./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_4739d42b-f783-48f2-abdd-0169aa3abaa6/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4739d42b-f783-48f2-abdd-0169aa3abaa6/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_4739d42b-f783-48f2-abdd-0169aa3abaa6/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4739d42b-f783-48f2-abdd-0169aa3abaa6/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4739d42b-f783-48f2-abdd-0169aa3abaa6/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_4739d42b-f783-48f2-abdd-0169aa3abaa6/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 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:53:03,998 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:53:04,110 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4739d42b-f783-48f2-abdd-0169aa3abaa6/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:53:04,114 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:53:04,115 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:53:04,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:53:04,140 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:53:04,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:53:04,142 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:53:04,144 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:53:04,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:53:04,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:53:04,147 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:53:04,152 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:53:04,152 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:53:04,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:53:04,153 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:53:04,154 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:53:04,154 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:53:04,154 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:53:04,155 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:53:04,155 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:53:04,157 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:53:04,158 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:53:04,158 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:53:04,158 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:53:04,159 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:53:04,160 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:53:04,160 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:53:04,161 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:53:04,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:53:04,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:53:04,162 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:53:04,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:53:04,163 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:53:04,163 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:53:04,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:53:04,164 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:53:04,164 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:53:04,164 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:53:04,165 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:53:04,165 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:53:04,165 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_4739d42b-f783-48f2-abdd-0169aa3abaa6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4739d42b-f783-48f2-abdd-0169aa3abaa6/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 [2023-11-26 11:53:04,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:53:04,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:53:04,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:53:04,475 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:53:04,475 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:53:04,477 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4739d42b-f783-48f2-abdd-0169aa3abaa6/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-26 11:53:07,643 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:53:08,007 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:53:08,009 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4739d42b-f783-48f2-abdd-0169aa3abaa6/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-26 11:53:08,034 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4739d42b-f783-48f2-abdd-0169aa3abaa6/bin/uautomizer-verify-VRDe98Ueme/data/7d521cbba/62bee40bf31f47579c777970642aa983/FLAGa64a1bea5 [2023-11-26 11:53:08,054 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4739d42b-f783-48f2-abdd-0169aa3abaa6/bin/uautomizer-verify-VRDe98Ueme/data/7d521cbba/62bee40bf31f47579c777970642aa983 [2023-11-26 11:53:08,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:53:08,064 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:53:08,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:53:08,071 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:53:08,078 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:53:08,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:53:08" (1/1) ... [2023-11-26 11:53:08,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e437b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:08, skipping insertion in model container [2023-11-26 11:53:08,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:53:08" (1/1) ... [2023-11-26 11:53:08,141 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:53:08,307 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_4739d42b-f783-48f2-abdd-0169aa3abaa6/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-26 11:53:08,483 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:53:08,493 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:53:08,506 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_4739d42b-f783-48f2-abdd-0169aa3abaa6/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-26 11:53:08,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:53:08,599 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:53:08,600 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:53:08,607 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:53:08,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:08 WrapperNode [2023-11-26 11:53:08,608 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:53:08,610 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:53:08,610 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:53:08,610 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:53:08,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:08" (1/1) ... [2023-11-26 11:53:08,657 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:08" (1/1) ... [2023-11-26 11:53:08,687 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2023-11-26 11:53:08,688 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:53:08,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:53:08,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:53:08,689 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:53:08,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:08" (1/1) ... [2023-11-26 11:53:08,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:08" (1/1) ... [2023-11-26 11:53:08,714 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:08" (1/1) ... [2023-11-26 11:53:08,745 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-26 11:53:08,747 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:08" (1/1) ... [2023-11-26 11:53:08,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:08" (1/1) ... [2023-11-26 11:53:08,758 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:08" (1/1) ... [2023-11-26 11:53:08,760 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:08" (1/1) ... [2023-11-26 11:53:08,766 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:08" (1/1) ... [2023-11-26 11:53:08,774 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:08" (1/1) ... [2023-11-26 11:53:08,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:53:08,780 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:53:08,781 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:53:08,781 