./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX --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 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:09:42,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:09:42,597 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:09:42,603 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:09:42,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:09:42,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:09:42,645 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:09:42,646 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:09:42,647 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:09:42,648 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:09:42,649 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:09:42,649 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:09:42,650 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:09:42,651 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:09:42,651 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:09:42,653 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:09:42,654 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:09:42,654 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:09:42,655 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:09:42,655 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:09:42,659 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:09:42,660 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:09:42,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:09:42,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:09:42,661 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:09:42,661 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:09:42,661 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:09:42,661 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:09:42,662 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:09:42,662 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:09:42,662 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:09:42,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:09:42,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:09:42,666 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:09:42,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:09:42,668 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:09:42,668 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:09:42,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:09:42,669 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:09:42,670 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:09:42,670 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:09:42,671 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:09:42,671 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_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a [2024-11-08 17:09:43,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:09:43,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:09:43,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:09:43,058 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:09:43,059 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:09:43,060 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c Unable to find full path for "g++" [2024-11-08 17:09:45,179 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:09:45,405 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:09:45,406 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2024-11-08 17:09:45,418 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/data/c8c5063ee/aeb1fcfbc9d7485bb3869c4f9c7a9978/FLAG1ae1b7e4b [2024-11-08 17:09:45,760 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/data/c8c5063ee/aeb1fcfbc9d7485bb3869c4f9c7a9978 [2024-11-08 17:09:45,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:09:45,765 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:09:45,766 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:09:45,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:09:45,773 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:09:45,774 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:09:45" (1/1) ... [2024-11-08 17:09:45,775 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@325614f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:45, skipping insertion in model container [2024-11-08 17:09:45,775 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:09:45" (1/1) ... [2024-11-08 17:09:45,800 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:09:46,026 WARN L250 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_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c[2625,2638] [2024-11-08 17:09:46,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:09:46,053 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:09:46,079 WARN L250 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_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c[2625,2638] [2024-11-08 17:09:46,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:09:46,100 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:09:46,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:46 WrapperNode [2024-11-08 17:09:46,101 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:09:46,102 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:09:46,103 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:09:46,103 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:09:46,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:46" (1/1) ... [2024-11-08 17:09:46,122 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:46" (1/1) ... [2024-11-08 17:09:46,145 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 86 [2024-11-08 17:09:46,145 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:09:46,146 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:09:46,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:09:46,147 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:09:46,155 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:46" (1/1) ... [2024-11-08 17:09:46,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:46" (1/1) ... [2024-11-08 17:09:46,158 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:46" (1/1) ... [2024-11-08 17:09:46,182 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-08 17:09:46,185 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:46" (1/1) ... [2024-11-08 17:09:46,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:46" (1/1) ... [2024-11-08 17:09:46,195 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:46" (1/1) ... [2024-11-08 17:09:46,199 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:46" (1/1) ... [2024-11-08 17:09:46,201 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:46" (1/1) ... [2024-11-08 17:09:46,202 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:46" (1/1) ... [2024-11-08 17:09:46,205 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:09:46,206 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:09:46,207 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:09:46,207 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:09:46,208 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:46" (1/1) ... [2024-11-08 17:09:46,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:09:46,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:09:46,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:09:46,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:09:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:09:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:09:46,293 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:09:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:09:46,294 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:09:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 17:09:46,294 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 17:09:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:09:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:09:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:09:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:09:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 17:09:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 17:09:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:09:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:09:46,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:09:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:09:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:09:46,301 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:09:46,455 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:09:46,459 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:09:46,826 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:09:46,826 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:09:47,092 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:09:47,094 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:09:47,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:09:47 BoogieIcfgContainer [2024-11-08 17:09:47,095 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:09:47,097 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:09:47,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:09:47,106 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:09:47,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:09:45" (1/3) ... [2024-11-08 17:09:47,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d8aeea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:09:47, skipping insertion in model container [2024-11-08 17:09:47,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:46" (2/3) ... [2024-11-08 17:09:47,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d8aeea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:09:47, skipping insertion in model container [2024-11-08 17:09:47,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:09:47" (3/3) ... [2024-11-08 17:09:47,111 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array-hom.wvr.c [2024-11-08 17:09:47,132 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:09:47,132 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:09:47,132 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:09:47,194 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 17:09:47,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 45 transitions, 111 flow [2024-11-08 17:09:47,288 INFO L124 PetriNetUnfolderBase]: 8/42 cut-off events. [2024-11-08 17:09:47,289 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:09:47,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 42 events. 8/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 65 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-08 17:09:47,294 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 45 transitions, 111 flow [2024-11-08 17:09:47,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 41 transitions, 100 flow [2024-11-08 17:09:47,314 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:09:47,323 INFO L333 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, 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;@15690a50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:09:47,323 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-08 17:09:47,338 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:09:47,339 INFO L124 PetriNetUnfolderBase]: 8/40 cut-off events. [2024-11-08 17:09:47,339 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:09:47,339 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:47,340 INFO L204 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] [2024-11-08 17:09:47,340 INFO L396 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)] === [2024-11-08 17:09:47,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:47,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1203860265, now seen corresponding path program 1 times [2024-11-08 17:09:47,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:47,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261800311] [2024-11-08 17:09:47,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:47,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:47,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:47,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:47,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261800311] [2024-11-08 17:09:47,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261800311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:09:47,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:09:47,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:09:47,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155101104] [2024-11-08 17:09:47,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:47,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:09:47,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:47,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:09:47,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:09:47,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-11-08 17:09:47,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-11-08 17:09:47,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:47,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-11-08 17:09:47,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:09:48,304 INFO L124 PetriNetUnfolderBase]: 680/1146 cut-off events. [2024-11-08 17:09:48,305 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-11-08 17:09:48,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2141 conditions, 1146 events. 680/1146 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5651 event pairs, 126 based on Foata normal form. 1/1003 useless extension candidates. Maximal degree in co-relation 1904. Up to 677 conditions per place. [2024-11-08 17:09:48,320 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 37 selfloop transitions, 4 changer transitions 1/58 dead transitions. [2024-11-08 17:09:48,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 233 flow [2024-11-08 17:09:48,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:09:48,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:09:48,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-11-08 17:09:48,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7407407407407407 [2024-11-08 17:09:48,337 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 100 flow. Second operand 3 states and 100 transitions. [2024-11-08 17:09:48,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 233 flow [2024-11-08 17:09:48,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 58 transitions, 211 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-08 17:09:48,347 INFO L231 Difference]: Finished difference. Result has 40 places, 44 transitions, 114 flow [2024-11-08 17:09:48,349 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=40, PETRI_TRANSITIONS=44} [2024-11-08 17:09:48,355 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-11-08 17:09:48,358 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 44 transitions, 114 flow [2024-11-08 17:09:48,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-11-08 17:09:48,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:48,359 INFO L204 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] [2024-11-08 17:09:48,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:09:48,359 INFO L396 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)] === [2024-11-08 17:09:48,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:48,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1161757627, now seen corresponding path program 1 times [2024-11-08 17:09:48,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:48,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747022857] [2024-11-08 17:09:48,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:48,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:48,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:09:48,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:48,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747022857] [2024-11-08 17:09:48,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747022857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:09:48,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:09:48,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:09:48,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389462425] [2024-11-08 17:09:48,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:48,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:09:48,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:48,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:09:48,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:09:48,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-11-08 17:09:48,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 44 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2024-11-08 17:09:48,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:48,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-11-08 17:09:48,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:09:48,969 INFO L124 PetriNetUnfolderBase]: 697/1214 cut-off events. [2024-11-08 17:09:48,969 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2024-11-08 17:09:48,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2423 conditions, 1214 events. 697/1214 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6526 event pairs, 407 based on Foata normal form. 1/1016 useless extension candidates. Maximal degree in co-relation 911. Up to 897 conditions per place. [2024-11-08 17:09:48,981 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 29 selfloop transitions, 2 changer transitions 2/47 dead transitions. [2024-11-08 17:09:48,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 186 flow [2024-11-08 17:09:48,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:09:48,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:09:48,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-11-08 17:09:48,984 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-08 17:09:48,984 INFO L175 Difference]: Start difference. First operand has 40 places, 44 transitions, 114 flow. Second operand 4 states and 99 transitions. [2024-11-08 17:09:48,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 186 flow [2024-11-08 17:09:48,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:09:48,990 INFO L231 Difference]: Finished difference. Result has 44 places, 45 transitions, 126 flow [2024-11-08 17:09:48,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=44, PETRI_TRANSITIONS=45} [2024-11-08 17:09:48,991 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-11-08 17:09:48,991 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 45 transitions, 126 flow [2024-11-08 17:09:48,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2024-11-08 17:09:48,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:48,992 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:09:48,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:09:48,992 INFO L396 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)] === [2024-11-08 17:09:48,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:48,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1690756034, now seen corresponding path program 1 times [2024-11-08 17:09:48,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:48,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623196770] [2024-11-08 17:09:48,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:48,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:49,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:09:49,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:49,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623196770] [2024-11-08 17:09:49,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623196770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:09:49,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:09:49,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:09:49,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329370737] [2024-11-08 17:09:49,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:49,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:09:49,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:49,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:09:49,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:09:49,178 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-11-08 17:09:49,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 45 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2024-11-08 17:09:49,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:49,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-11-08 17:09:49,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:09:49,488 INFO L124 PetriNetUnfolderBase]: 1049/1582 cut-off events. [2024-11-08 17:09:49,489 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2024-11-08 17:09:49,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3372 conditions, 1582 events. 1049/1582 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7673 event pairs, 303 based on Foata normal form. 0/1470 useless extension candidates. Maximal degree in co-relation 3357. Up to 776 conditions per place. [2024-11-08 17:09:49,502 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 42 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2024-11-08 17:09:49,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 254 flow [2024-11-08 17:09:49,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:09:49,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:09:49,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-08 17:09:49,506 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-11-08 17:09:49,506 INFO L175 Difference]: Start difference. First operand has 44 places, 45 transitions, 126 flow. Second operand 4 states and 102 transitions. [2024-11-08 17:09:49,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 254 flow [2024-11-08 17:09:49,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 248 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-08 17:09:49,510 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 139 flow [2024-11-08 17:09:49,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2024-11-08 17:09:49,511 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-11-08 17:09:49,511 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 139 flow [2024-11-08 17:09:49,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2024-11-08 17:09:49,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:49,512 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:09:49,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:09:49,514 INFO L396 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)] === [2024-11-08 17:09:49,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:49,515 INFO L85 PathProgramCache]: Analyzing trace with hash 572330266, now seen corresponding path program 1 times [2024-11-08 17:09:49,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:49,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051266111] [2024-11-08 17:09:49,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:49,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:49,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:09:49,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:49,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051266111] [2024-11-08 17:09:49,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051266111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:09:49,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489953933] [2024-11-08 17:09:49,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:49,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:09:49,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:09:49,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:09:49,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:09:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:49,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:09:49,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:09:49,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:09:49,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:09:49,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:09:49,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489953933] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 17:09:49,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:09:49,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-11-08 17:09:49,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99916369] [2024-11-08 17:09:49,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:49,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:09:49,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:49,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:09:49,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:09:50,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-11-08 17:09:50,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-11-08 17:09:50,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:50,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-11-08 17:09:50,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:09:50,338 INFO L124 PetriNetUnfolderBase]: 1140/1800 cut-off events. [2024-11-08 17:09:50,339 INFO L125 PetriNetUnfolderBase]: For 680/680 co-relation queries the response was YES. [2024-11-08 17:09:50,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4273 conditions, 1800 events. 1140/1800 cut-off events. For 680/680 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9131 event pairs, 308 based on Foata normal form. 0/1676 useless extension candidates. Maximal degree in co-relation 4246. Up to 896 conditions per place. [2024-11-08 17:09:50,352 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 47 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-11-08 17:09:50,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 61 transitions, 293 flow [2024-11-08 17:09:50,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:09:50,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:09:50,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-11-08 17:09:50,356 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-08 17:09:50,357 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 139 flow. Second operand 5 states and 108 transitions. [2024-11-08 17:09:50,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 61 transitions, 293 flow [2024-11-08 17:09:50,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 287 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:09:50,362 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 162 flow [2024-11-08 17:09:50,362 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-11-08 17:09:50,364 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2024-11-08 17:09:50,365 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 162 flow [2024-11-08 17:09:50,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-11-08 17:09:50,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:50,365 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:09:50,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 17:09:50,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:09:50,567 INFO L396 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)] === [2024-11-08 17:09:50,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:50,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1805723140, now seen corresponding path program 1 times [2024-11-08 17:09:50,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:50,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386805005] [2024-11-08 17:09:50,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:50,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:51,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:51,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386805005] [2024-11-08 17:09:51,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386805005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:09:51,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220770963] [2024-11-08 17:09:51,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:51,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:09:51,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:09:51,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:09:51,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:09:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:51,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 17:09:51,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:09:52,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 17:09:52,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 35 [2024-11-08 17:09:52,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:52,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:09:57,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 208 [2024-11-08 17:09:57,432 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:09:57,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 261 treesize of output 291 [2024-11-08 17:10:26,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 254 [2024-11-08 17:10:26,329 INFO L349 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2024-11-08 17:10:26,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 372 treesize of output 1 [2024-11-08 17:10:26,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:26,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220770963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:10:26,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:10:26,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 26 [2024-11-08 17:10:26,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442012756] [2024-11-08 17:10:26,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:10:26,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 17:10:26,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:10:26,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 17:10:26,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2024-11-08 17:10:27,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-11-08 17:10:27,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 162 flow. Second operand has 27 states, 27 states have (on average 12.88888888888889) internal successors, (348), 27 states have internal predecessors, (348), 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) [2024-11-08 17:10:27,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:10:27,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-11-08 17:10:27,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:10:33,351 INFO L124 PetriNetUnfolderBase]: 3762/5748 cut-off events. [2024-11-08 17:10:33,351 INFO L125 PetriNetUnfolderBase]: For 2897/2941 co-relation queries the response was YES. [2024-11-08 17:10:33,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14726 conditions, 5748 events. 3762/5748 cut-off events. For 2897/2941 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 31791 event pairs, 171 based on Foata normal form. 10/5690 useless extension candidates. Maximal degree in co-relation 8946. Up to 2284 conditions per place. [2024-11-08 17:10:33,407 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 206 selfloop transitions, 86 changer transitions 2/302 dead transitions. [2024-11-08 17:10:33,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 302 transitions, 1572 flow [2024-11-08 17:10:33,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 17:10:33,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-08 17:10:33,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 583 transitions. [2024-11-08 17:10:33,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4467432950191571 [2024-11-08 17:10:33,415 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 162 flow. Second operand 29 states and 583 transitions. [2024-11-08 17:10:33,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 302 transitions, 1572 flow [2024-11-08 17:10:33,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 302 transitions, 1553 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:10:33,434 INFO L231 Difference]: Finished difference. Result has 81 places, 132 transitions, 766 flow [2024-11-08 17:10:33,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=766, PETRI_PLACES=81, PETRI_TRANSITIONS=132} [2024-11-08 17:10:33,437 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2024-11-08 17:10:33,438 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 132 transitions, 766 flow [2024-11-08 17:10:33,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 12.88888888888889) internal successors, (348), 27 states have internal predecessors, (348), 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) [2024-11-08 17:10:33,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:10:33,439 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:10:33,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:10:33,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:10:33,642 INFO L396 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)] === [2024-11-08 17:10:33,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:10:33,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1574550114, now seen corresponding path program 2 times [2024-11-08 17:10:33,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:10:33,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320707320] [2024-11-08 17:10:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:33,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:10:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:34,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:10:34,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320707320] [2024-11-08 17:10:34,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320707320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:10:34,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155188164] [2024-11-08 17:10:34,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:10:34,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:10:34,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:10:34,534 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:10:34,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:10:34,640 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:10:34,640 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:10:34,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 17:10:34,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:10:34,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 17:10:35,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 35 [2024-11-08 17:10:35,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:35,192 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:10:38,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 254 [2024-11-08 17:10:38,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:10:38,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 372 treesize of output 376 [2024-11-08 17:11:08,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 208 [2024-11-08 17:11:08,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:11:08,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 261 treesize of output 291 [2024-11-08 17:11:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:11:13,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155188164] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:11:13,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:11:13,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2024-11-08 17:11:13,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508529510] [2024-11-08 17:11:13,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:11:13,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 17:11:13,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:11:13,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 17:11:13,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2024-11-08 17:11:14,491 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-11-08 17:11:14,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 132 transitions, 766 flow. Second operand has 22 states, 22 states have (on average 15.045454545454545) internal successors, (331), 22 states have internal predecessors, (331), 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) [2024-11-08 17:11:14,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:11:14,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-11-08 17:11:14,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:11:18,433 INFO L124 PetriNetUnfolderBase]: 3113/5253 cut-off events. [2024-11-08 17:11:18,433 INFO L125 PetriNetUnfolderBase]: For 4796/4894 co-relation queries the response was YES. [2024-11-08 17:11:18,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14971 conditions, 5253 events. 3113/5253 cut-off events. For 4796/4894 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 33225 event pairs, 241 based on Foata normal form. 35/5229 useless extension candidates. Maximal degree in co-relation 13835. Up to 2964 conditions per place. [2024-11-08 17:11:18,486 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 215 selfloop transitions, 95 changer transitions 2/323 dead transitions. [2024-11-08 17:11:18,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 323 transitions, 2041 flow [2024-11-08 17:11:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 17:11:18,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-08 17:11:18,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 592 transitions. [2024-11-08 17:11:18,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46984126984126984 [2024-11-08 17:11:18,489 INFO L175 Difference]: Start difference. First operand has 81 places, 132 transitions, 766 flow. Second operand 28 states and 592 transitions. [2024-11-08 17:11:18,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 323 transitions, 2041 flow [2024-11-08 17:11:18,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 323 transitions, 1901 flow, removed 69 selfloop flow, removed 1 redundant places. [2024-11-08 17:11:18,512 INFO L231 Difference]: Finished difference. Result has 111 places, 180 transitions, 1169 flow [2024-11-08 17:11:18,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1169, PETRI_PLACES=111, PETRI_TRANSITIONS=180} [2024-11-08 17:11:18,513 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 68 predicate places. [2024-11-08 17:11:18,514 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 180 transitions, 1169 flow [2024-11-08 17:11:18,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 15.045454545454545) internal successors, (331), 22 states have internal predecessors, (331), 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) [2024-11-08 17:11:18,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:11:18,514 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:18,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 17:11:18,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-08 17:11:18,715 INFO L396 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)] === [2024-11-08 17:11:18,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:18,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1484778786, now seen corresponding path program 3 times [2024-11-08 17:11:18,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:18,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340903647] [2024-11-08 17:11:18,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:18,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:19,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:11:19,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:19,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340903647] [2024-11-08 17:11:19,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340903647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:11:19,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923077717] [2024-11-08 17:11:19,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:11:19,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:11:19,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:11:19,568 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:11:19,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:11:19,650 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 17:11:19,650 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:11:19,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 17:11:19,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:11:19,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 17:11:20,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 35 [2024-11-08 17:11:20,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:11:20,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:11:23,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 195 [2024-11-08 17:11:23,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:11:23,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 296 treesize of output 278 [2024-11-08 17:11:29,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 167 [2024-11-08 17:11:29,904 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:11:29,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 215 treesize of output 219 [2024-11-08 17:11:31,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 96 [2024-11-08 17:11:31,507 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:11:31,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 115 [2024-11-08 17:11:31,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:11:31,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923077717] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:11:31,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:11:31,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 23 [2024-11-08 17:11:31,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109311335] [2024-11-08 17:11:31,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:11:31,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 17:11:31,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:11:31,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 17:11:31,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-11-08 17:11:32,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-11-08 17:11:32,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 180 transitions, 1169 flow. Second operand has 24 states, 24 states have (on average 13.166666666666666) internal successors, (316), 24 states have internal predecessors, (316), 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) [2024-11-08 17:11:32,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:11:32,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-11-08 17:11:32,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:11:37,570 INFO L124 PetriNetUnfolderBase]: 8085/12509 cut-off events. [2024-11-08 17:11:37,571 INFO L125 PetriNetUnfolderBase]: For 11422/11590 co-relation queries the response was YES. [2024-11-08 17:11:37,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36042 conditions, 12509 events. 8085/12509 cut-off events. For 11422/11590 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 81811 event pairs, 455 based on Foata normal form. 93/12494 useless extension candidates. Maximal degree in co-relation 33357. Up to 5879 conditions per place. [2024-11-08 17:11:37,677 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 248 selfloop transitions, 174 changer transitions 3/433 dead transitions. [2024-11-08 17:11:37,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 433 transitions, 3026 flow [2024-11-08 17:11:37,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 17:11:37,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-08 17:11:37,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 541 transitions. [2024-11-08 17:11:37,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44526748971193414 [2024-11-08 17:11:37,680 INFO L175 Difference]: Start difference. First operand has 111 places, 180 transitions, 1169 flow. Second operand 27 states and 541 transitions. [2024-11-08 17:11:37,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 433 transitions, 3026 flow [2024-11-08 17:11:37,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 433 transitions, 2940 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-11-08 17:11:37,731 INFO L231 Difference]: Finished difference. Result has 133 places, 270 transitions, 2200 flow [2024-11-08 17:11:37,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2200, PETRI_PLACES=133, PETRI_TRANSITIONS=270} [2024-11-08 17:11:37,732 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 90 predicate places. [2024-11-08 17:11:37,733 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 270 transitions, 2200 flow [2024-11-08 17:11:37,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 13.166666666666666) internal successors, (316), 24 states have internal predecessors, (316), 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) [2024-11-08 17:11:37,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:11:37,733 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:37,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:11:37,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:11:37,934 INFO L396 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)] === [2024-11-08 17:11:37,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:37,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1559776936, now seen corresponding path program 4 times [2024-11-08 17:11:37,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:37,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278828835] [2024-11-08 17:11:37,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:37,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:38,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:11:38,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:38,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278828835] [2024-11-08 17:11:38,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278828835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:11:38,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058995241] [2024-11-08 17:11:38,837 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:11:38,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:11:38,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:11:38,842 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:11:38,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:11:38,925 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:11:38,925 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:11:38,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 17:11:38,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:11:39,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 35 [2024-11-08 17:11:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:11:39,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:11:39,805 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:11:39,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 75 [2024-11-08 17:11:40,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:11:40,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058995241] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:11:40,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:11:40,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 26 [2024-11-08 17:11:40,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010526891] [2024-11-08 17:11:40,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:11:40,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 17:11:40,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:11:40,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 17:11:40,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2024-11-08 17:11:41,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-11-08 17:11:41,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 270 transitions, 2200 flow. Second operand has 27 states, 27 states have (on average 12.88888888888889) internal successors, (348), 27 states have internal predecessors, (348), 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) [2024-11-08 17:11:41,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:11:41,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-11-08 17:11:41,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:11:52,474 INFO L124 PetriNetUnfolderBase]: 33389/52834 cut-off events. [2024-11-08 17:11:52,474 INFO L125 PetriNetUnfolderBase]: For 84771/86315 co-relation queries the response was YES. [2024-11-08 17:11:52,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165617 conditions, 52834 events. 33389/52834 cut-off events. For 84771/86315 co-relation queries the response was YES. Maximal size of possible extension queue 2740. Compared 431379 event pairs, 1451 based on Foata normal form. 128/49446 useless extension candidates. Maximal degree in co-relation 155616. Up to 19224 conditions per place. [2024-11-08 17:11:53,081 INFO L140 encePairwiseOnDemand]: 21/45 looper letters, 777 selfloop transitions, 1433 changer transitions 10/2226 dead transitions. [2024-11-08 17:11:53,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 2226 transitions, 20046 flow [2024-11-08 17:11:53,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-11-08 17:11:53,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2024-11-08 17:11:53,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 1852 transitions. [2024-11-08 17:11:53,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43782505910165487 [2024-11-08 17:11:53,094 INFO L175 Difference]: Start difference. First operand has 133 places, 270 transitions, 2200 flow. Second operand 94 states and 1852 transitions. [2024-11-08 17:11:53,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 2226 transitions, 20046 flow [2024-11-08 17:11:54,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 2226 transitions, 19374 flow, removed 193 selfloop flow, removed 11 redundant places. [2024-11-08 17:11:54,047 INFO L231 Difference]: Finished difference. Result has 280 places, 1766 transitions, 19455 flow [2024-11-08 17:11:54,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=94, PETRI_FLOW=19455, PETRI_PLACES=280, PETRI_TRANSITIONS=1766} [2024-11-08 17:11:54,048 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 237 predicate places. [2024-11-08 17:11:54,048 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 1766 transitions, 19455 flow [2024-11-08 17:11:54,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 12.88888888888889) internal successors, (348), 27 states have internal predecessors, (348), 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) [2024-11-08 17:11:54,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:11:54,048 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:54,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 17:11:54,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-08 17:11:54,249 INFO L396 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)] === [2024-11-08 17:11:54,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:54,250 INFO L85 PathProgramCache]: Analyzing trace with hash -54840464, now seen corresponding path program 5 times [2024-11-08 17:11:54,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:54,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735463934] [2024-11-08 17:11:54,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:54,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:11:54,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:54,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735463934] [2024-11-08 17:11:54,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735463934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:11:54,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023248321] [2024-11-08 17:11:54,994 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 17:11:54,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:11:54,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:11:54,996 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:11:54,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:11:55,075 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:11:55,076 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:11:55,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 17:11:55,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:11:55,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 17:11:55,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 35 [2024-11-08 17:11:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:11:55,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:12:00,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 96 [2024-11-08 17:12:00,268 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:12:00,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 119 [2024-11-08 17:12:00,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 166 [2024-11-08 17:12:00,633 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-08 17:12:00,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 1 [2024-11-08 17:12:00,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 229 treesize of output 205 [2024-11-08 17:12:00,657 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-08 17:12:00,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 311 treesize of output 1 [2024-11-08 17:12:00,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:12:00,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023248321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:12:00,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:12:00,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 29 [2024-11-08 17:12:00,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884974560] [2024-11-08 17:12:00,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:12:00,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-08 17:12:00,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:12:00,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-08 17:12:00,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2024-11-08 17:12:02,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-11-08 17:12:02,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 1766 transitions, 19455 flow. Second operand has 30 states, 30 states have (on average 12.7) internal successors, (381), 30 states have internal predecessors, (381), 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) [2024-11-08 17:12:02,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:12:02,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-11-08 17:12:02,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:12:36,963 INFO L124 PetriNetUnfolderBase]: 47668/74281 cut-off events. [2024-11-08 17:12:36,963 INFO L125 PetriNetUnfolderBase]: For 1067953/1070903 co-relation queries the response was YES. [2024-11-08 17:12:38,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402197 conditions, 74281 events. 47668/74281 cut-off events. For 1067953/1070903 co-relation queries the response was YES. Maximal size of possible extension queue 4105. Compared 620638 event pairs, 2250 based on Foata normal form. 1172/74238 useless extension candidates. Maximal degree in co-relation 399980. Up to 19010 conditions per place. [2024-11-08 17:12:38,468 INFO L140 encePairwiseOnDemand]: 28/45 looper letters, 851 selfloop transitions, 2214 changer transitions 17/3174 dead transitions. [2024-11-08 17:12:38,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 3174 transitions, 39200 flow [2024-11-08 17:12:38,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-08 17:12:38,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-08 17:12:38,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 922 transitions. [2024-11-08 17:12:38,472 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.418140589569161 [2024-11-08 17:12:38,472 INFO L175 Difference]: Start difference. First operand has 280 places, 1766 transitions, 19455 flow. Second operand 49 states and 922 transitions. [2024-11-08 17:12:38,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 3174 transitions, 39200 flow [2024-11-08 17:12:59,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 3174 transitions, 38489 flow, removed 267 selfloop flow, removed 4 redundant places. [2024-11-08 17:12:59,243 INFO L231 Difference]: Finished difference. Result has 333 places, 2655 transitions, 34582 flow [2024-11-08 17:12:59,244 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=18963, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1377, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=34582, PETRI_PLACES=333, PETRI_TRANSITIONS=2655} [2024-11-08 17:12:59,245 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 290 predicate places. [2024-11-08 17:12:59,245 INFO L471 AbstractCegarLoop]: Abstraction has has 333 places, 2655 transitions, 34582 flow [2024-11-08 17:12:59,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 12.7) internal successors, (381), 30 states have internal predecessors, (381), 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) [2024-11-08 17:12:59,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:12:59,246 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:12:59,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 17:12:59,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:12:59,447 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:12:59,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:12:59,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1508457645, now seen corresponding path program 6 times [2024-11-08 17:12:59,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:12:59,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552000193] [2024-11-08 17:12:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:12:59,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:12:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:12:59,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:12:59,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:12:59,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552000193] [2024-11-08 17:12:59,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552000193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:12:59,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16107069] [2024-11-08 17:12:59,562 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 17:12:59,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:12:59,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:12:59,564 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:12:59,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ccc683-8736-4b02-a44a-bb0a4cc8a35b/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:12:59,657 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-08 17:12:59,657 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:12:59,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:12:59,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:12:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:12:59,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:12:59,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:12:59,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16107069] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:12:59,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:12:59,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-08 17:12:59,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081733525] [2024-11-08 17:12:59,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:12:59,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 17:12:59,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:12:59,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 17:12:59,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:12:59,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-11-08 17:12:59,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 2655 transitions, 34582 flow. Second operand has 14 states, 14 states have (on average 15.5) internal successors, (217), 14 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:12:59,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:12:59,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-11-08 17:12:59,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand