./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe018_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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a043bdf7-55a2-4af2-b017-f481192561f5/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a043bdf7-55a2-4af2-b017-f481192561f5/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_a043bdf7-55a2-4af2-b017-f481192561f5/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a043bdf7-55a2-4af2-b017-f481192561f5/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a043bdf7-55a2-4af2-b017-f481192561f5/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_a043bdf7-55a2-4af2-b017-f481192561f5/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 e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:48:42,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:48:42,695 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a043bdf7-55a2-4af2-b017-f481192561f5/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:48:42,706 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:48:42,707 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:48:42,751 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:48:42,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:48:42,753 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:48:42,754 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:48:42,759 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:48:42,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:48:42,761 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:48:42,761 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:48:42,764 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:48:42,764 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:48:42,765 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:48:42,765 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:48:42,766 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:48:42,767 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:48:42,767 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:48:42,769 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:48:42,770 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:48:42,770 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:48:42,771 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:48:42,771 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:48:42,771 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:48:42,772 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:48:42,773 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:48:42,773 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:48:42,774 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:48:42,775 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:48:42,776 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:48:42,776 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:48:42,776 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:48:42,777 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:48:42,777 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:48:42,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:48:42,777 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:48:42,778 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:48:42,778 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:48:42,778 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:48:42,779 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:48:42,779 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_a043bdf7-55a2-4af2-b017-f481192561f5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a043bdf7-55a2-4af2-b017-f481192561f5/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad [2023-11-26 10:48:43,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:48:43,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:48:43,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:48:43,109 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:48:43,110 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:48:43,111 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a043bdf7-55a2-4af2-b017-f481192561f5/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-26 10:48:46,140 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:48:46,429 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:48:46,434 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a043bdf7-55a2-4af2-b017-f481192561f5/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-26 10:48:46,460 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a043bdf7-55a2-4af2-b017-f481192561f5/bin/uautomizer-verify-VRDe98Ueme/data/c61a7d2db/8fe1d08d8a354e5eb5b1802473513bfa/FLAG0d633cd4a [2023-11-26 10:48:46,479 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a043bdf7-55a2-4af2-b017-f481192561f5/bin/uautomizer-verify-VRDe98Ueme/data/c61a7d2db/8fe1d08d8a354e5eb5b1802473513bfa [2023-11-26 10:48:46,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:48:46,485 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:48:46,486 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:48:46,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:48:46,493 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:48:46,494 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:48:46" (1/1) ... [2023-11-26 10:48:46,495 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7211f230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:46, skipping insertion in model container [2023-11-26 10:48:46,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:48:46" (1/1) ... [2023-11-26 10:48:46,543 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:48:46,742 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_a043bdf7-55a2-4af2-b017-f481192561f5/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-26 10:48:46,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:48:46,981 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:48:47,000 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_a043bdf7-55a2-4af2-b017-f481192561f5/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-26 10:48:47,061 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:48:47,104 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:48:47,104 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:48:47,112 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:48:47,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:47 WrapperNode [2023-11-26 10:48:47,113 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:48:47,115 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:48:47,115 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:48:47,115 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:48:47,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:47" (1/1) ... [2023-11-26 10:48:47,139 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:47" (1/1) ... [2023-11-26 10:48:47,164 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-26 10:48:47,164 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:48:47,165 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:48:47,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:48:47,166 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:48:47,177 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:47" (1/1) ... [2023-11-26 10:48:47,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:47" (1/1) ... [2023-11-26 10:48:47,182 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:47" (1/1) ... [2023-11-26 10:48:47,198 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 10:48:47,199 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:47" (1/1) ... [2023-11-26 10:48:47,199 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:47" (1/1) ... [2023-11-26 10:48:47,207 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:47" (1/1) ... [2023-11-26 10:48:47,209 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:47" (1/1) ... [2023-11-26 10:48:47,212 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:47" (1/1) ... [2023-11-26 10:48:47,213 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:47" (1/1) ... [2023-11-26 10:48:47,217 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:48:47,218 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:48:47,219 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:48:47,219 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:48:47,220 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:47" (1/1) ... [2023-11-26 10:48:47,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:48:47,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a043bdf7-55a2-4af2-b017-f481192561f5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:47,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a043bdf7-55a2-4af2-b017-f481192561f5/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:48:47,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a043bdf7-55a2-4af2-b017-f481192561f5/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:48:47,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:48:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:48:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:48:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:48:47,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 10:48:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:48:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:48:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:48:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 10:48:47,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 10:48:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 10:48:47,323 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 10:48:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 10:48:47,323 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 10:48:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:48:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:48:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:48:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:48:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 10:48:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:48:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:48:47,328 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:48:47,512 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:48:47,515 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:48:47,724 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:48:47,913 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:48:47,914 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:48:47,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:48:47 BoogieIcfgContainer [2023-11-26 10:48:47,914 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:48:47,918 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:48:47,918 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:48:47,922 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:48:47,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:48:46" (1/3) ... [2023-11-26 10:48:47,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5919e519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:48:47, skipping insertion in model container [2023-11-26 10:48:47,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:47" (2/3) ... [2023-11-26 10:48:47,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5919e519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:48:47, skipping insertion in model container [2023-11-26 10:48:47,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:48:47" (3/3) ... [2023-11-26 10:48:47,926 INFO L112 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-26 10:48:47,936 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:48:47,946 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:48:47,946 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:48:47,946 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:48:47,989 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 10:48:48,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 37 transitions, 86 flow [2023-11-26 10:48:48,060 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2023-11-26 10:48:48,060 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:48:48,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2023-11-26 10:48:48,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 37 transitions, 86 flow [2023-11-26 10:48:48,069 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2023-11-26 10:48:48,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:48:48,089 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;@659ddf97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:48:48,089 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-26 10:48:48,104 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:48:48,104 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2023-11-26 10:48:48,105 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:48:48,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:48,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:48,106 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 10:48:48,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:48,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2064864355, now seen corresponding path program 1 times [2023-11-26 10:48:48,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:48,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985538466] [2023-11-26 10:48:48,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:48,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:48,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:48,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985538466] [2023-11-26 10:48:48,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985538466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:48,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:48,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:48:48,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932251110] [2023-11-26 10:48:48,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:48,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:48:48,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:48,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:48:48,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:48:48,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-26 10:48:49,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:49,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:49,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-26 10:48:49,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:49,421 INFO L124 PetriNetUnfolderBase]: 334/710 cut-off events. [2023-11-26 10:48:49,422 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-26 10:48:49,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1286 conditions, 710 events. 334/710 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4523 event pairs, 118 based on Foata normal form. 24/709 useless extension candidates. Maximal degree in co-relation 1275. Up to 411 conditions per place. [2023-11-26 10:48:49,433 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 23 selfloop transitions, 3 changer transitions 21/61 dead transitions. [2023-11-26 10:48:49,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 61 transitions, 231 flow [2023-11-26 10:48:49,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:48:49,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 10:48:49,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2023-11-26 10:48:49,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2023-11-26 10:48:49,448 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 168 transitions. [2023-11-26 10:48:49,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 168 transitions. [2023-11-26 10:48:49,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:49,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 168 transitions. [2023-11-26 10:48:49,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:49,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:49,460 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:49,462 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 7 states and 168 transitions. [2023-11-26 10:48:49,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 61 transitions, 231 flow [2023-11-26 10:48:49,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 61 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 10:48:49,479 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 103 flow [2023-11-26 10:48:49,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=103, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2023-11-26 10:48:49,485 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2023-11-26 10:48:49,485 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 103 flow [2023-11-26 10:48:49,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:49,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:49,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:49,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:48:49,487 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 10:48:49,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:49,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1395086268, now seen corresponding path program 1 times [2023-11-26 10:48:49,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:49,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869173536] [2023-11-26 10:48:49,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:49,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:49,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:49,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869173536] [2023-11-26 10:48:49,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869173536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:49,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:49,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:48:49,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751980128] [2023-11-26 10:48:49,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:49,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:48:49,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:49,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:48:49,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:48:49,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2023-11-26 10:48:49,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 103 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 10:48:49,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:49,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2023-11-26 10:48:49,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:50,229 INFO L124 PetriNetUnfolderBase]: 511/1025 cut-off events. [2023-11-26 10:48:50,229 INFO L125 PetriNetUnfolderBase]: For 702/702 co-relation queries the response was YES. [2023-11-26 10:48:50,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2374 conditions, 1025 events. 511/1025 cut-off events. For 702/702 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6912 event pairs, 63 based on Foata normal form. 30/1044 useless extension candidates. Maximal degree in co-relation 2359. Up to 321 conditions per place. [2023-11-26 10:48:50,245 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 40 selfloop transitions, 8 changer transitions 38/99 dead transitions. [2023-11-26 10:48:50,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 99 transitions, 493 flow [2023-11-26 10:48:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 10:48:50,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-26 10:48:50,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 297 transitions. [2023-11-26 10:48:50,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6174636174636174 [2023-11-26 10:48:50,253 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 297 transitions. [2023-11-26 10:48:50,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 297 transitions. [2023-11-26 10:48:50,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:50,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 297 transitions. [2023-11-26 10:48:50,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 22.846153846153847) internal successors, (297), 13 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:50,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 37.0) internal successors, (518), 14 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:50,263 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 37.0) internal successors, (518), 14 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:50,264 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 103 flow. Second operand 13 states and 297 transitions. [2023-11-26 10:48:50,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 99 transitions, 493 flow [2023-11-26 10:48:50,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 99 transitions, 466 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-26 10:48:50,272 INFO L231 Difference]: Finished difference. Result has 65 places, 38 transitions, 187 flow [2023-11-26 10:48:50,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=187, PETRI_PLACES=65, PETRI_TRANSITIONS=38} [2023-11-26 10:48:50,273 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2023-11-26 10:48:50,273 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 38 transitions, 187 flow [2023-11-26 10:48:50,274 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 10:48:50,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:50,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:50,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:48:50,274 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 10:48:50,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:50,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1412354468, now seen corresponding path program 1 times [2023-11-26 10:48:50,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:50,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741965500] [2023-11-26 10:48:50,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:50,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:50,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:50,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:50,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741965500] [2023-11-26 10:48:50,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741965500] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:50,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:50,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:48:50,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723460372] [2023-11-26 10:48:50,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:50,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:48:50,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:50,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:48:50,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:48:50,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-26 10:48:50,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 38 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:50,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:50,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-26 10:48:50,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:50,790 INFO L124 PetriNetUnfolderBase]: 325/691 cut-off events. [2023-11-26 10:48:50,791 INFO L125 PetriNetUnfolderBase]: For 2106/2108 co-relation queries the response was YES. [2023-11-26 10:48:50,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2252 conditions, 691 events. 325/691 cut-off events. For 2106/2108 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4352 event pairs, 78 based on Foata normal form. 26/694 useless extension candidates. Maximal degree in co-relation 2227. Up to 372 conditions per place. [2023-11-26 10:48:50,800 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 27 selfloop transitions, 4 changer transitions 23/69 dead transitions. [2023-11-26 10:48:50,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 69 transitions, 461 flow [2023-11-26 10:48:50,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:48:50,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 10:48:50,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2023-11-26 10:48:50,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6332046332046332 [2023-11-26 10:48:50,802 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 164 transitions. [2023-11-26 10:48:50,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 164 transitions. [2023-11-26 10:48:50,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:50,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 164 transitions. [2023-11-26 10:48:50,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:50,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:50,806 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:50,806 INFO L175 Difference]: Start difference. First operand has 65 places, 38 transitions, 187 flow. Second operand 7 states and 164 transitions. [2023-11-26 10:48:50,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 69 transitions, 461 flow [2023-11-26 10:48:50,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 69 transitions, 406 flow, removed 25 selfloop flow, removed 7 redundant places. [2023-11-26 10:48:50,820 INFO L231 Difference]: Finished difference. Result has 61 places, 38 transitions, 184 flow [2023-11-26 10:48:50,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=184, PETRI_PLACES=61, PETRI_TRANSITIONS=38} [2023-11-26 10:48:50,822 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2023-11-26 10:48:50,823 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 38 transitions, 184 flow [2023-11-26 10:48:50,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:50,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:50,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:50,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:48:50,824 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 10:48:50,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:50,825 INFO L85 PathProgramCache]: Analyzing trace with hash 2053341702, now seen corresponding path program 1 times [2023-11-26 10:48:50,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:50,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910276718] [2023-11-26 10:48:50,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:50,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:51,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:51,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:51,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910276718] [2023-11-26 10:48:51,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910276718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:51,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:51,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:48:51,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354255252] [2023-11-26 10:48:51,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:51,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:48:51,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:51,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:48:51,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:48:51,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2023-11-26 10:48:51,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 38 transitions, 184 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:51,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:51,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2023-11-26 10:48:51,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:51,353 INFO L124 PetriNetUnfolderBase]: 410/822 cut-off events. [2023-11-26 10:48:51,354 INFO L125 PetriNetUnfolderBase]: For 1788/1788 co-relation queries the response was YES. [2023-11-26 10:48:51,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 822 events. 410/822 cut-off events. For 1788/1788 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5313 event pairs, 144 based on Foata normal form. 22/827 useless extension candidates. Maximal degree in co-relation 2433. Up to 193 conditions per place. [2023-11-26 10:48:51,361 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 22 selfloop transitions, 3 changer transitions 33/71 dead transitions. [2023-11-26 10:48:51,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 71 transitions, 474 flow [2023-11-26 10:48:51,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:48:51,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 10:48:51,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2023-11-26 10:48:51,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6148648648648649 [2023-11-26 10:48:51,364 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 182 transitions. [2023-11-26 10:48:51,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 182 transitions. [2023-11-26 10:48:51,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:51,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 182 transitions. [2023-11-26 10:48:51,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:51,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 37.0) internal successors, (333), 9 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:51,367 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 37.0) internal successors, (333), 9 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:51,367 INFO L175 Difference]: Start difference. First operand has 61 places, 38 transitions, 184 flow. Second operand 8 states and 182 transitions. [2023-11-26 10:48:51,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 71 transitions, 474 flow [2023-11-26 10:48:51,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 430 flow, removed 18 selfloop flow, removed 7 redundant places. [2023-11-26 10:48:51,378 INFO L231 Difference]: Finished difference. Result has 63 places, 31 transitions, 130 flow [2023-11-26 10:48:51,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=130, PETRI_PLACES=63, PETRI_TRANSITIONS=31} [2023-11-26 10:48:51,380 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2023-11-26 10:48:51,381 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 31 transitions, 130 flow [2023-11-26 10:48:51,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:51,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:51,382 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 10:48:51,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:48:51,383 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 10:48:51,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:51,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1757665718, now seen corresponding path program 1 times [2023-11-26 10:48:51,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:51,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620770273] [2023-11-26 10:48:51,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:51,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:51,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:51,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:51,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620770273] [2023-11-26 10:48:51,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620770273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:51,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:51,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:48:51,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117773059] [2023-11-26 10:48:51,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:51,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:48:51,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:51,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:48:51,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:48:51,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2023-11-26 10:48:51,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 31 transitions, 130 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:51,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:51,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2023-11-26 10:48:51,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:51,890 INFO L124 PetriNetUnfolderBase]: 325/643 cut-off events. [2023-11-26 10:48:51,890 INFO L125 PetriNetUnfolderBase]: For 1326/1326 co-relation queries the response was YES. [2023-11-26 10:48:51,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1958 conditions, 643 events. 325/643 cut-off events. For 1326/1326 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3509 event pairs, 106 based on Foata normal form. 18/645 useless extension candidates. Maximal degree in co-relation 1932. Up to 219 conditions per place. [2023-11-26 10:48:51,897 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 22 selfloop transitions, 3 changer transitions 29/67 dead transitions. [2023-11-26 10:48:51,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 67 transitions, 422 flow [2023-11-26 10:48:51,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:48:51,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 10:48:51,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2023-11-26 10:48:51,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2023-11-26 10:48:51,899 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 184 transitions. [2023-11-26 10:48:51,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 184 transitions. [2023-11-26 10:48:51,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:51,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 184 transitions. [2023-11-26 10:48:51,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:51,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 37.0) internal successors, (333), 9 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:51,903 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 37.0) internal successors, (333), 9 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:51,903 INFO L175 Difference]: Start difference. First operand has 63 places, 31 transitions, 130 flow. Second operand 8 states and 184 transitions. [2023-11-26 10:48:51,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 67 transitions, 422 flow [2023-11-26 10:48:51,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 67 transitions, 323 flow, removed 36 selfloop flow, removed 15 redundant places. [2023-11-26 10:48:51,913 INFO L231 Difference]: Finished difference. Result has 56 places, 31 transitions, 110 flow [2023-11-26 10:48:51,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=110, PETRI_PLACES=56, PETRI_TRANSITIONS=31} [2023-11-26 10:48:51,917 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2023-11-26 10:48:51,917 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 31 transitions, 110 flow [2023-11-26 10:48:51,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:51,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:51,918 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 10:48:51,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:48:51,919 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 10:48:51,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:51,921 INFO L85 PathProgramCache]: Analyzing trace with hash 249785581, now seen corresponding path program 1 times [2023-11-26 10:48:51,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:51,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414916792] [2023-11-26 10:48:51,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:51,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:52,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:52,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:52,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414916792] [2023-11-26 10:48:52,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414916792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:52,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:52,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:48:52,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760528303] [2023-11-26 10:48:52,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:52,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:48:52,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:52,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:48:52,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:52,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2023-11-26 10:48:52,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 31 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:52,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:52,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2023-11-26 10:48:52,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:52,250 INFO L124 PetriNetUnfolderBase]: 309/632 cut-off events. [2023-11-26 10:48:52,250 INFO L125 PetriNetUnfolderBase]: For 586/586 co-relation queries the response was YES. [2023-11-26 10:48:52,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1539 conditions, 632 events. 309/632 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3529 event pairs, 78 based on Foata normal form. 27/631 useless extension candidates. Maximal degree in co-relation 1519. Up to 258 conditions per place. [2023-11-26 10:48:52,257 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 23 selfloop transitions, 5 changer transitions 1/44 dead transitions. [2023-11-26 10:48:52,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 44 transitions, 196 flow [2023-11-26 10:48:52,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:48:52,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:48:52,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2023-11-26 10:48:52,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.722972972972973 [2023-11-26 10:48:52,259 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 107 transitions. [2023-11-26 10:48:52,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 107 transitions. [2023-11-26 10:48:52,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:52,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 107 transitions. [2023-11-26 10:48:52,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:52,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:52,261 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:52,261 INFO L175 Difference]: Start difference. First operand has 56 places, 31 transitions, 110 flow. Second operand 4 states and 107 transitions. [2023-11-26 10:48:52,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 44 transitions, 196 flow [2023-11-26 10:48:52,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 176 flow, removed 6 selfloop flow, removed 8 redundant places. [2023-11-26 10:48:52,268 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 124 flow [2023-11-26 10:48:52,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2023-11-26 10:48:52,272 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2023-11-26 10:48:52,273 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 124 flow [2023-11-26 10:48:52,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:52,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:52,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:52,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:48:52,274 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 10:48:52,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:52,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2126570806, now seen corresponding path program 1 times [2023-11-26 10:48:52,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:52,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225316202] [2023-11-26 10:48:52,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:52,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:52,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:52,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:52,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225316202] [2023-11-26 10:48:52,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225316202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:52,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:52,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:48:52,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441023922] [2023-11-26 10:48:52,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:52,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:48:52,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:52,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:48:52,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:48:52,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2023-11-26 10:48:52,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:52,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:52,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2023-11-26 10:48:52,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:52,580 INFO L124 PetriNetUnfolderBase]: 245/505 cut-off events. [2023-11-26 10:48:52,580 INFO L125 PetriNetUnfolderBase]: For 262/338 co-relation queries the response was YES. [2023-11-26 10:48:52,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 505 events. 245/505 cut-off events. For 262/338 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2466 event pairs, 27 based on Foata normal form. 30/516 useless extension candidates. Maximal degree in co-relation 1254. Up to 181 conditions per place. [2023-11-26 10:48:52,585 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 27 selfloop transitions, 8 changer transitions 1/51 dead transitions. [2023-11-26 10:48:52,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 247 flow [2023-11-26 10:48:52,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:48:52,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:48:52,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2023-11-26 10:48:52,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7189189189189189 [2023-11-26 10:48:52,587 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 133 transitions. [2023-11-26 10:48:52,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 133 transitions. [2023-11-26 10:48:52,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:52,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 133 transitions. [2023-11-26 10:48:52,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:52,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:52,590 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:52,590 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 124 flow. Second operand 5 states and 133 transitions. [2023-11-26 10:48:52,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 247 flow [2023-11-26 10:48:52,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 237 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-26 10:48:52,593 INFO L231 Difference]: Finished difference. Result has 53 places, 37 transitions, 164 flow [2023-11-26 10:48:52,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2023-11-26 10:48:52,594 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 12 predicate places. [2023-11-26 10:48:52,594 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 164 flow [2023-11-26 10:48:52,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:52,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:52,595 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] [2023-11-26 10:48:52,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:48:52,595 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 10:48:52,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:52,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1555551407, now seen corresponding path program 1 times [2023-11-26 10:48:52,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:52,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922914766] [2023-11-26 10:48:52,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:52,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:52,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:52,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:52,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922914766] [2023-11-26 10:48:52,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922914766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:52,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:52,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:48:52,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232278286] [2023-11-26 10:48:52,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:52,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:48:52,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:52,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:48:52,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:48:52,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2023-11-26 10:48:52,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:52,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:52,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2023-11-26 10:48:52,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:52,858 INFO L124 PetriNetUnfolderBase]: 150/300 cut-off events. [2023-11-26 10:48:52,858 INFO L125 PetriNetUnfolderBase]: For 369/485 co-relation queries the response was YES. [2023-11-26 10:48:52,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 300 events. 150/300 cut-off events. For 369/485 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1054 event pairs, 6 based on Foata normal form. 28/315 useless extension candidates. Maximal degree in co-relation 832. Up to 84 conditions per place. [2023-11-26 10:48:52,861 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 25 selfloop transitions, 11 changer transitions 1/52 dead transitions. [2023-11-26 10:48:52,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 274 flow [2023-11-26 10:48:52,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:48:52,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:48:52,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2023-11-26 10:48:52,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6891891891891891 [2023-11-26 10:48:52,863 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 153 transitions. [2023-11-26 10:48:52,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 153 transitions. [2023-11-26 10:48:52,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:52,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 153 transitions. [2023-11-26 10:48:52,865 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 10:48:52,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:52,866 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:52,866 INFO L175 Difference]: Start difference. First operand has 53 places, 37 transitions, 164 flow. Second operand 6 states and 153 transitions. [2023-11-26 10:48:52,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 274 flow [2023-11-26 10:48:52,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 231 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-11-26 10:48:52,870 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 160 flow [2023-11-26 10:48:52,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-11-26 10:48:52,871 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2023-11-26 10:48:52,871 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 160 flow [2023-11-26 10:48:52,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:52,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:52,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:52,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:48:52,872 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 10:48:52,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:52,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1628705144, now seen corresponding path program 1 times [2023-11-26 10:48:52,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:52,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7015458] [2023-11-26 10:48:52,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:52,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:53,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:53,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:53,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7015458] [2023-11-26 10:48:53,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7015458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:53,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:53,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:48:53,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321621387] [2023-11-26 10:48:53,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:53,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:48:53,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:53,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:48:53,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:48:53,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2023-11-26 10:48:53,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 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 10:48:53,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:53,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2023-11-26 10:48:53,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:53,207 INFO L124 PetriNetUnfolderBase]: 116/262 cut-off events. [2023-11-26 10:48:53,207 INFO L125 PetriNetUnfolderBase]: For 190/194 co-relation queries the response was YES. [2023-11-26 10:48:53,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 262 events. 116/262 cut-off events. For 190/194 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 984 event pairs, 26 based on Foata normal form. 8/251 useless extension candidates. Maximal degree in co-relation 637. Up to 98 conditions per place. [2023-11-26 10:48:53,209 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 0 selfloop transitions, 0 changer transitions 47/47 dead transitions. [2023-11-26 10:48:53,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 240 flow [2023-11-26 10:48:53,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:48:53,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 10:48:53,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2023-11-26 10:48:53,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5482625482625483 [2023-11-26 10:48:53,211 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 142 transitions. [2023-11-26 10:48:53,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 142 transitions. [2023-11-26 10:48:53,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:53,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 142 transitions. [2023-11-26 10:48:53,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:53,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:53,214 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:53,214 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 160 flow. Second operand 7 states and 142 transitions. [2023-11-26 10:48:53,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 240 flow [2023-11-26 10:48:53,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 184 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-11-26 10:48:53,216 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-11-26 10:48:53,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2023-11-26 10:48:53,218 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2023-11-26 10:48:53,218 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-11-26 10:48:53,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 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 10:48:53,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-26 10:48:53,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-26 10:48:53,222 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-26 10:48:53,222 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-26 10:48:53,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:48:53,223 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:53,226 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 10:48:53,227 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:48:53,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:48:53 BasicIcfg [2023-11-26 10:48:53,233 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:48:53,234 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:48:53,234 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:48:53,234 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:48:53,235 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:48:47" (3/4) ... [2023-11-26 10:48:53,237 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 10:48:53,241 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-26 10:48:53,241 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-26 10:48:53,241 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-26 10:48:53,246 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2023-11-26 10:48:53,247 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-26 10:48:53,247 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-26 10:48:53,247 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-26 10:48:53,335 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a043bdf7-55a2-4af2-b017-f481192561f5/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 10:48:53,336 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a043bdf7-55a2-4af2-b017-f481192561f5/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 10:48:53,336 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:48:53,337 INFO L158 Benchmark]: Toolchain (without parser) took 6852.39ms. Allocated memory was 146.8MB in the beginning and 234.9MB in the end (delta: 88.1MB). Free memory was 99.5MB in the beginning and 78.6MB in the end (delta: 20.9MB). Peak memory consumption was 109.7MB. Max. memory is 16.1GB. [2023-11-26 10:48:53,337 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 146.8MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:48:53,338 INFO L158 Benchmark]: CACSL2BoogieTranslator took 627.81ms. Allocated memory is still 146.8MB. Free memory was 99.2MB in the beginning and 78.6MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-26 10:48:53,338 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.02ms. Allocated memory is still 146.8MB. Free memory was 78.6MB in the beginning and 76.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:48:53,339 INFO L158 Benchmark]: Boogie Preprocessor took 52.28ms. Allocated memory is still 146.8MB. Free memory was 76.5MB in the beginning and 74.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:48:53,339 INFO L158 Benchmark]: RCFGBuilder took 696.32ms. Allocated memory was 146.8MB in the beginning and 195.0MB in the end (delta: 48.2MB). Free memory was 74.1MB in the beginning and 147.2MB in the end (delta: -73.1MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2023-11-26 10:48:53,340 INFO L158 Benchmark]: TraceAbstraction took 5315.31ms. Allocated memory was 195.0MB in the beginning and 234.9MB in the end (delta: 39.8MB). Free memory was 146.4MB in the beginning and 82.8MB in the end (delta: 63.6MB). Peak memory consumption was 102.1MB. Max. memory is 16.1GB. [2023-11-26 10:48:53,340 INFO L158 Benchmark]: Witness Printer took 102.68ms. Allocated memory is still 234.9MB. Free memory was 82.8MB in the beginning and 78.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:48:53,342 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 146.8MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 627.81ms. Allocated memory is still 146.8MB. Free memory was 99.2MB in the beginning and 78.6MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.02ms. Allocated memory is still 146.8MB. Free memory was 78.6MB in the beginning and 76.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.28ms. Allocated memory is still 146.8MB. Free memory was 76.5MB in the beginning and 74.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 696.32ms. Allocated memory was 146.8MB in the beginning and 195.0MB in the end (delta: 48.2MB). Free memory was 74.1MB in the beginning and 147.2MB in the end (delta: -73.1MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5315.31ms. Allocated memory was 195.0MB in the beginning and 234.9MB in the end (delta: 39.8MB). Free memory was 146.4MB in the beginning and 82.8MB in the end (delta: 63.6MB). Peak memory consumption was 102.1MB. Max. memory is 16.1GB. * Witness Printer took 102.68ms. Allocated memory is still 234.9MB. Free memory was 82.8MB in the beginning and 78.6MB 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, 60 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: 5.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 384 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 368 mSDsluCounter, 177 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 132 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 719 IncrementalHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 45 mSDtfsCounter, 719 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=187occurred in iteration=2, InterpolantAutomatonStates: 65, 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, 1.9s InterpolantComputationTime, 179 NumberOfCodeBlocks, 179 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 816 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 10:48:53,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a043bdf7-55a2-4af2-b017-f481192561f5/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