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:53:08,782 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:08" (1/1) ... [2023-11-26 11:53:08,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:53:08,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4739d42b-f783-48f2-abdd-0169aa3abaa6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:08,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4739d42b-f783-48f2-abdd-0169aa3abaa6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:53:08,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4739d42b-f783-48f2-abdd-0169aa3abaa6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:53:08,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:53:08,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:53:08,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:53:08,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:53:08,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 11:53:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:53:08,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:53:08,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:53:08,866 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 11:53:08,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 11:53:08,866 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 11:53:08,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 11:53:08,866 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 11:53:08,867 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 11:53:08,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:53:08,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:53:08,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:53:08,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:53:08,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 11:53:08,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:53:08,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:53:08,871 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 11:53:09,098 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:53:09,102 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:53:09,319 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:53:09,405 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:53:09,405 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:53:09,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:09 BoogieIcfgContainer [2023-11-26 11:53:09,406 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:53:09,409 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:53:09,409 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:53:09,412 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:53:09,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:53:08" (1/3) ... [2023-11-26 11:53:09,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b00ab88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:53:09, skipping insertion in model container [2023-11-26 11:53:09,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:08" (2/3) ... [2023-11-26 11:53:09,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b00ab88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:53:09, skipping insertion in model container [2023-11-26 11:53:09,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:09" (3/3) ... [2023-11-26 11:53:09,416 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-26 11:53:09,425 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:53:09,437 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:53:09,437 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:53:09,438 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:53:09,479 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:53:09,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 39 transitions, 90 flow [2023-11-26 11:53:09,549 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2023-11-26 11:53:09,549 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:53:09,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-11-26 11:53:09,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 39 transitions, 90 flow [2023-11-26 11:53:09,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2023-11-26 11:53:09,567 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:53:09,575 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;@57b1a622, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:53:09,575 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-26 11:53:09,589 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:53:09,589 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2023-11-26 11:53:09,590 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:53:09,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:09,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:09,591 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 11:53:09,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:09,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1296380526, now seen corresponding path program 1 times [2023-11-26 11:53:09,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:09,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107677104] [2023-11-26 11:53:09,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:09,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:10,380 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 11:53:10,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:10,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107677104] [2023-11-26 11:53:10,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107677104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:10,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:10,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:53:10,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690576342] [2023-11-26 11:53:10,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:10,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:53:10,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:10,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:53:10,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:53:10,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2023-11-26 11:53:10,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 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 11:53:10,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:10,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2023-11-26 11:53:10,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:11,217 INFO L124 PetriNetUnfolderBase]: 1589/2964 cut-off events. [2023-11-26 11:53:11,217 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-26 11:53:11,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5447 conditions, 2964 events. 1589/2964 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 21128 event pairs, 465 based on Foata normal form. 99/3015 useless extension candidates. Maximal degree in co-relation 5436. Up to 965 conditions per place. [2023-11-26 11:53:11,247 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 30 selfloop transitions, 7 changer transitions 39/89 dead transitions. [2023-11-26 11:53:11,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 89 transitions, 345 flow [2023-11-26 11:53:11,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:53:11,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:53:11,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2023-11-26 11:53:11,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6959706959706959 [2023-11-26 11:53:11,264 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 190 transitions. [2023-11-26 11:53:11,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 190 transitions. [2023-11-26 11:53:11,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:11,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 190 transitions. [2023-11-26 11:53:11,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 27.142857142857142) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 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 11:53:11,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 0 states have call successors, (0), 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 11:53:11,278 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 0 states have call successors, (0), 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 11:53:11,280 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 7 states and 190 transitions. [2023-11-26 11:53:11,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 89 transitions, 345 flow [2023-11-26 11:53:11,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 89 transitions, 340 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:53:11,289 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 158 flow [2023-11-26 11:53:11,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=158, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-11-26 11:53:11,295 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2023-11-26 11:53:11,296 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 158 flow [2023-11-26 11:53:11,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 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 11:53:11,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:11,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:11,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:53:11,297 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 11:53:11,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:11,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1303634287, now seen corresponding path program 1 times [2023-11-26 11:53:11,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:11,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197238541] [2023-11-26 11:53:11,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:11,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:11,557 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 11:53:11,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:11,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197238541] [2023-11-26 11:53:11,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197238541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:11,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:11,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:53:11,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445837207] [2023-11-26 11:53:11,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:11,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:53:11,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:11,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:53:11,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:53:11,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2023-11-26 11:53:11,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 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 11:53:11,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:11,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2023-11-26 11:53:11,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:12,178 INFO L124 PetriNetUnfolderBase]: 1351/2599 cut-off events. [2023-11-26 11:53:12,178 INFO L125 PetriNetUnfolderBase]: For 3332/3340 co-relation queries the response was YES. [2023-11-26 11:53:12,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7595 conditions, 2599 events. 1351/2599 cut-off events. For 3332/3340 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 18368 event pairs, 206 based on Foata normal form. 82/2662 useless extension candidates. Maximal degree in co-relation 7579. Up to 774 conditions per place. [2023-11-26 11:53:12,211 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 37 selfloop transitions, 8 changer transitions 58/116 dead transitions. [2023-11-26 11:53:12,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 116 transitions, 772 flow [2023-11-26 11:53:12,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:53:12,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:53:12,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2023-11-26 11:53:12,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6487179487179487 [2023-11-26 11:53:12,215 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 253 transitions. [2023-11-26 11:53:12,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 253 transitions. [2023-11-26 11:53:12,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:12,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 253 transitions. [2023-11-26 11:53:12,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 25.3) internal successors, (253), 10 states have internal predecessors, (253), 0 states have call successors, (0), 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 11:53:12,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 0 states have call successors, (0), 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 11:53:12,220 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 0 states have call successors, (0), 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 11:53:12,220 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 158 flow. Second operand 10 states and 253 transitions. [2023-11-26 11:53:12,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 116 transitions, 772 flow [2023-11-26 11:53:12,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 116 transitions, 714 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:53:12,237 INFO L231 Difference]: Finished difference. Result has 64 places, 43 transitions, 230 flow [2023-11-26 11:53:12,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=230, PETRI_PLACES=64, PETRI_TRANSITIONS=43} [2023-11-26 11:53:12,276 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2023-11-26 11:53:12,276 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 43 transitions, 230 flow [2023-11-26 11:53:12,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 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 11:53:12,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:12,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:12,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:53:12,277 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 11:53:12,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:12,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1687819023, now seen corresponding path program 1 times [2023-11-26 11:53:12,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:12,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037057786] [2023-11-26 11:53:12,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:12,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:12,617 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 11:53:12,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:12,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037057786] [2023-11-26 11:53:12,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037057786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:12,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:12,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:53:12,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207779896] [2023-11-26 11:53:12,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:12,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:53:12,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:12,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:53:12,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:53:12,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2023-11-26 11:53:12,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 43 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 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 11:53:12,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:12,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2023-11-26 11:53:12,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:13,256 INFO L124 PetriNetUnfolderBase]: 1199/2334 cut-off events. [2023-11-26 11:53:13,256 INFO L125 PetriNetUnfolderBase]: For 6905/6909 co-relation queries the response was YES. [2023-11-26 11:53:13,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7905 conditions, 2334 events. 1199/2334 cut-off events. For 6905/6909 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 16382 event pairs, 115 based on Foata normal form. 75/2388 useless extension candidates. Maximal degree in co-relation 7880. Up to 662 conditions per place. [2023-11-26 11:53:13,285 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 43 selfloop transitions, 12 changer transitions 52/120 dead transitions. [2023-11-26 11:53:13,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 120 transitions, 916 flow [2023-11-26 11:53:13,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:53:13,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:53:13,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2023-11-26 11:53:13,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6435897435897436 [2023-11-26 11:53:13,288 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 251 transitions. [2023-11-26 11:53:13,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 251 transitions. [2023-11-26 11:53:13,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:13,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 251 transitions. [2023-11-26 11:53:13,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 25.1) internal successors, (251), 10 states have internal predecessors, (251), 0 states have call successors, (0), 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 11:53:13,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 0 states have call successors, (0), 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 11:53:13,293 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 0 states have call successors, (0), 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 11:53:13,293 INFO L175 Difference]: Start difference. First operand has 64 places, 43 transitions, 230 flow. Second operand 10 states and 251 transitions. [2023-11-26 11:53:13,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 120 transitions, 916 flow [2023-11-26 11:53:13,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 120 transitions, 869 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-11-26 11:53:13,322 INFO L231 Difference]: Finished difference. Result has 73 places, 49 transitions, 352 flow [2023-11-26 11:53:13,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=352, PETRI_PLACES=73, PETRI_TRANSITIONS=49} [2023-11-26 11:53:13,324 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2023-11-26 11:53:13,324 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 49 transitions, 352 flow [2023-11-26 11:53:13,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 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 11:53:13,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:13,325 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 11:53:13,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:53:13,325 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 11:53:13,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:13,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1626481644, now seen corresponding path program 1 times [2023-11-26 11:53:13,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:13,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501079638] [2023-11-26 11:53:13,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:13,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:13,520 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 11:53:13,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:13,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501079638] [2023-11-26 11:53:13,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501079638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:13,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:13,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:53:13,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043417795] [2023-11-26 11:53:13,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:13,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:53:13,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:13,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:53:13,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:53:13,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2023-11-26 11:53:13,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 49 transitions, 352 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 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 11:53:13,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:13,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2023-11-26 11:53:13,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:14,075 INFO L124 PetriNetUnfolderBase]: 1033/2014 cut-off events. [2023-11-26 11:53:14,076 INFO L125 PetriNetUnfolderBase]: For 7816/7816 co-relation queries the response was YES. [2023-11-26 11:53:14,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7552 conditions, 2014 events. 1033/2014 cut-off events. For 7816/7816 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 13794 event pairs, 171 based on Foata normal form. 60/2039 useless extension candidates. Maximal degree in co-relation 7519. Up to 576 conditions per place. [2023-11-26 11:53:14,105 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 44 selfloop transitions, 18 changer transitions 48/123 dead transitions. [2023-11-26 11:53:14,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 123 transitions, 1084 flow [2023-11-26 11:53:14,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:53:14,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:53:14,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2023-11-26 11:53:14,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6384615384615384 [2023-11-26 11:53:14,108 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 249 transitions. [2023-11-26 11:53:14,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 249 transitions. [2023-11-26 11:53:14,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:14,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 249 transitions. [2023-11-26 11:53:14,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 0 states have call successors, (0), 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 11:53:14,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 0 states have call successors, (0), 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 11:53:14,113 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 0 states have call successors, (0), 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 11:53:14,113 INFO L175 Difference]: Start difference. First operand has 73 places, 49 transitions, 352 flow. Second operand 10 states and 249 transitions. [2023-11-26 11:53:14,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 123 transitions, 1084 flow [2023-11-26 11:53:14,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 123 transitions, 1010 flow, removed 35 selfloop flow, removed 7 redundant places. [2023-11-26 11:53:14,147 INFO L231 Difference]: Finished difference. Result has 78 places, 54 transitions, 477 flow [2023-11-26 11:53:14,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=477, PETRI_PLACES=78, PETRI_TRANSITIONS=54} [2023-11-26 11:53:14,149 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2023-11-26 11:53:14,150 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 54 transitions, 477 flow [2023-11-26 11:53:14,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 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 11:53:14,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:14,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:14,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:53:14,151 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 11:53:14,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:14,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1855089005, now seen corresponding path program 1 times [2023-11-26 11:53:14,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:14,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228674656] [2023-11-26 11:53:14,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:14,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:14,357 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 11:53:14,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:14,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228674656] [2023-11-26 11:53:14,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228674656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:14,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:14,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:53:14,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906337336] [2023-11-26 11:53:14,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:14,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:53:14,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:14,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:53:14,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:53:14,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 39 [2023-11-26 11:53:14,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 54 transitions, 477 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 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 11:53:14,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:14,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 39 [2023-11-26 11:53:14,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:14,691 INFO L124 PetriNetUnfolderBase]: 638/1372 cut-off events. [2023-11-26 11:53:14,691 INFO L125 PetriNetUnfolderBase]: For 6751/6915 co-relation queries the response was YES. [2023-11-26 11:53:14,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5362 conditions, 1372 events. 638/1372 cut-off events. For 6751/6915 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9357 event pairs, 221 based on Foata normal form. 67/1352 useless extension candidates. Maximal degree in co-relation 5325. Up to 745 conditions per place. [2023-11-26 11:53:14,713 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 28 selfloop transitions, 9 changer transitions 21/88 dead transitions. [2023-11-26 11:53:14,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 875 flow [2023-11-26 11:53:14,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:53:14,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:53:14,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2023-11-26 11:53:14,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6813186813186813 [2023-11-26 11:53:14,716 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 186 transitions. [2023-11-26 11:53:14,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 186 transitions. [2023-11-26 11:53:14,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:14,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 186 transitions. [2023-11-26 11:53:14,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 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 11:53:14,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 0 states have call successors, (0), 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 11:53:14,719 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 0 states have call successors, (0), 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 11:53:14,720 INFO L175 Difference]: Start difference. First operand has 78 places, 54 transitions, 477 flow. Second operand 7 states and 186 transitions. [2023-11-26 11:53:14,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 875 flow [2023-11-26 11:53:14,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 88 transitions, 829 flow, removed 20 selfloop flow, removed 7 redundant places. [2023-11-26 11:53:14,747 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 586 flow [2023-11-26 11:53:14,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=586, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2023-11-26 11:53:14,750 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 33 predicate places. [2023-11-26 11:53:14,750 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 586 flow [2023-11-26 11:53:14,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 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 11:53:14,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:14,751 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 11:53:14,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:53:14,752 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 11:53:14,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:14,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1925980344, now seen corresponding path program 1 times [2023-11-26 11:53:14,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:14,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413137742] [2023-11-26 11:53:14,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:14,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:14,962 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 11:53:14,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:14,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413137742] [2023-11-26 11:53:14,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413137742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:14,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:14,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:53:14,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204775348] [2023-11-26 11:53:14,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:14,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:53:14,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:14,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:53:14,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:53:14,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 39 [2023-11-26 11:53:14,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 586 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 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 11:53:14,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:14,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 39 [2023-11-26 11:53:14,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:15,421 INFO L124 PetriNetUnfolderBase]: 904/1987 cut-off events. [2023-11-26 11:53:15,421 INFO L125 PetriNetUnfolderBase]: For 8194/8293 co-relation queries the response was YES. [2023-11-26 11:53:15,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7483 conditions, 1987 events. 904/1987 cut-off events. For 8194/8293 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15206 event pairs, 151 based on Foata normal form. 55/1963 useless extension candidates. Maximal degree in co-relation 7445. Up to 557 conditions per place. [2023-11-26 11:53:15,450 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 26 selfloop transitions, 6 changer transitions 20/82 dead transitions. [2023-11-26 11:53:15,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 82 transitions, 773 flow [2023-11-26 11:53:15,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:53:15,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:53:15,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2023-11-26 11:53:15,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2023-11-26 11:53:15,452 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 153 transitions. [2023-11-26 11:53:15,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 153 transitions. [2023-11-26 11:53:15,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:15,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 153 transitions. [2023-11-26 11:53:15,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 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 11:53:15,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:15,456 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:15,456 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 586 flow. Second operand 6 states and 153 transitions. [2023-11-26 11:53:15,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 82 transitions, 773 flow [2023-11-26 11:53:15,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 82 transitions, 738 flow, removed 13 selfloop flow, removed 7 redundant places. [2023-11-26 11:53:15,493 INFO L231 Difference]: Finished difference. Result has 73 places, 52 transitions, 463 flow [2023-11-26 11:53:15,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=463, PETRI_PLACES=73, PETRI_TRANSITIONS=52} [2023-11-26 11:53:15,496 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2023-11-26 11:53:15,497 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 52 transitions, 463 flow [2023-11-26 11:53:15,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 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 11:53:15,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:15,498 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 11:53:15,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:53:15,498 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 11:53:15,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:15,499 INFO L85 PathProgramCache]: Analyzing trace with hash -2020766190, now seen corresponding path program 2 times [2023-11-26 11:53:15,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:15,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648908250] [2023-11-26 11:53:15,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:15,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:15,689 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 11:53:15,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:15,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648908250] [2023-11-26 11:53:15,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648908250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:15,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:15,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:53:15,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802477658] [2023-11-26 11:53:15,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:15,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:53:15,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:15,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:53:15,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:53:15,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 39 [2023-11-26 11:53:15,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 52 transitions, 463 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 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 11:53:15,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:15,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 39 [2023-11-26 11:53:15,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:16,046 INFO L124 PetriNetUnfolderBase]: 605/1353 cut-off events. [2023-11-26 11:53:16,047 INFO L125 PetriNetUnfolderBase]: For 6404/6459 co-relation queries the response was YES. [2023-11-26 11:53:16,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4984 conditions, 1353 events. 605/1353 cut-off events. For 6404/6459 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9865 event pairs, 252 based on Foata normal form. 48/1330 useless extension candidates. Maximal degree in co-relation 4948. Up to 410 conditions per place. [2023-11-26 11:53:16,064 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 21 selfloop transitions, 4 changer transitions 26/76 dead transitions. [2023-11-26 11:53:16,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 646 flow [2023-11-26 11:53:16,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:53:16,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:53:16,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2023-11-26 11:53:16,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2023-11-26 11:53:16,066 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 175 transitions. [2023-11-26 11:53:16,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 175 transitions. [2023-11-26 11:53:16,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:16,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 175 transitions. [2023-11-26 11:53:16,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 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 11:53:16,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 0 states have call successors, (0), 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 11:53:16,068 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 0 states have call successors, (0), 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 11:53:16,068 INFO L175 Difference]: Start difference. First operand has 73 places, 52 transitions, 463 flow. Second operand 7 states and 175 transitions. [2023-11-26 11:53:16,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 646 flow [2023-11-26 11:53:16,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 76 transitions, 607 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-11-26 11:53:16,084 INFO L231 Difference]: Finished difference. Result has 75 places, 45 transitions, 349 flow [2023-11-26 11:53:16,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=349, PETRI_PLACES=75, PETRI_TRANSITIONS=45} [2023-11-26 11:53:16,085 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2023-11-26 11:53:16,086 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 45 transitions, 349 flow [2023-11-26 11:53:16,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 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 11:53:16,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:16,086 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] [2023-11-26 11:53:16,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:53:16,086 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 11:53:16,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:16,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1455351532, now seen corresponding path program 1 times [2023-11-26 11:53:16,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:16,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448383194] [2023-11-26 11:53:16,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:16,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:16,233 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 11:53:16,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:16,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448383194] [2023-11-26 11:53:16,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448383194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:16,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:16,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:53:16,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938888611] [2023-11-26 11:53:16,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:16,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:53:16,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:16,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:53:16,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:53:16,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2023-11-26 11:53:16,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 45 transitions, 349 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 11:53:16,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:16,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2023-11-26 11:53:16,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:16,457 INFO L124 PetriNetUnfolderBase]: 591/1222 cut-off events. [2023-11-26 11:53:16,457 INFO L125 PetriNetUnfolderBase]: For 2948/2987 co-relation queries the response was YES. [2023-11-26 11:53:16,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3358 conditions, 1222 events. 591/1222 cut-off events. For 2948/2987 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7826 event pairs, 130 based on Foata normal form. 60/1222 useless extension candidates. Maximal degree in co-relation 3323. Up to 471 conditions per place. [2023-11-26 11:53:16,483 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 26 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-11-26 11:53:16,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 60 transitions, 445 flow [2023-11-26 11:53:16,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:53:16,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:53:16,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2023-11-26 11:53:16,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-26 11:53:16,488 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 117 transitions. [2023-11-26 11:53:16,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 117 transitions. [2023-11-26 11:53:16,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:16,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 117 transitions. [2023-11-26 11:53:16,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 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 11:53:16,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 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 11:53:16,490 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 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 11:53:16,490 INFO L175 Difference]: Start difference. First operand has 75 places, 45 transitions, 349 flow. Second operand 4 states and 117 transitions. [2023-11-26 11:53:16,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 60 transitions, 445 flow [2023-11-26 11:53:16,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 60 transitions, 405 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-11-26 11:53:16,507 INFO L231 Difference]: Finished difference. Result has 69 places, 49 transitions, 347 flow [2023-11-26 11:53:16,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=347, PETRI_PLACES=69, PETRI_TRANSITIONS=49} [2023-11-26 11:53:16,509 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2023-11-26 11:53:16,509 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 49 transitions, 347 flow [2023-11-26 11:53:16,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 11:53:16,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:16,510 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 11:53:16,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:53:16,510 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 11:53:16,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:16,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1314495343, now seen corresponding path program 1 times [2023-11-26 11:53:16,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:16,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347587108] [2023-11-26 11:53:16,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:16,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:16,661 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 11:53:16,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:16,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347587108] [2023-11-26 11:53:16,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347587108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:16,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:16,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:53:16,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187744479] [2023-11-26 11:53:16,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:16,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:53:16,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:16,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:53:16,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:53:16,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2023-11-26 11:53:16,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 49 transitions, 347 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 11:53:16,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:16,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2023-11-26 11:53:16,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:16,897 INFO L124 PetriNetUnfolderBase]: 460/957 cut-off events. [2023-11-26 11:53:16,897 INFO L125 PetriNetUnfolderBase]: For 1160/1368 co-relation queries the response was YES. [2023-11-26 11:53:16,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2710 conditions, 957 events. 460/957 cut-off events. For 1160/1368 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5537 event pairs, 41 based on Foata normal form. 71/972 useless extension candidates. Maximal degree in co-relation 2677. Up to 404 conditions per place. [2023-11-26 11:53:16,908 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 29 selfloop transitions, 8 changer transitions 4/70 dead transitions. [2023-11-26 11:53:16,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 70 transitions, 492 flow [2023-11-26 11:53:16,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:53:16,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:53:16,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2023-11-26 11:53:16,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7589743589743589 [2023-11-26 11:53:16,910 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 148 transitions. [2023-11-26 11:53:16,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 148 transitions. [2023-11-26 11:53:16,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:16,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 148 transitions. [2023-11-26 11:53:16,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 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 11:53:16,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 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 11:53:16,913 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 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 11:53:16,913 INFO L175 Difference]: Start difference. First operand has 69 places, 49 transitions, 347 flow. Second operand 5 states and 148 transitions. [2023-11-26 11:53:16,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 70 transitions, 492 flow [2023-11-26 11:53:16,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 70 transitions, 477 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-26 11:53:16,922 INFO L231 Difference]: Finished difference. Result has 72 places, 52 transitions, 381 flow [2023-11-26 11:53:16,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=72, PETRI_TRANSITIONS=52} [2023-11-26 11:53:16,924 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2023-11-26 11:53:16,924 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 52 transitions, 381 flow [2023-11-26 11:53:16,924 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 11:53:16,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:16,925 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] [2023-11-26 11:53:16,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:53:16,925 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 11:53:16,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:16,926 INFO L85 PathProgramCache]: Analyzing trace with hash -679929847, now seen corresponding path program 1 times [2023-11-26 11:53:16,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:16,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991413090] [2023-11-26 11:53:16,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:16,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:17,113 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 11:53:17,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:17,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991413090] [2023-11-26 11:53:17,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991413090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:17,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:17,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:53:17,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224184302] [2023-11-26 11:53:17,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:17,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:53:17,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:17,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:53:17,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:53:17,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2023-11-26 11:53:17,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 52 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 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 11:53:17,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:17,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2023-11-26 11:53:17,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:17,339 INFO L124 PetriNetUnfolderBase]: 352/709 cut-off events. [2023-11-26 11:53:17,340 INFO L125 PetriNetUnfolderBase]: For 1380/1806 co-relation queries the response was YES. [2023-11-26 11:53:17,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2336 conditions, 709 events. 352/709 cut-off events. For 1380/1806 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3933 event pairs, 23 based on Foata normal form. 59/716 useless extension candidates. Maximal degree in co-relation 2303. Up to 356 conditions per place. [2023-11-26 11:53:17,347 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2023-11-26 11:53:17,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 67 transitions, 494 flow [2023-11-26 11:53:17,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:53:17,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:53:17,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2023-11-26 11:53:17,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2023-11-26 11:53:17,350 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 169 transitions. [2023-11-26 11:53:17,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 169 transitions. [2023-11-26 11:53:17,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:17,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 169 transitions. [2023-11-26 11:53:17,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 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 11:53:17,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:17,353 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:17,354 INFO L175 Difference]: Start difference. First operand has 72 places, 52 transitions, 381 flow. Second operand 6 states and 169 transitions. [2023-11-26 11:53:17,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 67 transitions, 494 flow [2023-11-26 11:53:17,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 67 transitions, 466 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-11-26 11:53:17,359 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2023-11-26 11:53:17,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2023-11-26 11:53:17,360 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2023-11-26 11:53:17,361 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2023-11-26 11:53:17,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 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 11:53:17,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-26 11:53:17,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-26 11:53:17,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-26 11:53:17,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-26 11:53:17,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:53:17,366 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:17,370 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 11:53:17,370 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:53:17,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:53:17 BasicIcfg [2023-11-26 11:53:17,376 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:53:17,377 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:53:17,377 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:53:17,378 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:53:17,378 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:09" (3/4) ... [2023-11-26 11:53:17,380 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 11:53:17,384 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-26 11:53:17,385 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-26 11:53:17,385 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-26 11:53:17,390 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2023-11-26 11:53:17,391 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-26 11:53:17,391 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 11:53:17,391 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-26 11:53:17,477 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4739d42b-f783-48f2-abdd-0169aa3abaa6/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:53:17,478 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4739d42b-f783-48f2-abdd-0169aa3abaa6/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 11:53:17,478 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:53:17,479 INFO L158 Benchmark]: Toolchain (without parser) took 9415.62ms. Allocated memory was 172.0MB in the beginning and 262.1MB in the end (delta: 90.2MB). Free memory was 126.3MB in the beginning and 125.1MB in the end (delta: 1.2MB). Peak memory consumption was 93.5MB. Max. memory is 16.1GB. [2023-11-26 11:53:17,480 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 125.8MB. Free memory was 69.9MB in the beginning and 69.8MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:53:17,480 INFO L158 Benchmark]: CACSL2BoogieTranslator took 538.86ms. Allocated memory is still 172.0MB. Free memory was 126.3MB in the beginning and 105.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-26 11:53:17,480 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.30ms. Allocated memory is still 172.0MB. Free memory was 105.4MB in the beginning and 103.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:53:17,481 INFO L158 Benchmark]: Boogie Preprocessor took 91.00ms. Allocated memory is still 172.0MB. Free memory was 103.3MB in the beginning and 101.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:53:17,481 INFO L158 Benchmark]: RCFGBuilder took 625.91ms. Allocated memory is still 172.0MB. Free memory was 100.5MB in the beginning and 79.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-26 11:53:17,482 INFO L158 Benchmark]: TraceAbstraction took 7968.04ms. Allocated memory was 172.0MB in the beginning and 262.1MB in the end (delta: 90.2MB). Free memory was 78.8MB in the beginning and 129.3MB in the end (delta: -50.5MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. [2023-11-26 11:53:17,482 INFO L158 Benchmark]: Witness Printer took 101.38ms. Allocated memory is still 262.1MB. Free memory was 129.3MB in the beginning and 125.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:53:17,484 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 125.8MB. Free memory was 69.9MB in the beginning and 69.8MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 538.86ms. Allocated memory is still 172.0MB. Free memory was 126.3MB in the beginning and 105.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.30ms. Allocated memory is still 172.0MB. Free memory was 105.4MB in the beginning and 103.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 91.00ms. Allocated memory is still 172.0MB. Free memory was 103.3MB in the beginning and 101.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 625.91ms. Allocated memory is still 172.0MB. Free memory was 100.5MB in the beginning and 79.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 7968.04ms. Allocated memory was 172.0MB in the beginning and 262.1MB in the end (delta: 90.2MB). Free memory was 78.8MB in the beginning and 129.3MB in the end (delta: -50.5MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. * Witness Printer took 101.38ms. Allocated memory is still 262.1MB. Free memory was 129.3MB in the beginning and 125.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 64 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.9s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 452 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 400 mSDsluCounter, 300 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 197 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 934 IncrementalHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 103 mSDtfsCounter, 934 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=586occurred in iteration=5, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 193 NumberOfCodeBlocks, 193 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 183 ConstructedInterpolants, 0 QuantifiedInterpolants, 745 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 11:53:17,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4739d42b-f783-48f2-abdd-0169aa3abaa6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE