./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix043.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d28ebe0-9fdf-45bb-8b35-b71bea698dac/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d28ebe0-9fdf-45bb-8b35-b71bea698dac/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d28ebe0-9fdf-45bb-8b35-b71bea698dac/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d28ebe0-9fdf-45bb-8b35-b71bea698dac/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix043.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d28ebe0-9fdf-45bb-8b35-b71bea698dac/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d28ebe0-9fdf-45bb-8b35-b71bea698dac/bin/uautomizer-verify-VRDe98Ueme --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 9bfd96daa3950021158d7079dc25a62741fa5d5a7f9e521049c1a78760db50f1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:45:47,717 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:45:47,845 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d28ebe0-9fdf-45bb-8b35-b71bea698dac/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:45:47,852 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:45:47,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:45:47,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:45:47,888 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:45:47,888 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:45:47,889 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:45:47,890 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:45:47,891 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:45:47,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:45:47,892 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:45:47,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:45:47,893 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:45:47,894 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:45:47,895 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:45:47,895 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:45:47,896 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:45:47,896 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:45:47,897 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:45:47,898 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:45:47,898 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:45:47,899 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:45:47,899 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:45:47,900 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:45:47,900 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:45:47,901 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:45:47,901 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:45:47,902 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:45:47,902 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:45:47,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:45:47,903 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:45:47,904 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:45:47,904 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:45:47,904 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:45:47,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:45:47,905 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:45:47,906 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:45:47,906 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:45:47,907 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:45:47,907 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:45:47,908 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_4d28ebe0-9fdf-45bb-8b35-b71bea698dac/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d28ebe0-9fdf-45bb-8b35-b71bea698dac/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bfd96daa3950021158d7079dc25a62741fa5d5a7f9e521049c1a78760db50f1 [2023-11-26 10:45:48,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:45:48,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:45:48,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:45:48,208 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:45:48,209 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:45:48,210 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d28ebe0-9fdf-45bb-8b35-b71bea698dac/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/mix043.oepc.i [2023-11-26 10:45:51,491 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:45:51,790 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:45:51,790 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d28ebe0-9fdf-45bb-8b35-b71bea698dac/sv-benchmarks/c/pthread-wmm/mix043.oepc.i [2023-11-26 10:45:51,812 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d28ebe0-9fdf-45bb-8b35-b71bea698dac/bin/uautomizer-verify-VRDe98Ueme/data/c0caa1808/f1dae42e853b42e9a4178f0089f51be8/FLAGc47d26e2f [2023-11-26 10:45:51,832 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d28ebe0-9fdf-45bb-8b35-b71bea698dac/bin/uautomizer-verify-VRDe98Ueme/data/c0caa1808/f1dae42e853b42e9a4178f0089f51be8 [2023-11-26 10:45:51,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:45:51,840 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:45:51,841 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:45:51,841 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:45:51,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:45:51,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:45:51" (1/1) ... [2023-11-26 10:45:51,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ab85368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:51, skipping insertion in model container [2023-11-26 10:45:51,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:45:51" (1/1) ... [2023-11-26 10:45:51,921 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:45:52,110 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_4d28ebe0-9fdf-45bb-8b35-b71bea698dac/sv-benchmarks/c/pthread-wmm/mix043.oepc.i[945,958] [2023-11-26 10:45:52,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:45:52,427 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:45:52,440 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_4d28ebe0-9fdf-45bb-8b35-b71bea698dac/sv-benchmarks/c/pthread-wmm/mix043.oepc.i[945,958] [2023-11-26 10:45:52,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:45:52,576 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:45:52,577 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:45:52,585 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:45:52,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:52 WrapperNode [2023-11-26 10:45:52,586 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:45:52,588 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:45:52,588 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:45:52,588 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:45:52,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:52" (1/1) ... [2023-11-26 10:45:52,641 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:52" (1/1) ... [2023-11-26 10:45:52,711 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2023-11-26 10:45:52,711 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:45:52,713 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:45:52,713 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:45:52,713 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:45:52,729 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:52" (1/1) ... [2023-11-26 10:45:52,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:52" (1/1) ... [2023-11-26 10:45:52,746 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:52" (1/1) ... [2023-11-26 10:45:52,786 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-26 10:45:52,789 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:52" (1/1) ... [2023-11-26 10:45:52,789 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:52" (1/1) ... [2023-11-26 10:45:52,811 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:52" (1/1) ... [2023-11-26 10:45:52,815 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:52" (1/1) ... [2023-11-26 10:45:52,818 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:52" (1/1) ... [2023-11-26 10:45:52,829 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:52" (1/1) ... [2023-11-26 10:45:52,833 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:45:52,837 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:45:52,838 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:45:52,838 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:45:52,839 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:52" (1/1) ... [2023-11-26 10:45:52,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:45:52,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d28ebe0-9fdf-45bb-8b35-b71bea698dac/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:52,872 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d28ebe0-9fdf-45bb-8b35-b71bea698dac/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:45:52,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d28ebe0-9fdf-45bb-8b35-b71bea698dac/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:45:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:45:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:45:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:45:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:45:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 10:45:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 10:45:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:45:52,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:45:52,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:45:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 10:45:52,921 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 10:45:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 10:45:52,921 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 10:45:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 10:45:52,922 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 10:45:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-26 10:45:52,923 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-26 10:45:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:45:52,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:45:52,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:45:52,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:45:52,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 10:45:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 10:45:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:45:52,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:45:52,927 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:45:53,117 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:45:53,119 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:45:53,566 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:45:53,867 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:45:53,868 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:45:53,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:45:53 BoogieIcfgContainer [2023-11-26 10:45:53,868 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:45:53,871 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:45:53,871 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:45:53,874 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:45:53,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:45:51" (1/3) ... [2023-11-26 10:45:53,875 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54184c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:45:53, skipping insertion in model container [2023-11-26 10:45:53,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:52" (2/3) ... [2023-11-26 10:45:53,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54184c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:45:53, skipping insertion in model container [2023-11-26 10:45:53,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:45:53" (3/3) ... [2023-11-26 10:45:53,878 INFO L112 eAbstractionObserver]: Analyzing ICFG mix043.oepc.i [2023-11-26 10:45:53,887 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:45:53,898 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:45:53,899 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 10:45:53,899 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:45:53,959 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 10:45:53,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2023-11-26 10:45:54,052 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2023-11-26 10:45:54,052 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:45:54,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-26 10:45:54,058 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2023-11-26 10:45:54,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2023-11-26 10:45:54,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:45:54,101 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;@1d2686a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:45:54,102 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-26 10:45:54,107 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:45:54,107 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-26 10:45:54,108 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:45:54,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:54,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 10:45:54,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:54,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:54,120 INFO L85 PathProgramCache]: Analyzing trace with hash 12425846, now seen corresponding path program 1 times [2023-11-26 10:45:54,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:54,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729665995] [2023-11-26 10:45:54,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:54,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:54,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:54,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:54,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729665995] [2023-11-26 10:45:54,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729665995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:54,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:54,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:45:54,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619267732] [2023-11-26 10:45:54,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:54,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:45:54,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:54,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:45:54,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:54,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2023-11-26 10:45:54,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:54,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:54,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2023-11-26 10:45:54,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:55,826 INFO L124 PetriNetUnfolderBase]: 2495/3975 cut-off events. [2023-11-26 10:45:55,826 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-26 10:45:55,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7551 conditions, 3975 events. 2495/3975 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 24948 event pairs, 1647 based on Foata normal form. 135/4035 useless extension candidates. Maximal degree in co-relation 7539. Up to 2779 conditions per place. [2023-11-26 10:45:55,877 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 37 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2023-11-26 10:45:55,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 227 flow [2023-11-26 10:45:55,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:45:55,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:45:55,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-11-26 10:45:55,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2023-11-26 10:45:55,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-11-26 10:45:55,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-11-26 10:45:55,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:55,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-11-26 10:45:55,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:55,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:55,909 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:55,911 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 119 transitions. [2023-11-26 10:45:55,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 227 flow [2023-11-26 10:45:55,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 10:45:55,923 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2023-11-26 10:45:55,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2023-11-26 10:45:55,929 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2023-11-26 10:45:55,930 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2023-11-26 10:45:55,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:55,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:55,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:55,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:45:55,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:45:55,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:55,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1295638666, now seen corresponding path program 1 times [2023-11-26 10:45:55,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:55,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923435872] [2023-11-26 10:45:55,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:55,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:56,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:56,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923435872] [2023-11-26 10:45:56,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923435872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:56,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:56,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:45:56,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239242606] [2023-11-26 10:45:56,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:56,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:45:56,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:56,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:45:56,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:45:56,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2023-11-26 10:45:56,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:45:56,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:56,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2023-11-26 10:45:56,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:03,387 INFO L124 PetriNetUnfolderBase]: 27273/39264 cut-off events. [2023-11-26 10:46:03,388 INFO L125 PetriNetUnfolderBase]: For 1859/1859 co-relation queries the response was YES. [2023-11-26 10:46:03,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78181 conditions, 39264 events. 27273/39264 cut-off events. For 1859/1859 co-relation queries the response was YES. Maximal size of possible extension queue 1738. Compared 282529 event pairs, 6783 based on Foata normal form. 0/38324 useless extension candidates. Maximal degree in co-relation 78171. Up to 15294 conditions per place. [2023-11-26 10:46:03,666 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 48 selfloop transitions, 7 changer transitions 96/164 dead transitions. [2023-11-26 10:46:03,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 164 transitions, 662 flow [2023-11-26 10:46:03,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:46:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 10:46:03,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 306 transitions. [2023-11-26 10:46:03,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68 [2023-11-26 10:46:03,682 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 306 transitions. [2023-11-26 10:46:03,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 306 transitions. [2023-11-26 10:46:03,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:03,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 306 transitions. [2023-11-26 10:46:03,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 34.0) internal successors, (306), 9 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:03,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:03,695 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:03,695 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 306 transitions. [2023-11-26 10:46:03,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 164 transitions, 662 flow [2023-11-26 10:46:03,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 164 transitions, 644 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:46:03,706 INFO L231 Difference]: Finished difference. Result has 68 places, 48 transitions, 190 flow [2023-11-26 10:46:03,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=190, PETRI_PLACES=68, PETRI_TRANSITIONS=48} [2023-11-26 10:46:03,708 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2023-11-26 10:46:03,709 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 48 transitions, 190 flow [2023-11-26 10:46:03,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:03,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:03,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:03,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:46:03,710 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:46:03,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:03,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1397604523, now seen corresponding path program 1 times [2023-11-26 10:46:03,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:03,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692513368] [2023-11-26 10:46:03,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:03,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:04,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:04,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:04,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692513368] [2023-11-26 10:46:04,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692513368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:04,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:04,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:46:04,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466759710] [2023-11-26 10:46:04,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:04,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:46:04,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:04,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:46:04,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:46:04,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2023-11-26 10:46:04,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 48 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:04,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:04,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2023-11-26 10:46:04,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:08,123 INFO L124 PetriNetUnfolderBase]: 14559/22672 cut-off events. [2023-11-26 10:46:08,123 INFO L125 PetriNetUnfolderBase]: For 20140/21155 co-relation queries the response was YES. [2023-11-26 10:46:08,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59115 conditions, 22672 events. 14559/22672 cut-off events. For 20140/21155 co-relation queries the response was YES. Maximal size of possible extension queue 1149. Compared 174287 event pairs, 3783 based on Foata normal form. 746/22493 useless extension candidates. Maximal degree in co-relation 59097. Up to 12059 conditions per place. [2023-11-26 10:46:08,341 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 34 selfloop transitions, 3 changer transitions 43/101 dead transitions. [2023-11-26 10:46:08,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 101 transitions, 514 flow [2023-11-26 10:46:08,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:46:08,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 10:46:08,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2023-11-26 10:46:08,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6371428571428571 [2023-11-26 10:46:08,346 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 223 transitions. [2023-11-26 10:46:08,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 223 transitions. [2023-11-26 10:46:08,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:08,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 223 transitions. [2023-11-26 10:46:08,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 31.857142857142858) internal successors, (223), 7 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:08,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:08,351 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:08,351 INFO L175 Difference]: Start difference. First operand has 68 places, 48 transitions, 190 flow. Second operand 7 states and 223 transitions. [2023-11-26 10:46:08,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 101 transitions, 514 flow [2023-11-26 10:46:08,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 101 transitions, 464 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-11-26 10:46:08,795 INFO L231 Difference]: Finished difference. Result has 68 places, 48 transitions, 179 flow [2023-11-26 10:46:08,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=179, PETRI_PLACES=68, PETRI_TRANSITIONS=48} [2023-11-26 10:46:08,797 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2023-11-26 10:46:08,797 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 48 transitions, 179 flow [2023-11-26 10:46:08,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:08,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:08,798 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] [2023-11-26 10:46:08,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:46:08,798 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:46:08,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:08,799 INFO L85 PathProgramCache]: Analyzing trace with hash -822123412, now seen corresponding path program 1 times [2023-11-26 10:46:08,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:08,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618588360] [2023-11-26 10:46:08,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:08,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:09,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:09,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:09,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618588360] [2023-11-26 10:46:09,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618588360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:09,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:09,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:46:09,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245652781] [2023-11-26 10:46:09,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:09,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:46:09,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:09,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:46:09,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:46:09,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-26 10:46:09,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 48 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:09,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:09,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-26 10:46:09,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:14,267 INFO L124 PetriNetUnfolderBase]: 25866/38803 cut-off events. [2023-11-26 10:46:14,267 INFO L125 PetriNetUnfolderBase]: For 20326/25147 co-relation queries the response was YES. [2023-11-26 10:46:14,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90243 conditions, 38803 events. 25866/38803 cut-off events. For 20326/25147 co-relation queries the response was YES. Maximal size of possible extension queue 1742. Compared 287722 event pairs, 3879 based on Foata normal form. 1572/39121 useless extension candidates. Maximal degree in co-relation 90222. Up to 19547 conditions per place. [2023-11-26 10:46:14,699 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 56 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2023-11-26 10:46:14,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 82 transitions, 393 flow [2023-11-26 10:46:14,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:46:14,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:46:14,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2023-11-26 10:46:14,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.705 [2023-11-26 10:46:14,702 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 141 transitions. [2023-11-26 10:46:14,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 141 transitions. [2023-11-26 10:46:14,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:14,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 141 transitions. [2023-11-26 10:46:14,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:14,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:14,705 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:14,706 INFO L175 Difference]: Start difference. First operand has 68 places, 48 transitions, 179 flow. Second operand 4 states and 141 transitions. [2023-11-26 10:46:14,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 82 transitions, 393 flow [2023-11-26 10:46:14,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 82 transitions, 375 flow, removed 6 selfloop flow, removed 8 redundant places. [2023-11-26 10:46:14,989 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 207 flow [2023-11-26 10:46:14,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2023-11-26 10:46:14,991 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2023-11-26 10:46:14,992 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 207 flow [2023-11-26 10:46:14,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:14,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:14,993 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] [2023-11-26 10:46:14,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:46:14,993 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:46:14,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:14,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1984120784, now seen corresponding path program 1 times [2023-11-26 10:46:14,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:14,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970164510] [2023-11-26 10:46:14,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:14,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:15,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:15,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970164510] [2023-11-26 10:46:15,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970164510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:15,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:15,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:46:15,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78415045] [2023-11-26 10:46:15,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:15,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:46:15,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:15,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:46:15,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:46:15,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-26 10:46:15,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 207 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:15,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:15,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-26 10:46:15,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:19,627 INFO L124 PetriNetUnfolderBase]: 21458/32229 cut-off events. [2023-11-26 10:46:19,627 INFO L125 PetriNetUnfolderBase]: For 16481/20282 co-relation queries the response was YES. [2023-11-26 10:46:19,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82386 conditions, 32229 events. 21458/32229 cut-off events. For 16481/20282 co-relation queries the response was YES. Maximal size of possible extension queue 1392. Compared 229975 event pairs, 2283 based on Foata normal form. 1366/32548 useless extension candidates. Maximal degree in co-relation 82369. Up to 11420 conditions per place. [2023-11-26 10:46:19,891 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 73 selfloop transitions, 10 changer transitions 0/103 dead transitions. [2023-11-26 10:46:19,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 103 transitions, 526 flow [2023-11-26 10:46:19,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:46:19,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:46:19,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2023-11-26 10:46:19,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.724 [2023-11-26 10:46:19,893 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 181 transitions. [2023-11-26 10:46:19,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 181 transitions. [2023-11-26 10:46:19,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:19,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 181 transitions. [2023-11-26 10:46:19,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:19,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:19,896 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:19,896 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 207 flow. Second operand 5 states and 181 transitions. [2023-11-26 10:46:19,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 103 transitions, 526 flow [2023-11-26 10:46:19,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 103 transitions, 523 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:46:19,903 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 272 flow [2023-11-26 10:46:19,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2023-11-26 10:46:19,906 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2023-11-26 10:46:19,906 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 272 flow [2023-11-26 10:46:19,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:19,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:19,907 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, 1, 1, 1, 1] [2023-11-26 10:46:19,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:46:19,907 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:46:19,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:19,909 INFO L85 PathProgramCache]: Analyzing trace with hash -432317070, now seen corresponding path program 1 times [2023-11-26 10:46:19,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:19,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857011255] [2023-11-26 10:46:19,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:19,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:20,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:20,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:20,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857011255] [2023-11-26 10:46:20,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857011255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:20,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:20,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:46:20,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763347944] [2023-11-26 10:46:20,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:20,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:46:20,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:20,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:46:20,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:46:20,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2023-11-26 10:46:20,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:20,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:20,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2023-11-26 10:46:20,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:26,362 INFO L124 PetriNetUnfolderBase]: 23125/38366 cut-off events. [2023-11-26 10:46:26,362 INFO L125 PetriNetUnfolderBase]: For 28503/37343 co-relation queries the response was YES. [2023-11-26 10:46:26,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100592 conditions, 38366 events. 23125/38366 cut-off events. For 28503/37343 co-relation queries the response was YES. Maximal size of possible extension queue 2203. Compared 341204 event pairs, 8575 based on Foata normal form. 600/35720 useless extension candidates. Maximal degree in co-relation 100572. Up to 17417 conditions per place. [2023-11-26 10:46:26,676 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 86 selfloop transitions, 20 changer transitions 10/149 dead transitions. [2023-11-26 10:46:26,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 149 transitions, 782 flow [2023-11-26 10:46:26,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:46:26,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 10:46:26,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 335 transitions. [2023-11-26 10:46:26,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.67 [2023-11-26 10:46:26,679 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 335 transitions. [2023-11-26 10:46:26,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 335 transitions. [2023-11-26 10:46:26,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:26,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 335 transitions. [2023-11-26 10:46:26,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.5) internal successors, (335), 10 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:26,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:26,685 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:26,685 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 272 flow. Second operand 10 states and 335 transitions. [2023-11-26 10:46:26,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 149 transitions, 782 flow [2023-11-26 10:46:26,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 149 transitions, 767 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-26 10:46:26,701 INFO L231 Difference]: Finished difference. Result has 81 places, 78 transitions, 432 flow [2023-11-26 10:46:26,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=432, PETRI_PLACES=81, PETRI_TRANSITIONS=78} [2023-11-26 10:46:26,704 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2023-11-26 10:46:26,705 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 78 transitions, 432 flow [2023-11-26 10:46:26,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:26,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:26,705 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, 1, 1, 1, 1] [2023-11-26 10:46:26,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:46:26,706 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:46:26,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:26,706 INFO L85 PathProgramCache]: Analyzing trace with hash -611657896, now seen corresponding path program 2 times [2023-11-26 10:46:26,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:26,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8450142] [2023-11-26 10:46:26,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:26,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:27,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:27,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8450142] [2023-11-26 10:46:27,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8450142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:27,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:27,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:46:27,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63192961] [2023-11-26 10:46:27,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:27,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:46:27,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:27,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:46:27,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:46:27,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-26 10:46:27,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:27,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:27,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-26 10:46:27,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:34,200 INFO L124 PetriNetUnfolderBase]: 32332/47396 cut-off events. [2023-11-26 10:46:34,200 INFO L125 PetriNetUnfolderBase]: For 117476/125172 co-relation queries the response was YES. [2023-11-26 10:46:34,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167138 conditions, 47396 events. 32332/47396 cut-off events. For 117476/125172 co-relation queries the response was YES. Maximal size of possible extension queue 2108. Compared 340203 event pairs, 2239 based on Foata normal form. 1629/47205 useless extension candidates. Maximal degree in co-relation 167111. Up to 16544 conditions per place. [2023-11-26 10:46:34,820 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 125 selfloop transitions, 14 changer transitions 23/182 dead transitions. [2023-11-26 10:46:34,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 182 transitions, 1348 flow [2023-11-26 10:46:34,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:46:34,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:46:34,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 219 transitions. [2023-11-26 10:46:34,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.73 [2023-11-26 10:46:34,823 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 219 transitions. [2023-11-26 10:46:34,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 219 transitions. [2023-11-26 10:46:34,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:34,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 219 transitions. [2023-11-26 10:46:34,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:34,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:34,826 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:34,826 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 432 flow. Second operand 6 states and 219 transitions. [2023-11-26 10:46:34,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 182 transitions, 1348 flow [2023-11-26 10:46:34,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 182 transitions, 1346 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-26 10:46:34,933 INFO L231 Difference]: Finished difference. Result has 86 places, 74 transitions, 451 flow [2023-11-26 10:46:34,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=451, PETRI_PLACES=86, PETRI_TRANSITIONS=74} [2023-11-26 10:46:34,934 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2023-11-26 10:46:34,935 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 74 transitions, 451 flow [2023-11-26 10:46:34,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:34,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:34,936 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:34,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:46:34,936 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:46:34,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:34,937 INFO L85 PathProgramCache]: Analyzing trace with hash 2084014449, now seen corresponding path program 1 times [2023-11-26 10:46:34,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:34,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877399246] [2023-11-26 10:46:34,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:34,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:35,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:35,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:35,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877399246] [2023-11-26 10:46:35,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877399246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:35,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:35,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 10:46:35,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826116508] [2023-11-26 10:46:35,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:35,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:46:35,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:35,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:46:35,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:46:35,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2023-11-26 10:46:35,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 74 transitions, 451 flow. Second operand has 9 states, 9 states have (on average 24.11111111111111) internal successors, (217), 9 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:35,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:35,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2023-11-26 10:46:35,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand