./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b37f4f-a0ce-485e-91d8-fc7f10a3299a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b37f4f-a0ce-485e-91d8-fc7f10a3299a/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b37f4f-a0ce-485e-91d8-fc7f10a3299a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b37f4f-a0ce-485e-91d8-fc7f10a3299a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b37f4f-a0ce-485e-91d8-fc7f10a3299a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b37f4f-a0ce-485e-91d8-fc7f10a3299a/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 3edc5a2d9ce2881b3565fd36253c94b9cf356a0dafd043fa3f9d27823541c09b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:05:45,365 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:05:45,493 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b37f4f-a0ce-485e-91d8-fc7f10a3299a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:05:45,502 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:05:45,503 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:05:45,544 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:05:45,545 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:05:45,546 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:05:45,547 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:05:45,552 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:05:45,553 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:05:45,554 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:05:45,554 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:05:45,556 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:05:45,557 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:05:45,557 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:05:45,558 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:05:45,558 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:05:45,559 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:05:45,559 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:05:45,560 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:05:45,560 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:05:45,561 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:05:45,561 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:05:45,562 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:05:45,562 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:05:45,563 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:05:45,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:05:45,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:45,564 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:05:45,566 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:05:45,566 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:05:45,566 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:05:45,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:05:45,567 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:05:45,567 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:05:45,567 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:05:45,568 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:05:45,568 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:05:45,568 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b37f4f-a0ce-485e-91d8-fc7f10a3299a/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b37f4f-a0ce-485e-91d8-fc7f10a3299a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3edc5a2d9ce2881b3565fd36253c94b9cf356a0dafd043fa3f9d27823541c09b [2023-11-19 08:05:45,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:05:45,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:05:45,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:05:45,877 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:05:45,877 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:05:45,879 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b37f4f-a0ce-485e-91d8-fc7f10a3299a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe027_power.opt.i [2023-11-19 08:05:49,263 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:05:49,584 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:05:49,584 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b37f4f-a0ce-485e-91d8-fc7f10a3299a/sv-benchmarks/c/pthread-wmm/safe027_power.opt.i [2023-11-19 08:05:49,604 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b37f4f-a0ce-485e-91d8-fc7f10a3299a/bin/uautomizer-verify-uCwYo4JHxu/data/99e2d7f62/7634f7d8a12f496099513dd06bff132d/FLAGa718fbe8b [2023-11-19 08:05:49,619 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b37f4f-a0ce-485e-91d8-fc7f10a3299a/bin/uautomizer-verify-uCwYo4JHxu/data/99e2d7f62/7634f7d8a12f496099513dd06bff132d [2023-11-19 08:05:49,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:05:49,624 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:05:49,626 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:49,626 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:05:49,633 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:05:49,634 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:49" (1/1) ... [2023-11-19 08:05:49,635 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50045a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:49, skipping insertion in model container [2023-11-19 08:05:49,636 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:49" (1/1) ... [2023-11-19 08:05:49,700 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:05:49,890 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b37f4f-a0ce-485e-91d8-fc7f10a3299a/sv-benchmarks/c/pthread-wmm/safe027_power.opt.i[994,1007] [2023-11-19 08:05:50,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:50,319 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:05:50,335 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b37f4f-a0ce-485e-91d8-fc7f10a3299a/sv-benchmarks/c/pthread-wmm/safe027_power.opt.i[994,1007] [2023-11-19 08:05:50,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:50,501 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:05:50,501 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:05:50,519 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:05:50,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:50 WrapperNode [2023-11-19 08:05:50,520 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:50,521 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:50,522 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:05:50,523 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:05:50,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:50" (1/1) ... [2023-11-19 08:05:50,573 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:50" (1/1) ... [2023-11-19 08:05:50,633 INFO L138 Inliner]: procedures = 177, calls = 88, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 194 [2023-11-19 08:05:50,634 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:50,636 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:05:50,637 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:05:50,637 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:05:50,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:50" (1/1) ... [2023-11-19 08:05:50,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:50" (1/1) ... [2023-11-19 08:05:50,668 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:50" (1/1) ... [2023-11-19 08:05:50,673 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:50" (1/1) ... [2023-11-19 08:05:50,687 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:50" (1/1) ... [2023-11-19 08:05:50,706 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:50" (1/1) ... [2023-11-19 08:05:50,721 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:50" (1/1) ... [2023-11-19 08:05:50,724 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:50" (1/1) ... [2023-11-19 08:05:50,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:05:50,736 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:05:50,737 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:05:50,737 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:05:50,738 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:50" (1/1) ... [2023-11-19 08:05:50,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:50,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b37f4f-a0ce-485e-91d8-fc7f10a3299a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:50,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b37f4f-a0ce-485e-91d8-fc7f10a3299a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:05:50,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b37f4f-a0ce-485e-91d8-fc7f10a3299a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:05:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:05:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:05:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:05:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:05:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:05:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:05:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 08:05:50,821 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 08:05:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 08:05:50,822 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 08:05:50,822 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 08:05:50,822 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 08:05:50,822 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 08:05:50,823 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 08:05:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:05:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:05:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:05:50,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:05:50,825 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:05:51,058 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:05:51,060 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:05:51,754 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:05:52,145 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:05:52,146 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:05:52,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:52 BoogieIcfgContainer [2023-11-19 08:05:52,154 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:05:52,159 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:05:52,159 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:05:52,162 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:05:52,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:49" (1/3) ... [2023-11-19 08:05:52,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f697bcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:52, skipping insertion in model container [2023-11-19 08:05:52,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:50" (2/3) ... [2023-11-19 08:05:52,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f697bcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:52, skipping insertion in model container [2023-11-19 08:05:52,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:52" (3/3) ... [2023-11-19 08:05:52,165 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_power.opt.i [2023-11-19 08:05:52,174 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:05:52,185 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:05:52,186 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 08:05:52,186 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:05:52,284 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:05:52,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 151 transitions, 318 flow [2023-11-19 08:05:52,394 INFO L124 PetriNetUnfolderBase]: 3/147 cut-off events. [2023-11-19 08:05:52,394 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:05:52,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 147 events. 3/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 111. Up to 2 conditions per place. [2023-11-19 08:05:52,403 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 151 transitions, 318 flow [2023-11-19 08:05:52,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 147 transitions, 306 flow [2023-11-19 08:05:52,413 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:05:52,424 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 147 transitions, 306 flow [2023-11-19 08:05:52,426 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 147 transitions, 306 flow [2023-11-19 08:05:52,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 147 transitions, 306 flow [2023-11-19 08:05:52,465 INFO L124 PetriNetUnfolderBase]: 3/147 cut-off events. [2023-11-19 08:05:52,465 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:05:52,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 147 events. 3/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 111. Up to 2 conditions per place. [2023-11-19 08:05:52,470 INFO L119 LiptonReduction]: Number of co-enabled transitions 3162 [2023-11-19 08:06:04,544 INFO L134 LiptonReduction]: Checked pairs total: 6909 [2023-11-19 08:06:04,544 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-11-19 08:06:04,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:04,565 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2329a267, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:04,565 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 08:06:04,569 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:06:04,570 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-19 08:06:04,570 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:04,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:04,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:06:04,571 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:06:04,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash 951183126, now seen corresponding path program 1 times [2023-11-19 08:06:04,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:04,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681599621] [2023-11-19 08:06:04,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:04,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:05,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:05,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:05,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681599621] [2023-11-19 08:06:05,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681599621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:05,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:05,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:05,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276101041] [2023-11-19 08:06:05,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:05,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:05,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:05,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:05,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:05,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 286 [2023-11-19 08:06:05,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:05,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:05,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 286 [2023-11-19 08:06:05,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:06,960 INFO L124 PetriNetUnfolderBase]: 3927/5384 cut-off events. [2023-11-19 08:06:06,961 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-19 08:06:06,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10936 conditions, 5384 events. 3927/5384 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 24816 event pairs, 1069 based on Foata normal form. 0/5124 useless extension candidates. Maximal degree in co-relation 10924. Up to 4291 conditions per place. [2023-11-19 08:06:07,013 INFO L140 encePairwiseOnDemand]: 283/286 looper letters, 37 selfloop transitions, 2 changer transitions 2/42 dead transitions. [2023-11-19 08:06:07,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 184 flow [2023-11-19 08:06:07,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:07,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:07,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2023-11-19 08:06:07,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513986013986014 [2023-11-19 08:06:07,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2023-11-19 08:06:07,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2023-11-19 08:06:07,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:07,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2023-11-19 08:06:07,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:07,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:07,063 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:07,065 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 64 flow. Second operand 3 states and 441 transitions. [2023-11-19 08:06:07,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 184 flow [2023-11-19 08:06:07,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 178 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 08:06:07,074 INFO L231 Difference]: Finished difference. Result has 36 places, 24 transitions, 60 flow [2023-11-19 08:06:07,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2023-11-19 08:06:07,083 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -3 predicate places. [2023-11-19 08:06:07,083 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 60 flow [2023-11-19 08:06:07,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:07,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:07,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:07,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:06:07,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:06:07,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:07,096 INFO L85 PathProgramCache]: Analyzing trace with hash -192371422, now seen corresponding path program 1 times [2023-11-19 08:06:07,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:07,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008050214] [2023-11-19 08:06:07,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:07,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:07,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:07,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008050214] [2023-11-19 08:06:07,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008050214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:07,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:07,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:07,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336542559] [2023-11-19 08:06:07,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:07,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:07,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:07,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:07,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:07,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 286 [2023-11-19 08:06:07,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:07,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:07,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 286 [2023-11-19 08:06:07,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:08,742 INFO L124 PetriNetUnfolderBase]: 2951/4304 cut-off events. [2023-11-19 08:06:08,744 INFO L125 PetriNetUnfolderBase]: For 277/277 co-relation queries the response was YES. [2023-11-19 08:06:08,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8838 conditions, 4304 events. 2951/4304 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 20814 event pairs, 599 based on Foata normal form. 64/4368 useless extension candidates. Maximal degree in co-relation 8828. Up to 3345 conditions per place. [2023-11-19 08:06:08,782 INFO L140 encePairwiseOnDemand]: 283/286 looper letters, 34 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-11-19 08:06:08,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 37 transitions, 162 flow [2023-11-19 08:06:08,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:08,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:08,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions. [2023-11-19 08:06:08,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116550116550117 [2023-11-19 08:06:08,786 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 439 transitions. [2023-11-19 08:06:08,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 439 transitions. [2023-11-19 08:06:08,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:08,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 439 transitions. [2023-11-19 08:06:08,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:08,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:08,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:08,827 INFO L175 Difference]: Start difference. First operand has 36 places, 24 transitions, 60 flow. Second operand 3 states and 439 transitions. [2023-11-19 08:06:08,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 37 transitions, 162 flow [2023-11-19 08:06:08,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:06:08,831 INFO L231 Difference]: Finished difference. Result has 36 places, 24 transitions, 64 flow [2023-11-19 08:06:08,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2023-11-19 08:06:08,832 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -3 predicate places. [2023-11-19 08:06:08,833 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 64 flow [2023-11-19 08:06:08,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:08,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:08,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:08,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:06:08,834 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:06:08,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:08,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1668548156, now seen corresponding path program 1 times [2023-11-19 08:06:08,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:08,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598527561] [2023-11-19 08:06:08,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:08,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:09,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:09,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:09,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598527561] [2023-11-19 08:06:09,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598527561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:09,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:09,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:09,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915144398] [2023-11-19 08:06:09,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:09,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:09,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:09,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:09,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:09,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 286 [2023-11-19 08:06:09,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:09,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:09,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 286 [2023-11-19 08:06:09,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:10,296 INFO L124 PetriNetUnfolderBase]: 2799/3884 cut-off events. [2023-11-19 08:06:10,297 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2023-11-19 08:06:10,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8531 conditions, 3884 events. 2799/3884 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 18634 event pairs, 519 based on Foata normal form. 48/3928 useless extension candidates. Maximal degree in co-relation 8520. Up to 3223 conditions per place. [2023-11-19 08:06:10,330 INFO L140 encePairwiseOnDemand]: 283/286 looper letters, 38 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-11-19 08:06:10,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 187 flow [2023-11-19 08:06:10,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:10,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:10,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2023-11-19 08:06:10,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5093240093240093 [2023-11-19 08:06:10,334 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2023-11-19 08:06:10,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2023-11-19 08:06:10,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:10,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2023-11-19 08:06:10,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:10,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:10,340 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:10,340 INFO L175 Difference]: Start difference. First operand has 36 places, 24 transitions, 64 flow. Second operand 3 states and 437 transitions. [2023-11-19 08:06:10,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 187 flow [2023-11-19 08:06:10,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 181 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:06:10,343 INFO L231 Difference]: Finished difference. Result has 37 places, 24 transitions, 68 flow [2023-11-19 08:06:10,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2023-11-19 08:06:10,345 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2023-11-19 08:06:10,348 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 68 flow [2023-11-19 08:06:10,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:10,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:10,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:10,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:06:10,351 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:06:10,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:10,351 INFO L85 PathProgramCache]: Analyzing trace with hash 125001053, now seen corresponding path program 1 times [2023-11-19 08:06:10,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:10,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496913524] [2023-11-19 08:06:10,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:10,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:10,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:10,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:10,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496913524] [2023-11-19 08:06:10,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496913524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:10,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:10,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:10,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213465366] [2023-11-19 08:06:10,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:10,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:06:10,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:10,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:06:10,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:06:10,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 286 [2023-11-19 08:06:10,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 132.6) internal successors, (663), 5 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:10,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:10,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 286 [2023-11-19 08:06:10,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:12,579 INFO L124 PetriNetUnfolderBase]: 3768/5261 cut-off events. [2023-11-19 08:06:12,580 INFO L125 PetriNetUnfolderBase]: For 845/845 co-relation queries the response was YES. [2023-11-19 08:06:12,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11698 conditions, 5261 events. 3768/5261 cut-off events. For 845/845 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 25108 event pairs, 783 based on Foata normal form. 144/5389 useless extension candidates. Maximal degree in co-relation 11686. Up to 2112 conditions per place. [2023-11-19 08:06:12,704 INFO L140 encePairwiseOnDemand]: 282/286 looper letters, 38 selfloop transitions, 3 changer transitions 5/47 dead transitions. [2023-11-19 08:06:12,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 47 transitions, 211 flow [2023-11-19 08:06:12,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:06:12,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:06:12,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 568 transitions. [2023-11-19 08:06:12,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965034965034965 [2023-11-19 08:06:12,708 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 568 transitions. [2023-11-19 08:06:12,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 568 transitions. [2023-11-19 08:06:12,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:12,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 568 transitions. [2023-11-19 08:06:12,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:12,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 286.0) internal successors, (1430), 5 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:12,716 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 286.0) internal successors, (1430), 5 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:12,716 INFO L175 Difference]: Start difference. First operand has 37 places, 24 transitions, 68 flow. Second operand 4 states and 568 transitions. [2023-11-19 08:06:12,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 47 transitions, 211 flow [2023-11-19 08:06:12,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 47 transitions, 205 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:06:12,719 INFO L231 Difference]: Finished difference. Result has 40 places, 24 transitions, 78 flow [2023-11-19 08:06:12,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=40, PETRI_TRANSITIONS=24} [2023-11-19 08:06:12,721 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-11-19 08:06:12,721 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 24 transitions, 78 flow [2023-11-19 08:06:12,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.6) internal successors, (663), 5 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:12,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:12,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:12,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:06:12,723 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:06:12,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:12,724 INFO L85 PathProgramCache]: Analyzing trace with hash -419919717, now seen corresponding path program 1 times [2023-11-19 08:06:12,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:12,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502805813] [2023-11-19 08:06:12,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:12,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:14,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:14,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:14,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502805813] [2023-11-19 08:06:14,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502805813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:14,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:14,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:06:14,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013577693] [2023-11-19 08:06:14,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:14,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:06:14,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:14,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:06:14,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:06:14,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 286 [2023-11-19 08:06:14,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 24 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 125.33333333333333) internal successors, (752), 6 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:14,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:14,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 286 [2023-11-19 08:06:14,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:15,251 INFO L124 PetriNetUnfolderBase]: 1986/2843 cut-off events. [2023-11-19 08:06:15,251 INFO L125 PetriNetUnfolderBase]: For 1359/1359 co-relation queries the response was YES. [2023-11-19 08:06:15,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6799 conditions, 2843 events. 1986/2843 cut-off events. For 1359/1359 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12962 event pairs, 728 based on Foata normal form. 6/2849 useless extension candidates. Maximal degree in co-relation 6785. Up to 2667 conditions per place. [2023-11-19 08:06:15,276 INFO L140 encePairwiseOnDemand]: 278/286 looper letters, 47 selfloop transitions, 11 changer transitions 0/59 dead transitions. [2023-11-19 08:06:15,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 59 transitions, 297 flow [2023-11-19 08:06:15,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:06:15,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:06:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 675 transitions. [2023-11-19 08:06:15,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47202797202797203 [2023-11-19 08:06:15,280 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 675 transitions. [2023-11-19 08:06:15,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 675 transitions. [2023-11-19 08:06:15,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:15,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 675 transitions. [2023-11-19 08:06:15,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:15,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:15,289 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:15,290 INFO L175 Difference]: Start difference. First operand has 40 places, 24 transitions, 78 flow. Second operand 5 states and 675 transitions. [2023-11-19 08:06:15,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 59 transitions, 297 flow [2023-11-19 08:06:15,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 59 transitions, 265 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-19 08:06:15,296 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 136 flow [2023-11-19 08:06:15,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2023-11-19 08:06:15,297 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-11-19 08:06:15,297 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 136 flow [2023-11-19 08:06:15,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.33333333333333) internal successors, (752), 6 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:15,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:15,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:15,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:06:15,299 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:06:15,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:15,300 INFO L85 PathProgramCache]: Analyzing trace with hash 603198949, now seen corresponding path program 1 times [2023-11-19 08:06:15,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:15,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150810282] [2023-11-19 08:06:15,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:15,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:15,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:15,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:15,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150810282] [2023-11-19 08:06:15,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150810282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:15,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:15,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:15,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860250455] [2023-11-19 08:06:15,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:15,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:15,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:15,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:15,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:15,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 286 [2023-11-19 08:06:15,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:15,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:15,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 286 [2023-11-19 08:06:15,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:16,404 INFO L124 PetriNetUnfolderBase]: 1854/2706 cut-off events. [2023-11-19 08:06:16,405 INFO L125 PetriNetUnfolderBase]: For 1620/1625 co-relation queries the response was YES. [2023-11-19 08:06:16,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7495 conditions, 2706 events. 1854/2706 cut-off events. For 1620/1625 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 12662 event pairs, 264 based on Foata normal form. 213/2916 useless extension candidates. Maximal degree in co-relation 7481. Up to 1294 conditions per place. [2023-11-19 08:06:16,425 INFO L140 encePairwiseOnDemand]: 279/286 looper letters, 73 selfloop transitions, 6 changer transitions 1/81 dead transitions. [2023-11-19 08:06:16,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 81 transitions, 484 flow [2023-11-19 08:06:16,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:06:16,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:06:16,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 562 transitions. [2023-11-19 08:06:16,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49125874125874125 [2023-11-19 08:06:16,429 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 562 transitions. [2023-11-19 08:06:16,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 562 transitions. [2023-11-19 08:06:16,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:16,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 562 transitions. [2023-11-19 08:06:16,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:16,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 286.0) internal successors, (1430), 5 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:16,436 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 286.0) internal successors, (1430), 5 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:16,436 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 136 flow. Second operand 4 states and 562 transitions. [2023-11-19 08:06:16,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 81 transitions, 484 flow [2023-11-19 08:06:16,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 81 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:06:16,441 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 178 flow [2023-11-19 08:06:16,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2023-11-19 08:06:16,442 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2023-11-19 08:06:16,442 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 178 flow [2023-11-19 08:06:16,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:16,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:16,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:16,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:06:16,443 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:06:16,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:16,444 INFO L85 PathProgramCache]: Analyzing trace with hash 817110048, now seen corresponding path program 1 times [2023-11-19 08:06:16,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:16,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137923236] [2023-11-19 08:06:16,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:16,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:19,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:19,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:19,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137923236] [2023-11-19 08:06:19,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137923236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:19,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:19,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:06:19,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921350216] [2023-11-19 08:06:19,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:19,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:06:19,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:19,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:06:19,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:06:19,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 286 [2023-11-19 08:06:19,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 123.28571428571429) internal successors, (863), 7 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:19,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:19,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 286 [2023-11-19 08:06:19,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:20,173 INFO L124 PetriNetUnfolderBase]: 1429/2110 cut-off events. [2023-11-19 08:06:20,173 INFO L125 PetriNetUnfolderBase]: For 2053/2071 co-relation queries the response was YES. [2023-11-19 08:06:20,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7141 conditions, 2110 events. 1429/2110 cut-off events. For 2053/2071 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9265 event pairs, 652 based on Foata normal form. 26/2136 useless extension candidates. Maximal degree in co-relation 7123. Up to 1914 conditions per place. [2023-11-19 08:06:20,195 INFO L140 encePairwiseOnDemand]: 276/286 looper letters, 64 selfloop transitions, 18 changer transitions 0/83 dead transitions. [2023-11-19 08:06:20,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 83 transitions, 534 flow [2023-11-19 08:06:20,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:06:20,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:06:20,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 668 transitions. [2023-11-19 08:06:20,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671328671328671 [2023-11-19 08:06:20,200 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 668 transitions. [2023-11-19 08:06:20,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 668 transitions. [2023-11-19 08:06:20,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:20,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 668 transitions. [2023-11-19 08:06:20,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.6) internal successors, (668), 5 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:20,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:20,208 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:20,208 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 178 flow. Second operand 5 states and 668 transitions. [2023-11-19 08:06:20,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 83 transitions, 534 flow [2023-11-19 08:06:20,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 83 transitions, 507 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-19 08:06:20,216 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 308 flow [2023-11-19 08:06:20,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2023-11-19 08:06:20,217 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2023-11-19 08:06:20,218 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 308 flow [2023-11-19 08:06:20,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 123.28571428571429) internal successors, (863), 7 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:20,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:20,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:20,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:06:20,219 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:06:20,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:20,220 INFO L85 PathProgramCache]: Analyzing trace with hash -81699525, now seen corresponding path program 1 times [2023-11-19 08:06:20,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:20,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815874563] [2023-11-19 08:06:20,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:20,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:20,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:20,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:20,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815874563] [2023-11-19 08:06:20,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815874563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:20,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:20,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:06:20,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905360793] [2023-11-19 08:06:20,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:20,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:06:20,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:20,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:06:20,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:06:20,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 286 [2023-11-19 08:06:20,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:20,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:20,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 286 [2023-11-19 08:06:20,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:21,155 INFO L124 PetriNetUnfolderBase]: 1082/1665 cut-off events. [2023-11-19 08:06:21,155 INFO L125 PetriNetUnfolderBase]: For 2860/2860 co-relation queries the response was YES. [2023-11-19 08:06:21,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6194 conditions, 1665 events. 1082/1665 cut-off events. For 2860/2860 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7481 event pairs, 101 based on Foata normal form. 151/1815 useless extension candidates. Maximal degree in co-relation 6173. Up to 572 conditions per place. [2023-11-19 08:06:21,169 INFO L140 encePairwiseOnDemand]: 279/286 looper letters, 106 selfloop transitions, 10 changer transitions 1/118 dead transitions. [2023-11-19 08:06:21,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 118 transitions, 935 flow [2023-11-19 08:06:21,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:06:21,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:06:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 703 transitions. [2023-11-19 08:06:21,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4916083916083916 [2023-11-19 08:06:21,178 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 703 transitions. [2023-11-19 08:06:21,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 703 transitions. [2023-11-19 08:06:21,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:21,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 703 transitions. [2023-11-19 08:06:21,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.6) internal successors, (703), 5 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:21,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:21,187 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:21,188 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 308 flow. Second operand 5 states and 703 transitions. [2023-11-19 08:06:21,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 118 transitions, 935 flow [2023-11-19 08:06:21,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 118 transitions, 917 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-19 08:06:21,196 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 365 flow [2023-11-19 08:06:21,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=365, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2023-11-19 08:06:21,200 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 18 predicate places. [2023-11-19 08:06:21,201 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 365 flow [2023-11-19 08:06:21,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:21,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:21,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:21,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:06:21,202 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:06:21,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:21,203 INFO L85 PathProgramCache]: Analyzing trace with hash -103600060, now seen corresponding path program 1 times [2023-11-19 08:06:21,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:21,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551571321] [2023-11-19 08:06:21,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:21,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:21,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:21,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:21,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551571321] [2023-11-19 08:06:21,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551571321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:21,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:21,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:06:21,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305350220] [2023-11-19 08:06:21,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:21,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:06:21,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:21,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:06:21,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:06:21,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 286 [2023-11-19 08:06:21,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 365 flow. Second operand has 6 states, 6 states have (on average 130.16666666666666) internal successors, (781), 6 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:21,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:21,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 286 [2023-11-19 08:06:21,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:22,052 INFO L124 PetriNetUnfolderBase]: 615/984 cut-off events. [2023-11-19 08:06:22,052 INFO L125 PetriNetUnfolderBase]: For 2201/2201 co-relation queries the response was YES. [2023-11-19 08:06:22,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4178 conditions, 984 events. 615/984 cut-off events. For 2201/2201 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4066 event pairs, 99 based on Foata normal form. 59/1040 useless extension candidates. Maximal degree in co-relation 4154. Up to 304 conditions per place. [2023-11-19 08:06:22,062 INFO L140 encePairwiseOnDemand]: 279/286 looper letters, 105 selfloop transitions, 14 changer transitions 1/121 dead transitions. [2023-11-19 08:06:22,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 121 transitions, 984 flow [2023-11-19 08:06:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:06:22,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:06:22,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 840 transitions. [2023-11-19 08:06:22,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48951048951048953 [2023-11-19 08:06:22,066 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 840 transitions. [2023-11-19 08:06:22,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 840 transitions. [2023-11-19 08:06:22,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:22,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 840 transitions. [2023-11-19 08:06:22,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:22,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:22,075 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:22,075 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 365 flow. Second operand 6 states and 840 transitions. [2023-11-19 08:06:22,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 121 transitions, 984 flow [2023-11-19 08:06:22,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 121 transitions, 937 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-19 08:06:22,087 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 396 flow [2023-11-19 08:06:22,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=396, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2023-11-19 08:06:22,088 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 20 predicate places. [2023-11-19 08:06:22,088 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 396 flow [2023-11-19 08:06:22,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.16666666666666) internal successors, (781), 6 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:22,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:22,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:22,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:06:22,089 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:06:22,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:22,090 INFO L85 PathProgramCache]: Analyzing trace with hash -908011546, now seen corresponding path program 1 times [2023-11-19 08:06:22,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:22,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271604149] [2023-11-19 08:06:22,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:22,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:25,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:25,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:25,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271604149] [2023-11-19 08:06:25,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271604149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:25,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:25,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 08:06:25,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421015328] [2023-11-19 08:06:25,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:25,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 08:06:25,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:25,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 08:06:25,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:06:25,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 286 [2023-11-19 08:06:25,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 396 flow. Second operand has 11 states, 11 states have (on average 119.9090909090909) internal successors, (1319), 11 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:25,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:25,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 286 [2023-11-19 08:06:25,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:26,551 INFO L124 PetriNetUnfolderBase]: 835/1377 cut-off events. [2023-11-19 08:06:26,551 INFO L125 PetriNetUnfolderBase]: For 3339/3339 co-relation queries the response was YES. [2023-11-19 08:06:26,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5873 conditions, 1377 events. 835/1377 cut-off events. For 3339/3339 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6690 event pairs, 55 based on Foata normal form. 1/1377 useless extension candidates. Maximal degree in co-relation 5849. Up to 550 conditions per place. [2023-11-19 08:06:26,566 INFO L140 encePairwiseOnDemand]: 277/286 looper letters, 134 selfloop transitions, 25 changer transitions 0/160 dead transitions. [2023-11-19 08:06:26,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 160 transitions, 1440 flow [2023-11-19 08:06:26,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:06:26,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 08:06:26,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1036 transitions. [2023-11-19 08:06:26,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527972027972028 [2023-11-19 08:06:26,572 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1036 transitions. [2023-11-19 08:06:26,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1036 transitions. [2023-11-19 08:06:26,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:26,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1036 transitions. [2023-11-19 08:06:26,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.5) internal successors, (1036), 8 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:26,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 286.0) internal successors, (2574), 9 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:26,584 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 286.0) internal successors, (2574), 9 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:26,585 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 396 flow. Second operand 8 states and 1036 transitions. [2023-11-19 08:06:26,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 160 transitions, 1440 flow [2023-11-19 08:06:26,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 160 transitions, 1217 flow, removed 46 selfloop flow, removed 6 redundant places. [2023-11-19 08:06:26,603 INFO L231 Difference]: Finished difference. Result has 65 places, 71 transitions, 536 flow [2023-11-19 08:06:26,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=536, PETRI_PLACES=65, PETRI_TRANSITIONS=71} [2023-11-19 08:06:26,604 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2023-11-19 08:06:26,604 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 71 transitions, 536 flow [2023-11-19 08:06:26,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 119.9090909090909) internal successors, (1319), 11 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:26,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:26,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:26,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:06:26,606 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:06:26,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:26,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1999278916, now seen corresponding path program 2 times [2023-11-19 08:06:26,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:26,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552541683] [2023-11-19 08:06:26,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:26,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:26,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:26,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552541683] [2023-11-19 08:06:26,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552541683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:26,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:26,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:06:26,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178037103] [2023-11-19 08:06:26,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:26,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:06:26,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:26,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:06:26,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:06:26,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 286 [2023-11-19 08:06:26,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 71 transitions, 536 flow. Second operand has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:26,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:26,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 286 [2023-11-19 08:06:26,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:27,567 INFO L124 PetriNetUnfolderBase]: 801/1279 cut-off events. [2023-11-19 08:06:27,567 INFO L125 PetriNetUnfolderBase]: For 4335/4335 co-relation queries the response was YES. [2023-11-19 08:06:27,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5661 conditions, 1279 events. 801/1279 cut-off events. For 4335/4335 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5697 event pairs, 110 based on Foata normal form. 24/1302 useless extension candidates. Maximal degree in co-relation 5635. Up to 503 conditions per place. [2023-11-19 08:06:27,579 INFO L140 encePairwiseOnDemand]: 279/286 looper letters, 118 selfloop transitions, 18 changer transitions 1/138 dead transitions. [2023-11-19 08:06:27,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 138 transitions, 1312 flow [2023-11-19 08:06:27,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:06:27,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:06:27,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 956 transitions. [2023-11-19 08:06:27,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775224775224775 [2023-11-19 08:06:27,584 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 956 transitions. [2023-11-19 08:06:27,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 956 transitions. [2023-11-19 08:06:27,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:27,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 956 transitions. [2023-11-19 08:06:27,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 136.57142857142858) internal successors, (956), 7 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:27,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 286.0) internal successors, (2288), 8 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:27,594 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 286.0) internal successors, (2288), 8 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:27,594 INFO L175 Difference]: Start difference. First operand has 65 places, 71 transitions, 536 flow. Second operand 7 states and 956 transitions. [2023-11-19 08:06:27,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 138 transitions, 1312 flow [2023-11-19 08:06:27,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 138 transitions, 1196 flow, removed 36 selfloop flow, removed 5 redundant places. [2023-11-19 08:06:27,613 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 504 flow [2023-11-19 08:06:27,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=504, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2023-11-19 08:06:27,614 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 28 predicate places. [2023-11-19 08:06:27,614 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 504 flow [2023-11-19 08:06:27,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:27,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:27,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:27,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:06:27,615 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:06:27,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:27,616 INFO L85 PathProgramCache]: Analyzing trace with hash -879005479, now seen corresponding path program 1 times [2023-11-19 08:06:27,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:27,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748952498] [2023-11-19 08:06:27,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:27,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:27,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:27,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748952498] [2023-11-19 08:06:27,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748952498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:27,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:27,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:27,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060775933] [2023-11-19 08:06:27,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:27,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:27,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:27,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:27,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:27,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 286 [2023-11-19 08:06:27,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 504 flow. Second operand has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:27,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:27,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 286 [2023-11-19 08:06:27,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:28,633 INFO L124 PetriNetUnfolderBase]: 1633/2531 cut-off events. [2023-11-19 08:06:28,634 INFO L125 PetriNetUnfolderBase]: For 7849/7849 co-relation queries the response was YES. [2023-11-19 08:06:28,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11163 conditions, 2531 events. 1633/2531 cut-off events. For 7849/7849 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 12350 event pairs, 332 based on Foata normal form. 1/2532 useless extension candidates. Maximal degree in co-relation 11136. Up to 1285 conditions per place. [2023-11-19 08:06:28,653 INFO L140 encePairwiseOnDemand]: 283/286 looper letters, 79 selfloop transitions, 1 changer transitions 55/135 dead transitions. [2023-11-19 08:06:28,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 135 transitions, 1346 flow [2023-11-19 08:06:28,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:06:28,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:06:28,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 564 transitions. [2023-11-19 08:06:28,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.493006993006993 [2023-11-19 08:06:28,657 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 564 transitions. [2023-11-19 08:06:28,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 564 transitions. [2023-11-19 08:06:28,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:28,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 564 transitions. [2023-11-19 08:06:28,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:28,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 286.0) internal successors, (1430), 5 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:28,664 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 286.0) internal successors, (1430), 5 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:28,664 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 504 flow. Second operand 4 states and 564 transitions. [2023-11-19 08:06:28,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 135 transitions, 1346 flow [2023-11-19 08:06:28,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 135 transitions, 1101 flow, removed 52 selfloop flow, removed 11 redundant places. [2023-11-19 08:06:28,701 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 376 flow [2023-11-19 08:06:28,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=376, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2023-11-19 08:06:28,702 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 22 predicate places. [2023-11-19 08:06:28,702 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 376 flow [2023-11-19 08:06:28,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:28,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:28,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:28,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 08:06:28,703 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 08:06:28,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:28,704 INFO L85 PathProgramCache]: Analyzing trace with hash 963618147, now seen corresponding path program 2 times [2023-11-19 08:06:28,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:28,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238714585] [2023-11-19 08:06:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:28,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat