./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ --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 37988a2d341c7c9f3fcf434d412d9132bef9023d4105c08959698de2759206e2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:33:32,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:33:32,930 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 21:33:32,939 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:33:32,940 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:33:32,978 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:33:32,979 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:33:32,979 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:33:32,980 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:33:32,981 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:33:32,982 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:33:32,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:33:32,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:33:32,985 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:33:32,986 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:33:32,987 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:33:32,987 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:33:32,988 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:33:32,988 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:33:32,989 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:33:32,990 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:33:32,990 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:33:32,991 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:33:32,992 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:33:32,992 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:33:32,993 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:33:32,993 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:33:32,994 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:33:32,994 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:33:32,995 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:33:32,995 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:33:32,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:33:32,996 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:33:32,997 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:33:32,997 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:33:32,998 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:33:32,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:33:32,999 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:33:32,999 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:33:33,000 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:33:33,001 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:33:33,001 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:33:33,002 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_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37988a2d341c7c9f3fcf434d412d9132bef9023d4105c08959698de2759206e2 [2023-11-23 21:33:33,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:33:33,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:33:33,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:33:33,335 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:33:33,335 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:33:33,336 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2023-11-23 21:33:36,544 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:33:36,823 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:33:36,825 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2023-11-23 21:33:36,837 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/data/714622352/2841897c55a34efdba3691fbd95aa9c0/FLAG72a7d7e38 [2023-11-23 21:33:36,857 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/data/714622352/2841897c55a34efdba3691fbd95aa9c0 [2023-11-23 21:33:36,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:33:36,867 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:33:36,871 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:33:36,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:33:36,877 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:33:36,878 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:33:36" (1/1) ... [2023-11-23 21:33:36,879 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a0600c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:36, skipping insertion in model container [2023-11-23 21:33:36,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:33:36" (1/1) ... [2023-11-23 21:33:36,918 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:33:37,112 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c[2874,2887] [2023-11-23 21:33:37,125 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:33:37,136 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:33:37,164 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c[2874,2887] [2023-11-23 21:33:37,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:33:37,179 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:33:37,179 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:33:37,187 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:33:37,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:37 WrapperNode [2023-11-23 21:33:37,187 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:33:37,189 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:33:37,189 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:33:37,189 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:33:37,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:37" (1/1) ... [2023-11-23 21:33:37,212 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:37" (1/1) ... [2023-11-23 21:33:37,255 INFO L138 Inliner]: procedures = 25, calls = 58, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 291 [2023-11-23 21:33:37,255 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:33:37,256 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:33:37,256 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:33:37,257 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:33:37,275 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:37" (1/1) ... [2023-11-23 21:33:37,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:37" (1/1) ... [2023-11-23 21:33:37,280 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:37" (1/1) ... [2023-11-23 21:33:37,323 INFO L189 HeapSplitter]: Split 16 memory accesses to 5 slices as follows [2, 2, 8, 2, 2] [2023-11-23 21:33:37,323 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:37" (1/1) ... [2023-11-23 21:33:37,324 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:37" (1/1) ... [2023-11-23 21:33:37,337 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:37" (1/1) ... [2023-11-23 21:33:37,342 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:37" (1/1) ... [2023-11-23 21:33:37,346 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:37" (1/1) ... [2023-11-23 21:33:37,348 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:37" (1/1) ... [2023-11-23 21:33:37,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:33:37,355 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:33:37,355 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:33:37,355 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:33:37,378 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:37" (1/1) ... [2023-11-23 21:33:37,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:33:37,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:33:37,428 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:33:37,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:33:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:33:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:33:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 21:33:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 21:33:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 21:33:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 21:33:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 21:33:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 21:33:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 21:33:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 21:33:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 21:33:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 21:33:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 21:33:37,465 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 21:33:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 21:33:37,465 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 21:33:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-23 21:33:37,466 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-23 21:33:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 21:33:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 21:33:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 21:33:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 21:33:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 21:33:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 21:33:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 21:33:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:33:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:33:37,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:33:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:33:37,470 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:33:37,614 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:33:37,617 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:33:38,192 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:33:38,800 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:33:38,800 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-23 21:33:38,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:33:38 BoogieIcfgContainer [2023-11-23 21:33:38,802 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:33:38,804 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:33:38,804 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:33:38,808 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:33:38,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:33:36" (1/3) ... [2023-11-23 21:33:38,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ed82e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:33:38, skipping insertion in model container [2023-11-23 21:33:38,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:37" (2/3) ... [2023-11-23 21:33:38,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ed82e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:33:38, skipping insertion in model container [2023-11-23 21:33:38,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:33:38" (3/3) ... [2023-11-23 21:33:38,814 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2023-11-23 21:33:38,826 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 21:33:38,839 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:33:38,839 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:33:38,839 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:33:38,911 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-23 21:33:38,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 40 transitions, 101 flow [2023-11-23 21:33:39,009 INFO L124 PetriNetUnfolderBase]: 5/37 cut-off events. [2023-11-23 21:33:39,009 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-23 21:33:39,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 5/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-11-23 21:33:39,018 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 40 transitions, 101 flow [2023-11-23 21:33:39,032 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 36 transitions, 90 flow [2023-11-23 21:33:39,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:33:39,063 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4998cba9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:33:39,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-23 21:33:39,097 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 21:33:39,098 INFO L124 PetriNetUnfolderBase]: 5/35 cut-off events. [2023-11-23 21:33:39,099 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-23 21:33:39,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:39,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:39,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 21:33:39,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:39,108 INFO L85 PathProgramCache]: Analyzing trace with hash 449003182, now seen corresponding path program 1 times [2023-11-23 21:33:39,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:39,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137273315] [2023-11-23 21:33:39,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:39,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:39,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:39,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137273315] [2023-11-23 21:33:39,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137273315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:39,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:39,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:33:39,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211150466] [2023-11-23 21:33:39,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:39,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:33:39,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:39,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:33:39,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:39,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2023-11-23 21:33:39,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:39,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:39,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2023-11-23 21:33:39,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:40,218 INFO L124 PetriNetUnfolderBase]: 1301/1975 cut-off events. [2023-11-23 21:33:40,219 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2023-11-23 21:33:40,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4009 conditions, 1975 events. 1301/1975 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 9372 event pairs, 335 based on Foata normal form. 1/1969 useless extension candidates. Maximal degree in co-relation 3367. Up to 1333 conditions per place. [2023-11-23 21:33:40,245 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 49 selfloop transitions, 4 changer transitions 1/58 dead transitions. [2023-11-23 21:33:40,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 58 transitions, 257 flow [2023-11-23 21:33:40,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:40,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:33:40,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2023-11-23 21:33:40,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2023-11-23 21:33:40,261 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 76 transitions. [2023-11-23 21:33:40,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 76 transitions. [2023-11-23 21:33:40,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:40,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 76 transitions. [2023-11-23 21:33:40,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:40,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:40,277 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:40,279 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 90 flow. Second operand 3 states and 76 transitions. [2023-11-23 21:33:40,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 58 transitions, 257 flow [2023-11-23 21:33:40,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 58 transitions, 235 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-23 21:33:40,296 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 104 flow [2023-11-23 21:33:40,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2023-11-23 21:33:40,303 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2023-11-23 21:33:40,304 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 104 flow [2023-11-23 21:33:40,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:40,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:40,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:40,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:33:40,306 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 21:33:40,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:40,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1131771001, now seen corresponding path program 1 times [2023-11-23 21:33:40,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:40,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935557294] [2023-11-23 21:33:40,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:40,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:40,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:33:40,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:40,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935557294] [2023-11-23 21:33:40,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935557294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:40,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:40,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:33:40,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600022933] [2023-11-23 21:33:40,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:40,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:33:40,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:40,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:33:40,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:33:40,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2023-11-23 21:33:40,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:40,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:40,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2023-11-23 21:33:40,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:41,104 INFO L124 PetriNetUnfolderBase]: 1024/1671 cut-off events. [2023-11-23 21:33:41,105 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-11-23 21:33:41,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3330 conditions, 1671 events. 1024/1671 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8653 event pairs, 743 based on Foata normal form. 1/1635 useless extension candidates. Maximal degree in co-relation 1520. Up to 1426 conditions per place. [2023-11-23 21:33:41,124 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 27 selfloop transitions, 4 changer transitions 1/42 dead transitions. [2023-11-23 21:33:41,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 174 flow [2023-11-23 21:33:41,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:33:41,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:33:41,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2023-11-23 21:33:41,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2023-11-23 21:33:41,133 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 75 transitions. [2023-11-23 21:33:41,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 75 transitions. [2023-11-23 21:33:41,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:41,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 75 transitions. [2023-11-23 21:33:41,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.75) internal successors, (75), 4 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) [2023-11-23 21:33:41,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:41,145 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:41,145 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 104 flow. Second operand 4 states and 75 transitions. [2023-11-23 21:33:41,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 174 flow [2023-11-23 21:33:41,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:33:41,150 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 126 flow [2023-11-23 21:33:41,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-11-23 21:33:41,152 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-11-23 21:33:41,152 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 126 flow [2023-11-23 21:33:41,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:41,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:41,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:41,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:33:41,154 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 21:33:41,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:41,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1903058163, now seen corresponding path program 1 times [2023-11-23 21:33:41,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:41,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908025377] [2023-11-23 21:33:41,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:41,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:33:41,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:41,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908025377] [2023-11-23 21:33:41,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908025377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:41,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:41,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:33:41,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934817740] [2023-11-23 21:33:41,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:41,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:33:41,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:41,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:33:41,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:33:41,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2023-11-23 21:33:41,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:41,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:41,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2023-11-23 21:33:41,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:41,738 INFO L124 PetriNetUnfolderBase]: 1250/1933 cut-off events. [2023-11-23 21:33:41,738 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-11-23 21:33:41,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3906 conditions, 1933 events. 1250/1933 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 9530 event pairs, 401 based on Foata normal form. 0/1844 useless extension candidates. Maximal degree in co-relation 3882. Up to 968 conditions per place. [2023-11-23 21:33:41,758 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 42 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2023-11-23 21:33:41,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 248 flow [2023-11-23 21:33:41,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:33:41,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:33:41,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2023-11-23 21:33:41,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50625 [2023-11-23 21:33:41,761 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 81 transitions. [2023-11-23 21:33:41,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 81 transitions. [2023-11-23 21:33:41,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:41,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 81 transitions. [2023-11-23 21:33:41,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:41,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:41,764 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:41,764 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 126 flow. Second operand 4 states and 81 transitions. [2023-11-23 21:33:41,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 248 flow [2023-11-23 21:33:41,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 238 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-23 21:33:41,769 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 137 flow [2023-11-23 21:33:41,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2023-11-23 21:33:41,772 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2023-11-23 21:33:41,772 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 137 flow [2023-11-23 21:33:41,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:41,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:41,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:41,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:33:41,775 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 21:33:41,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:41,776 INFO L85 PathProgramCache]: Analyzing trace with hash -618918109, now seen corresponding path program 1 times [2023-11-23 21:33:41,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:41,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289815827] [2023-11-23 21:33:41,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:41,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:42,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:33:42,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:42,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289815827] [2023-11-23 21:33:42,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289815827] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:33:42,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940146328] [2023-11-23 21:33:42,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:42,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:33:42,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:33:42,019 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:33:42,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:33:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:42,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:33:42,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:42,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:33:42,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:33:42,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:33:42,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940146328] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 21:33:42,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:33:42,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-11-23 21:33:42,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559817216] [2023-11-23 21:33:42,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:42,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:33:42,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:42,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:33:42,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:33:42,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2023-11-23 21:33:42,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:42,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:42,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2023-11-23 21:33:42,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:42,704 INFO L124 PetriNetUnfolderBase]: 1278/1970 cut-off events. [2023-11-23 21:33:42,704 INFO L125 PetriNetUnfolderBase]: For 660/660 co-relation queries the response was YES. [2023-11-23 21:33:42,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4510 conditions, 1970 events. 1278/1970 cut-off events. For 660/660 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9552 event pairs, 363 based on Foata normal form. 0/1852 useless extension candidates. Maximal degree in co-relation 4480. Up to 985 conditions per place. [2023-11-23 21:33:42,728 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 41 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2023-11-23 21:33:42,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 56 transitions, 269 flow [2023-11-23 21:33:42,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:33:42,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 21:33:42,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2023-11-23 21:33:42,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455 [2023-11-23 21:33:42,733 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 91 transitions. [2023-11-23 21:33:42,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 91 transitions. [2023-11-23 21:33:42,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:42,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 91 transitions. [2023-11-23 21:33:42,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:42,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:42,742 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:42,742 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 137 flow. Second operand 5 states and 91 transitions. [2023-11-23 21:33:42,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 56 transitions, 269 flow [2023-11-23 21:33:42,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 263 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:33:42,751 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 156 flow [2023-11-23 21:33:42,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2023-11-23 21:33:42,753 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2023-11-23 21:33:42,754 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 156 flow [2023-11-23 21:33:42,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:42,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:42,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:42,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 21:33:42,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:33:42,976 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 21:33:42,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:42,977 INFO L85 PathProgramCache]: Analyzing trace with hash 358728294, now seen corresponding path program 1 times [2023-11-23 21:33:42,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:42,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794160531] [2023-11-23 21:33:42,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:42,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:44,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:44,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:44,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794160531] [2023-11-23 21:33:44,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794160531] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:33:44,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770212208] [2023-11-23 21:33:44,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:44,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:33:44,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:33:44,914 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:33:44,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:33:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:45,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-23 21:33:45,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:45,267 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 [2023-11-23 21:33:45,687 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:33:45,688 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 27 treesize of output 19 [2023-11-23 21:33:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:45,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:33:46,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:33:46,159 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 248 treesize of output 232 [2023-11-23 21:33:46,473 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:33:46,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 198 treesize of output 174 [2023-11-23 21:33:46,493 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:33:46,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 130 [2023-11-23 21:33:46,644 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:33:46,645 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 369 treesize of output 313 [2023-11-23 21:33:46,681 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:33:46,682 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 236 treesize of output 192 [2023-11-23 21:33:47,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:47,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770212208] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:33:47,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:33:47,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 30 [2023-11-23 21:33:47,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135569193] [2023-11-23 21:33:47,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:33:47,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-23 21:33:47,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:47,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-23 21:33:47,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=812, Unknown=0, NotChecked=0, Total=930 [2023-11-23 21:33:47,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2023-11-23 21:33:47,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 156 flow. Second operand has 31 states, 31 states have (on average 8.225806451612904) internal successors, (255), 31 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:47,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:47,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2023-11-23 21:33:47,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:50,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 21:33:52,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 21:33:54,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 21:33:56,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 21:33:58,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 21:34:00,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 21:34:02,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 21:34:04,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 21:34:06,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 21:34:08,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 21:34:12,077 INFO L124 PetriNetUnfolderBase]: 5242/7773 cut-off events. [2023-11-23 21:34:12,078 INFO L125 PetriNetUnfolderBase]: For 3486/3486 co-relation queries the response was YES. [2023-11-23 21:34:12,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19918 conditions, 7773 events. 5242/7773 cut-off events. For 3486/3486 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 42582 event pairs, 289 based on Foata normal form. 2/7772 useless extension candidates. Maximal degree in co-relation 11378. Up to 2763 conditions per place. [2023-11-23 21:34:12,157 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 295 selfloop transitions, 112 changer transitions 2/413 dead transitions. [2023-11-23 21:34:12,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 413 transitions, 2084 flow [2023-11-23 21:34:12,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-23 21:34:12,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-23 21:34:12,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 607 transitions. [2023-11-23 21:34:12,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44632352941176473 [2023-11-23 21:34:12,163 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 607 transitions. [2023-11-23 21:34:12,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 607 transitions. [2023-11-23 21:34:12,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:34:12,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 607 transitions. [2023-11-23 21:34:12,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 17.852941176470587) internal successors, (607), 34 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:34:12,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 40.0) internal successors, (1400), 35 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:34:12,172 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 40.0) internal successors, (1400), 35 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:34:12,173 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 156 flow. Second operand 34 states and 607 transitions. [2023-11-23 21:34:12,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 413 transitions, 2084 flow [2023-11-23 21:34:12,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 413 transitions, 2064 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-23 21:34:12,193 INFO L231 Difference]: Finished difference. Result has 102 places, 154 transitions, 1018 flow [2023-11-23 21:34:12,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1018, PETRI_PLACES=102, PETRI_TRANSITIONS=154} [2023-11-23 21:34:12,196 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 61 predicate places. [2023-11-23 21:34:12,196 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 154 transitions, 1018 flow [2023-11-23 21:34:12,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 8.225806451612904) internal successors, (255), 31 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:34:12,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:34:12,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:34:12,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:34:12,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:34:12,424 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 21:34:12,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:12,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1197051504, now seen corresponding path program 2 times [2023-11-23 21:34:12,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:12,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940876097] [2023-11-23 21:34:12,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:12,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:13,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:13,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:13,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940876097] [2023-11-23 21:34:13,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940876097] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:34:13,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274411412] [2023-11-23 21:34:13,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:34:13,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:34:13,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:34:13,854 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:34:13,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:34:14,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:34:14,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:34:14,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-23 21:34:14,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:34:14,123 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 [2023-11-23 21:34:14,400 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:34:14,400 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 27 treesize of output 19 [2023-11-23 21:34:14,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:14,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:34:14,730 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:34:14,731 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 248 treesize of output 232 [2023-11-23 21:34:14,990 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:34:14,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 214 treesize of output 190 [2023-11-23 21:34:15,009 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:34:15,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 130 [2023-11-23 21:34:15,147 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:34:15,147 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 112 treesize of output 104 [2023-11-23 21:34:15,166 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:34:15,167 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 84 treesize of output 68 [2023-11-23 21:34:15,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:15,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274411412] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:34:15,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:34:15,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 28 [2023-11-23 21:34:15,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132870312] [2023-11-23 21:34:15,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:34:15,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-23 21:34:15,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:15,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-23 21:34:15,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2023-11-23 21:34:15,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2023-11-23 21:34:15,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 154 transitions, 1018 flow. Second operand has 29 states, 29 states have (on average 8.310344827586206) internal successors, (241), 29 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:34:15,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:34:15,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2023-11-23 21:34:15,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:34:20,842 INFO L124 PetriNetUnfolderBase]: 7884/11482 cut-off events. [2023-11-23 21:34:20,842 INFO L125 PetriNetUnfolderBase]: For 44660/44660 co-relation queries the response was YES. [2023-11-23 21:34:20,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44171 conditions, 11482 events. 7884/11482 cut-off events. For 44660/44660 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 65727 event pairs, 759 based on Foata normal form. 1/11479 useless extension candidates. Maximal degree in co-relation 38850. Up to 7029 conditions per place. [2023-11-23 21:34:20,975 INFO L140 encePairwiseOnDemand]: 23/40 looper letters, 335 selfloop transitions, 129 changer transitions 1/469 dead transitions. [2023-11-23 21:34:20,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 469 transitions, 3573 flow [2023-11-23 21:34:20,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-23 21:34:20,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-23 21:34:20,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 545 transitions. [2023-11-23 21:34:20,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4007352941176471 [2023-11-23 21:34:20,979 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 545 transitions. [2023-11-23 21:34:20,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 545 transitions. [2023-11-23 21:34:20,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:34:20,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 545 transitions. [2023-11-23 21:34:20,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 16.029411764705884) internal successors, (545), 34 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:34:20,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 40.0) internal successors, (1400), 35 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:34:20,987 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 40.0) internal successors, (1400), 35 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:34:20,987 INFO L175 Difference]: Start difference. First operand has 102 places, 154 transitions, 1018 flow. Second operand 34 states and 545 transitions. [2023-11-23 21:34:20,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 469 transitions, 3573 flow [2023-11-23 21:34:21,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 469 transitions, 3373 flow, removed 96 selfloop flow, removed 2 redundant places. [2023-11-23 21:34:21,265 INFO L231 Difference]: Finished difference. Result has 151 places, 258 transitions, 2279 flow [2023-11-23 21:34:21,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2279, PETRI_PLACES=151, PETRI_TRANSITIONS=258} [2023-11-23 21:34:21,269 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 110 predicate places. [2023-11-23 21:34:21,269 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 258 transitions, 2279 flow [2023-11-23 21:34:21,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.310344827586206) internal successors, (241), 29 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:34:21,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:34:21,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:34:21,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:34:21,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:34:21,491 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 21:34:21,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:21,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1669322798, now seen corresponding path program 3 times [2023-11-23 21:34:21,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:21,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154989444] [2023-11-23 21:34:21,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:21,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:23,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:23,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154989444] [2023-11-23 21:34:23,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154989444] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:34:23,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648914906] [2023-11-23 21:34:23,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:34:23,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:34:23,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:34:23,183 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:34:23,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ca18a5-6981-48c4-a829-97f1b3eb5234/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:34:23,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 21:34:23,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:34:23,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-23 21:34:23,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:34:23,540 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 [2023-11-23 21:34:23,964 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:34:23,964 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 27 treesize of output 19 [2023-11-23 21:34:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:24,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:34:24,454 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:34:24,454 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 256 treesize of output 240 [2023-11-23 21:34:24,760 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:34:24,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 300 treesize of output 260 [2023-11-23 21:34:24,789 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:34:24,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 236 treesize of output 192 [2023-11-23 21:34:24,943 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-23 21:34:24,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 198 treesize of output 169 [2023-11-23 21:34:24,957 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:34:24,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 92 [2023-11-23 21:34:25,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:34:25,008 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 211 [2023-11-23 21:34:25,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:34:25,029 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 110 [2023-11-23 21:34:25,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:34:25,107 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 21:34:25,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 156 treesize of output 1 [2023-11-23 21:34:25,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:34:25,120 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 198 treesize of output 162 [2023-11-23 21:34:25,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:34:25,134 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 101 [2023-11-23 21:34:25,184 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:34:25,185 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:34:25,187 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-23 21:34:25,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:34:25,204 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 21:34:25,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 172 treesize of output 1 [2023-11-23 21:34:25,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:34:25,215 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 50 [2023-11-23 21:34:25,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:34:25,251 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 369 treesize of output 295 [2023-11-23 21:34:25,272 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-23 21:34:25,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:34:25,283 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 94 [2023-11-23 21:34:25,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:34:25,292 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 41 [2023-11-23 21:34:25,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:34:25,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 178 [2023-11-23 21:34:25,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:34:25,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 101 [2023-11-23 21:34:25,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:34:25,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 94 [2023-11-23 21:34:25,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:34:25,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 41 [2023-11-23 21:34:25,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:25,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648914906] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:34:25,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:34:25,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 33 [2023-11-23 21:34:25,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723277590] [2023-11-23 21:34:25,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:34:25,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-23 21:34:25,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:25,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-23 21:34:25,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=984, Unknown=0, NotChecked=0, Total=1122