44:08,215 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 0 transitions, 0 flow [2022-07-21 08:44:08,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:08,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-21 08:44:08,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-21 08:44:08,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-21 08:44:08,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-07-21 08:44:08,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:44:08,220 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:08,225 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-21 08:44:08,225 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 08:44:08,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:44:08 BasicIcfg [2022-07-21 08:44:08,232 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 08:44:08,233 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 08:44:08,233 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 08:44:08,233 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 08:44:08,234 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:44:03" (3/4) ... [2022-07-21 08:44:08,236 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 08:44:08,242 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-21 08:44:08,242 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-21 08:44:08,242 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-07-21 08:44:08,249 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-07-21 08:44:08,249 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-21 08:44:08,249 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 08:44:08,249 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 08:44:08,287 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 08:44:08,287 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 08:44:08,288 INFO L158 Benchmark]: Toolchain (without parser) took 5675.66ms. Allocated memory was 54.5MB in the beginning and 119.5MB in the end (delta: 65.0MB). Free memory was 30.4MB in the beginning and 36.9MB in the end (delta: -6.5MB). Peak memory consumption was 59.5MB. Max. memory is 16.1GB. [2022-07-21 08:44:08,288 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory was 36.3MB in the beginning and 36.2MB in the end (delta: 37.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:44:08,289 INFO L158 Benchmark]: CACSL2BoogieTranslator took 461.38ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 30.2MB in the beginning and 40.7MB in the end (delta: -10.4MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2022-07-21 08:44:08,289 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.84ms. Allocated memory is still 67.1MB. Free memory was 40.7MB in the beginning and 38.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:44:08,290 INFO L158 Benchmark]: Boogie Preprocessor took 46.70ms. Allocated memory is still 67.1MB. Free memory was 38.7MB in the beginning and 37.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:44:08,290 INFO L158 Benchmark]: RCFGBuilder took 390.69ms. Allocated memory is still 67.1MB. Free memory was 37.3MB in the beginning and 39.3MB in the end (delta: -2.0MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2022-07-21 08:44:08,291 INFO L158 Benchmark]: TraceAbstraction took 4658.10ms. Allocated memory was 67.1MB in the beginning and 119.5MB in the end (delta: 52.4MB). Free memory was 38.7MB in the beginning and 40.0MB in the end (delta: -1.3MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. [2022-07-21 08:44:08,291 INFO L158 Benchmark]: Witness Printer took 54.41ms. Allocated memory is still 119.5MB. Free memory was 40.0MB in the beginning and 36.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 08:44:08,293 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory was 36.3MB in the beginning and 36.2MB in the end (delta: 37.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 461.38ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 30.2MB in the beginning and 40.7MB in the end (delta: -10.4MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.84ms. Allocated memory is still 67.1MB. Free memory was 40.7MB in the beginning and 38.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.70ms. Allocated memory is still 67.1MB. Free memory was 38.7MB in the beginning and 37.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 390.69ms. Allocated memory is still 67.1MB. Free memory was 37.3MB in the beginning and 39.3MB in the end (delta: -2.0MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. * TraceAbstraction took 4658.10ms. Allocated memory was 67.1MB in the beginning and 119.5MB in the end (delta: 52.4MB). Free memory was 38.7MB in the beginning and 40.0MB in the end (delta: -1.3MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. * Witness Printer took 54.41ms. Allocated memory is still 119.5MB. Free memory was 40.0MB in the beginning and 36.9MB 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: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.5s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 413 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 413 mSDsluCounter, 602 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 592 mSDsCounter, 100 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 579 IncrementalHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 100 mSolverCounterUnsat, 142 mSDtfsCounter, 579 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=614occurred in iteration=7, InterpolantAutomatonStates: 113, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 612 NumberOfCodeBlocks, 612 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 602 ConstructedInterpolants, 0 QuantifiedInterpolants, 2554 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-21 08:44:08,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE