./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_4c47d4d5-5b10-4e23-9705-5e060448891d/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c47d4d5-5b10-4e23-9705-5e060448891d/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c47d4d5-5b10-4e23-9705-5e060448891d/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c47d4d5-5b10-4e23-9705-5e060448891d/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c47d4d5-5b10-4e23-9705-5e060448891d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c47d4d5-5b10-4e23-9705-5e060448891d/bin/uautomizer-verify-uTZkv6EMXl --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 69f73d75edf25d106d657bdc186907312ee3ef2bf4e5da547c0ac3641991b71d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:28:04,735 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:28:04,811 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c47d4d5-5b10-4e23-9705-5e060448891d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:28:04,817 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:28:04,818 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:28:04,844 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:28:04,845 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:28:04,846 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:28:04,847 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:28:04,847 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:28:04,848 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:28:04,849 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:28:04,849 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:28:04,850 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:28:04,850 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:28:04,851 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:28:04,851 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:28:04,852 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:28:04,852 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:28:04,853 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:28:04,853 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:28:04,854 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:28:04,854 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:28:04,855 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:28:04,855 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:28:04,856 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:28:04,856 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:28:04,857 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:28:04,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:28:04,858 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:28:04,858 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:28:04,858 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:28:04,859 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:28:04,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:28:04,859 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:28:04,860 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:28:04,860 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:28:04,860 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:28:04,860 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:28:04,860 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_4c47d4d5-5b10-4e23-9705-5e060448891d/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c47d4d5-5b10-4e23-9705-5e060448891d/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69f73d75edf25d106d657bdc186907312ee3ef2bf4e5da547c0ac3641991b71d [2023-11-12 02:28:05,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:28:05,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:28:05,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:28:05,134 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:28:05,134 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:28:05,136 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c47d4d5-5b10-4e23-9705-5e060448891d/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/test-easy6.wvr.c [2023-11-12 02:28:08,264 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:28:08,530 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:28:08,531 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c47d4d5-5b10-4e23-9705-5e060448891d/sv-benchmarks/c/weaver/test-easy6.wvr.c [2023-11-12 02:28:08,543 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c47d4d5-5b10-4e23-9705-5e060448891d/bin/uautomizer-verify-uTZkv6EMXl/data/4ec645f3a/a0b954ae87994a8dbaac029ec4c07472/FLAG170a00b34 [2023-11-12 02:28:08,565 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c47d4d5-5b10-4e23-9705-5e060448891d/bin/uautomizer-verify-uTZkv6EMXl/data/4ec645f3a/a0b954ae87994a8dbaac029ec4c07472 [2023-11-12 02:28:08,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:28:08,576 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:28:08,578 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:28:08,578 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:28:08,585 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:28:08,588 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:28:08" (1/1) ... [2023-11-12 02:28:08,589 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32c33916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:08, skipping insertion in model container [2023-11-12 02:28:08,590 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:28:08" (1/1) ... [2023-11-12 02:28:08,632 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:28:08,881 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_4c47d4d5-5b10-4e23-9705-5e060448891d/sv-benchmarks/c/weaver/test-easy6.wvr.c[3072,3085] [2023-11-12 02:28:08,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:28:08,901 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:28:08,926 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_4c47d4d5-5b10-4e23-9705-5e060448891d/sv-benchmarks/c/weaver/test-easy6.wvr.c[3072,3085] [2023-11-12 02:28:08,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:28:08,936 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:28:08,936 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:28:08,945 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:28:08,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:08 WrapperNode [2023-11-12 02:28:08,946 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:28:08,947 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:28:08,947 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:28:08,947 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:28:08,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:08" (1/1) ... [2023-11-12 02:28:08,971 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:08" (1/1) ... [2023-11-12 02:28:08,996 INFO L138 Inliner]: procedures = 21, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 124 [2023-11-12 02:28:08,996 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:28:08,997 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:28:08,997 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:28:08,998 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:28:09,008 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:08" (1/1) ... [2023-11-12 02:28:09,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:08" (1/1) ... [2023-11-12 02:28:09,012 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:08" (1/1) ... [2023-11-12 02:28:09,012 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:08" (1/1) ... [2023-11-12 02:28:09,018 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:08" (1/1) ... [2023-11-12 02:28:09,020 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:08" (1/1) ... [2023-11-12 02:28:09,021 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:08" (1/1) ... [2023-11-12 02:28:09,023 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:08" (1/1) ... [2023-11-12 02:28:09,026 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:28:09,027 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:28:09,027 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:28:09,027 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:28:09,028 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:08" (1/1) ... [2023-11-12 02:28:09,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:28:09,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c47d4d5-5b10-4e23-9705-5e060448891d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:09,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c47d4d5-5b10-4e23-9705-5e060448891d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:28:09,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c47d4d5-5b10-4e23-9705-5e060448891d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:28:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:28:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:28:09,114 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:28:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:28:09,114 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:28:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:28:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:28:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:28:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:28:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:28:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:28:09,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:28:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:28:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:28:09,118 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:28:09,220 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:28:09,222 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:28:09,457 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:28:09,567 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:28:09,567 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:28:09,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:28:09 BoogieIcfgContainer [2023-11-12 02:28:09,571 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:28:09,587 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:28:09,587 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:28:09,591 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:28:09,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:28:08" (1/3) ... [2023-11-12 02:28:09,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319339c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:28:09, skipping insertion in model container [2023-11-12 02:28:09,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:08" (2/3) ... [2023-11-12 02:28:09,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319339c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:28:09, skipping insertion in model container [2023-11-12 02:28:09,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:28:09" (3/3) ... [2023-11-12 02:28:09,594 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2023-11-12 02:28:09,604 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:28:09,616 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:28:09,616 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:28:09,616 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:28:09,725 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:28:09,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 81 transitions, 176 flow [2023-11-12 02:28:09,898 INFO L124 PetriNetUnfolderBase]: 1/79 cut-off events. [2023-11-12 02:28:09,899 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:28:09,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 79 events. 1/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2023-11-12 02:28:09,904 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 81 transitions, 176 flow [2023-11-12 02:28:09,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 70 transitions, 152 flow [2023-11-12 02:28:09,916 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:28:09,936 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 70 transitions, 152 flow [2023-11-12 02:28:09,948 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 70 transitions, 152 flow [2023-11-12 02:28:09,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 70 transitions, 152 flow [2023-11-12 02:28:09,996 INFO L124 PetriNetUnfolderBase]: 1/70 cut-off events. [2023-11-12 02:28:10,000 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:28:10,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 70 events. 1/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2023-11-12 02:28:10,002 INFO L119 LiptonReduction]: Number of co-enabled transitions 648 [2023-11-12 02:28:12,155 INFO L134 LiptonReduction]: Checked pairs total: 3236 [2023-11-12 02:28:12,155 INFO L136 LiptonReduction]: Total number of compositions: 48 [2023-11-12 02:28:12,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:28:12,180 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;@490842be, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:28:12,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-12 02:28:12,188 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:28:12,188 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2023-11-12 02:28:12,189 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:28:12,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:12,189 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] [2023-11-12 02:28:12,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-12 02:28:12,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:12,196 INFO L85 PathProgramCache]: Analyzing trace with hash -128271386, now seen corresponding path program 1 times [2023-11-12 02:28:12,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:12,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542395433] [2023-11-12 02:28:12,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:12,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:12,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:12,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:12,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542395433] [2023-11-12 02:28:12,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542395433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:12,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:12,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:28:12,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338614371] [2023-11-12 02:28:12,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:12,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:28:12,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:12,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:28:12,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:28:13,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 129 [2023-11-12 02:28:13,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 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) [2023-11-12 02:28:13,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:13,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 129 [2023-11-12 02:28:13,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:13,373 INFO L124 PetriNetUnfolderBase]: 172/373 cut-off events. [2023-11-12 02:28:13,373 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-12 02:28:13,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 373 events. 172/373 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1482 event pairs, 64 based on Foata normal form. 1/366 useless extension candidates. Maximal degree in co-relation 625. Up to 125 conditions per place. [2023-11-12 02:28:13,382 INFO L140 encePairwiseOnDemand]: 123/129 looper letters, 37 selfloop transitions, 6 changer transitions 17/66 dead transitions. [2023-11-12 02:28:13,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 66 transitions, 288 flow [2023-11-12 02:28:13,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:28:13,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:28:13,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 509 transitions. [2023-11-12 02:28:13,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5636766334440753 [2023-11-12 02:28:13,412 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 509 transitions. [2023-11-12 02:28:13,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 509 transitions. [2023-11-12 02:28:13,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:13,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 509 transitions. [2023-11-12 02:28:13,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 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) [2023-11-12 02:28:13,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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) [2023-11-12 02:28:13,436 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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) [2023-11-12 02:28:13,438 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 66 flow. Second operand 7 states and 509 transitions. [2023-11-12 02:28:13,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 66 transitions, 288 flow [2023-11-12 02:28:13,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 66 transitions, 264 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:28:13,446 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 93 flow [2023-11-12 02:28:13,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=93, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2023-11-12 02:28:13,452 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-11-12 02:28:13,452 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 93 flow [2023-11-12 02:28:13,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 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) [2023-11-12 02:28:13,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:13,453 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] [2023-11-12 02:28:13,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:28:13,454 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-12 02:28:13,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:13,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1429453484, now seen corresponding path program 2 times [2023-11-12 02:28:13,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:13,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755831658] [2023-11-12 02:28:13,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:13,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:13,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:13,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:13,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755831658] [2023-11-12 02:28:13,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755831658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:13,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:13,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:28:13,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268905856] [2023-11-12 02:28:13,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:13,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:28:13,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:13,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:28:13,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:28:13,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 129 [2023-11-12 02:28:13,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 93 flow. Second operand has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 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) [2023-11-12 02:28:13,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:13,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 129 [2023-11-12 02:28:13,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:14,008 INFO L124 PetriNetUnfolderBase]: 243/614 cut-off events. [2023-11-12 02:28:14,008 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-12 02:28:14,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1225 conditions, 614 events. 243/614 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3281 event pairs, 43 based on Foata normal form. 6/612 useless extension candidates. Maximal degree in co-relation 1201. Up to 120 conditions per place. [2023-11-12 02:28:14,015 INFO L140 encePairwiseOnDemand]: 121/129 looper letters, 44 selfloop transitions, 11 changer transitions 14/79 dead transitions. [2023-11-12 02:28:14,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 79 transitions, 334 flow [2023-11-12 02:28:14,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:28:14,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:28:14,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 619 transitions. [2023-11-12 02:28:14,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.533161068044789 [2023-11-12 02:28:14,020 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 619 transitions. [2023-11-12 02:28:14,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 619 transitions. [2023-11-12 02:28:14,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:14,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 619 transitions. [2023-11-12 02:28:14,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 68.77777777777777) internal successors, (619), 9 states have internal predecessors, (619), 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) [2023-11-12 02:28:14,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 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) [2023-11-12 02:28:14,028 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 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) [2023-11-12 02:28:14,029 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 93 flow. Second operand 9 states and 619 transitions. [2023-11-12 02:28:14,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 79 transitions, 334 flow [2023-11-12 02:28:14,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 79 transitions, 330 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-12 02:28:14,033 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 165 flow [2023-11-12 02:28:14,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=165, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2023-11-12 02:28:14,035 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-11-12 02:28:14,035 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 165 flow [2023-11-12 02:28:14,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 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) [2023-11-12 02:28:14,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:14,036 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] [2023-11-12 02:28:14,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:28:14,037 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-12 02:28:14,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:14,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1223490994, now seen corresponding path program 3 times [2023-11-12 02:28:14,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:14,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75183349] [2023-11-12 02:28:14,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:14,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:14,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:14,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:14,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75183349] [2023-11-12 02:28:14,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75183349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:14,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:14,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:28:14,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924019565] [2023-11-12 02:28:14,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:14,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:28:14,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:14,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:28:14,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:14,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 129 [2023-11-12 02:28:14,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:14,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:14,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 129 [2023-11-12 02:28:14,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:14,272 INFO L124 PetriNetUnfolderBase]: 167/496 cut-off events. [2023-11-12 02:28:14,272 INFO L125 PetriNetUnfolderBase]: For 460/480 co-relation queries the response was YES. [2023-11-12 02:28:14,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1277 conditions, 496 events. 167/496 cut-off events. For 460/480 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2717 event pairs, 117 based on Foata normal form. 12/490 useless extension candidates. Maximal degree in co-relation 1035. Up to 329 conditions per place. [2023-11-12 02:28:14,281 INFO L140 encePairwiseOnDemand]: 126/129 looper letters, 27 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-12 02:28:14,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 246 flow [2023-11-12 02:28:14,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:28:14,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:28:14,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-11-12 02:28:14,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5917312661498708 [2023-11-12 02:28:14,284 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-11-12 02:28:14,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-11-12 02:28:14,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:14,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-11-12 02:28:14,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2023-11-12 02:28:14,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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) [2023-11-12 02:28:14,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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) [2023-11-12 02:28:14,288 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 165 flow. Second operand 3 states and 229 transitions. [2023-11-12 02:28:14,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 246 flow [2023-11-12 02:28:14,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 244 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:28:14,297 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 171 flow [2023-11-12 02:28:14,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2023-11-12 02:28:14,299 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-11-12 02:28:14,303 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 171 flow [2023-11-12 02:28:14,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:14,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:14,304 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] [2023-11-12 02:28:14,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:28:14,305 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-12 02:28:14,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:14,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1842344046, now seen corresponding path program 4 times [2023-11-12 02:28:14,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:14,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581468665] [2023-11-12 02:28:14,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:14,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:14,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:14,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581468665] [2023-11-12 02:28:14,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581468665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:14,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:14,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:28:14,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7101478] [2023-11-12 02:28:14,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:14,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:28:14,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:14,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:28:14,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:28:14,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 129 [2023-11-12 02:28:14,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 171 flow. Second operand has 7 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 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) [2023-11-12 02:28:14,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:14,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 129 [2023-11-12 02:28:14,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:14,711 INFO L124 PetriNetUnfolderBase]: 276/621 cut-off events. [2023-11-12 02:28:14,712 INFO L125 PetriNetUnfolderBase]: For 392/396 co-relation queries the response was YES. [2023-11-12 02:28:14,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1727 conditions, 621 events. 276/621 cut-off events. For 392/396 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2936 event pairs, 109 based on Foata normal form. 4/615 useless extension candidates. Maximal degree in co-relation 944. Up to 204 conditions per place. [2023-11-12 02:28:14,717 INFO L140 encePairwiseOnDemand]: 124/129 looper letters, 35 selfloop transitions, 5 changer transitions 22/72 dead transitions. [2023-11-12 02:28:14,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 72 transitions, 427 flow [2023-11-12 02:28:14,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:28:14,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:28:14,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 498 transitions. [2023-11-12 02:28:14,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5514950166112956 [2023-11-12 02:28:14,720 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 498 transitions. [2023-11-12 02:28:14,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 498 transitions. [2023-11-12 02:28:14,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:14,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 498 transitions. [2023-11-12 02:28:14,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 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) [2023-11-12 02:28:14,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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) [2023-11-12 02:28:14,726 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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) [2023-11-12 02:28:14,726 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 171 flow. Second operand 7 states and 498 transitions. [2023-11-12 02:28:14,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 72 transitions, 427 flow [2023-11-12 02:28:14,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 72 transitions, 421 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:28:14,732 INFO L231 Difference]: Finished difference. Result has 55 places, 37 transitions, 170 flow [2023-11-12 02:28:14,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=170, PETRI_PLACES=55, PETRI_TRANSITIONS=37} [2023-11-12 02:28:14,733 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2023-11-12 02:28:14,733 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions, 170 flow [2023-11-12 02:28:14,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 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) [2023-11-12 02:28:14,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:14,734 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] [2023-11-12 02:28:14,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:28:14,735 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-12 02:28:14,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:14,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1894567242, now seen corresponding path program 5 times [2023-11-12 02:28:14,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:14,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545911804] [2023-11-12 02:28:14,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:14,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:14,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:14,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:14,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545911804] [2023-11-12 02:28:14,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545911804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:14,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:14,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:28:14,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703385506] [2023-11-12 02:28:14,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:14,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:28:14,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:14,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:28:14,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:28:14,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 129 [2023-11-12 02:28:14,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 37 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 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) [2023-11-12 02:28:14,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:14,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 129 [2023-11-12 02:28:14,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:15,272 INFO L124 PetriNetUnfolderBase]: 209/552 cut-off events. [2023-11-12 02:28:15,273 INFO L125 PetriNetUnfolderBase]: For 502/530 co-relation queries the response was YES. [2023-11-12 02:28:15,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1497 conditions, 552 events. 209/552 cut-off events. For 502/530 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2847 event pairs, 69 based on Foata normal form. 24/562 useless extension candidates. Maximal degree in co-relation 1465. Up to 137 conditions per place. [2023-11-12 02:28:15,278 INFO L140 encePairwiseOnDemand]: 122/129 looper letters, 38 selfloop transitions, 7 changer transitions 15/68 dead transitions. [2023-11-12 02:28:15,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 383 flow [2023-11-12 02:28:15,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:28:15,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:28:15,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 426 transitions. [2023-11-12 02:28:15,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5503875968992248 [2023-11-12 02:28:15,281 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 426 transitions. [2023-11-12 02:28:15,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 426 transitions. [2023-11-12 02:28:15,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:15,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 426 transitions. [2023-11-12 02:28:15,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 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) [2023-11-12 02:28:15,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 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) [2023-11-12 02:28:15,287 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 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) [2023-11-12 02:28:15,287 INFO L175 Difference]: Start difference. First operand has 55 places, 37 transitions, 170 flow. Second operand 6 states and 426 transitions. [2023-11-12 02:28:15,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 383 flow [2023-11-12 02:28:15,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 68 transitions, 366 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-12 02:28:15,293 INFO L231 Difference]: Finished difference. Result has 53 places, 35 transitions, 161 flow [2023-11-12 02:28:15,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=53, PETRI_TRANSITIONS=35} [2023-11-12 02:28:15,294 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 19 predicate places. [2023-11-12 02:28:15,294 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 35 transitions, 161 flow [2023-11-12 02:28:15,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 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) [2023-11-12 02:28:15,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:15,295 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] [2023-11-12 02:28:15,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:28:15,296 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-12 02:28:15,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:15,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1592500224, now seen corresponding path program 6 times [2023-11-12 02:28:15,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:15,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183675093] [2023-11-12 02:28:15,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:15,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:15,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:15,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183675093] [2023-11-12 02:28:15,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183675093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:15,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:15,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:28:15,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720944345] [2023-11-12 02:28:15,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:15,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:28:15,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:15,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:28:15,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:15,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 129 [2023-11-12 02:28:15,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 35 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:15,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:15,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 129 [2023-11-12 02:28:15,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:15,449 INFO L124 PetriNetUnfolderBase]: 119/364 cut-off events. [2023-11-12 02:28:15,449 INFO L125 PetriNetUnfolderBase]: For 432/450 co-relation queries the response was YES. [2023-11-12 02:28:15,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 364 events. 119/364 cut-off events. For 432/450 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1751 event pairs, 115 based on Foata normal form. 10/360 useless extension candidates. Maximal degree in co-relation 416. Up to 271 conditions per place. [2023-11-12 02:28:15,452 INFO L140 encePairwiseOnDemand]: 126/129 looper letters, 22 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-11-12 02:28:15,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 37 transitions, 214 flow [2023-11-12 02:28:15,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:28:15,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:28:15,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-11-12 02:28:15,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2023-11-12 02:28:15,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-11-12 02:28:15,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-11-12 02:28:15,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:15,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-11-12 02:28:15,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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) [2023-11-12 02:28:15,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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) [2023-11-12 02:28:15,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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) [2023-11-12 02:28:15,459 INFO L175 Difference]: Start difference. First operand has 53 places, 35 transitions, 161 flow. Second operand 3 states and 225 transitions. [2023-11-12 02:28:15,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 37 transitions, 214 flow [2023-11-12 02:28:15,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 37 transitions, 192 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-12 02:28:15,462 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 147 flow [2023-11-12 02:28:15,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-11-12 02:28:15,463 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2023-11-12 02:28:15,464 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 147 flow [2023-11-12 02:28:15,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:15,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:15,464 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] [2023-11-12 02:28:15,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:28:15,465 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-12 02:28:15,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:15,466 INFO L85 PathProgramCache]: Analyzing trace with hash 938938380, now seen corresponding path program 7 times [2023-11-12 02:28:15,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:15,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796373810] [2023-11-12 02:28:15,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:15,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:15,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:15,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796373810] [2023-11-12 02:28:15,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796373810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:15,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:15,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:28:15,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479940740] [2023-11-12 02:28:15,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:15,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:28:15,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:15,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:28:15,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:28:15,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 129 [2023-11-12 02:28:15,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 147 flow. Second operand has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 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) [2023-11-12 02:28:15,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:15,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 129 [2023-11-12 02:28:15,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:15,828 INFO L124 PetriNetUnfolderBase]: 123/320 cut-off events. [2023-11-12 02:28:15,829 INFO L125 PetriNetUnfolderBase]: For 254/262 co-relation queries the response was YES. [2023-11-12 02:28:15,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 320 events. 123/320 cut-off events. For 254/262 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1315 event pairs, 63 based on Foata normal form. 10/320 useless extension candidates. Maximal degree in co-relation 679. Up to 137 conditions per place. [2023-11-12 02:28:15,832 INFO L140 encePairwiseOnDemand]: 122/129 looper letters, 23 selfloop transitions, 3 changer transitions 10/44 dead transitions. [2023-11-12 02:28:15,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 240 flow [2023-11-12 02:28:15,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:28:15,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:28:15,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 342 transitions. [2023-11-12 02:28:15,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5302325581395348 [2023-11-12 02:28:15,835 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 342 transitions. [2023-11-12 02:28:15,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 342 transitions. [2023-11-12 02:28:15,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:15,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 342 transitions. [2023-11-12 02:28:15,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 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) [2023-11-12 02:28:15,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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) [2023-11-12 02:28:15,841 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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) [2023-11-12 02:28:15,841 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 147 flow. Second operand 5 states and 342 transitions. [2023-11-12 02:28:15,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 240 flow [2023-11-12 02:28:15,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 44 transitions, 234 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-12 02:28:15,846 INFO L231 Difference]: Finished difference. Result has 50 places, 29 transitions, 117 flow [2023-11-12 02:28:15,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=50, PETRI_TRANSITIONS=29} [2023-11-12 02:28:15,847 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-11-12 02:28:15,848 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 29 transitions, 117 flow [2023-11-12 02:28:15,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 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) [2023-11-12 02:28:15,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:15,848 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] [2023-11-12 02:28:15,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:28:15,849 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-12 02:28:15,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:15,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1937210788, now seen corresponding path program 8 times [2023-11-12 02:28:15,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:15,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045642462] [2023-11-12 02:28:15,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:15,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:16,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:16,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:16,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045642462] [2023-11-12 02:28:16,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045642462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:16,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:16,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:28:16,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599826266] [2023-11-12 02:28:16,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:16,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:28:16,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:16,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:28:16,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:28:16,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 129 [2023-11-12 02:28:16,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 29 transitions, 117 flow. Second operand has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 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) [2023-11-12 02:28:16,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:16,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 129 [2023-11-12 02:28:16,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:16,140 INFO L124 PetriNetUnfolderBase]: 53/136 cut-off events. [2023-11-12 02:28:16,140 INFO L125 PetriNetUnfolderBase]: For 89/91 co-relation queries the response was YES. [2023-11-12 02:28:16,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 136 events. 53/136 cut-off events. For 89/91 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 394 event pairs, 18 based on Foata normal form. 8/144 useless extension candidates. Maximal degree in co-relation 369. Up to 31 conditions per place. [2023-11-12 02:28:16,142 INFO L140 encePairwiseOnDemand]: 123/129 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2023-11-12 02:28:16,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 31 transitions, 175 flow [2023-11-12 02:28:16,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:28:16,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:28:16,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 455 transitions. [2023-11-12 02:28:16,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5038759689922481 [2023-11-12 02:28:16,145 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 455 transitions. [2023-11-12 02:28:16,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 455 transitions. [2023-11-12 02:28:16,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:16,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 455 transitions. [2023-11-12 02:28:16,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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) [2023-11-12 02:28:16,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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) [2023-11-12 02:28:16,151 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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) [2023-11-12 02:28:16,151 INFO L175 Difference]: Start difference. First operand has 50 places, 29 transitions, 117 flow. Second operand 7 states and 455 transitions. [2023-11-12 02:28:16,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 31 transitions, 175 flow [2023-11-12 02:28:16,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 140 flow, removed 11 selfloop flow, removed 10 redundant places. [2023-11-12 02:28:16,153 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-11-12 02:28:16,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-11-12 02:28:16,154 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-11-12 02:28:16,154 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-11-12 02:28:16,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 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) [2023-11-12 02:28:16,158 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-12 02:28:16,158 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-12 02:28:16,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-12 02:28:16,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:28:16,159 INFO L445 BasicCegarLoop]: Path program histogram: [8] [2023-11-12 02:28:16,163 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:28:16,163 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:28:16,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:28:16 BasicIcfg [2023-11-12 02:28:16,167 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:28:16,168 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:28:16,168 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:28:16,168 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:28:16,169 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:28:09" (3/4) ... [2023-11-12 02:28:16,171 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:28:16,175 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-12 02:28:16,175 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-12 02:28:16,180 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-12 02:28:16,180 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-12 02:28:16,180 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:28:16,180 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 02:28:16,256 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c47d4d5-5b10-4e23-9705-5e060448891d/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:28:16,257 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c47d4d5-5b10-4e23-9705-5e060448891d/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:28:16,258 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:28:16,258 INFO L158 Benchmark]: Toolchain (without parser) took 7682.74ms. Allocated memory was 134.2MB in the beginning and 207.6MB in the end (delta: 73.4MB). Free memory was 88.9MB in the beginning and 137.3MB in the end (delta: -48.3MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. [2023-11-12 02:28:16,259 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:28:16,259 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.18ms. Allocated memory is still 134.2MB. Free memory was 88.5MB in the beginning and 77.1MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 02:28:16,260 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.54ms. Allocated memory is still 134.2MB. Free memory was 77.1MB in the beginning and 75.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:28:16,260 INFO L158 Benchmark]: Boogie Preprocessor took 28.66ms. Allocated memory is still 134.2MB. Free memory was 75.4MB in the beginning and 73.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:28:16,261 INFO L158 Benchmark]: RCFGBuilder took 544.21ms. Allocated memory was 134.2MB in the beginning and 172.0MB in the end (delta: 37.7MB). Free memory was 73.8MB in the beginning and 140.3MB in the end (delta: -66.4MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2023-11-12 02:28:16,261 INFO L158 Benchmark]: TraceAbstraction took 6580.45ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 142.0MB in the beginning and 141.4MB in the end (delta: 515.2kB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2023-11-12 02:28:16,262 INFO L158 Benchmark]: Witness Printer took 89.89ms. Allocated memory is still 207.6MB. Free memory was 141.4MB in the beginning and 137.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:28:16,264 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 368.18ms. Allocated memory is still 134.2MB. Free memory was 88.5MB in the beginning and 77.1MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.54ms. Allocated memory is still 134.2MB. Free memory was 77.1MB in the beginning and 75.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.66ms. Allocated memory is still 134.2MB. Free memory was 75.4MB in the beginning and 73.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 544.21ms. Allocated memory was 134.2MB in the beginning and 172.0MB in the end (delta: 37.7MB). Free memory was 73.8MB in the beginning and 140.3MB in the end (delta: -66.4MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6580.45ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 142.0MB in the beginning and 141.4MB in the end (delta: 515.2kB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. * Witness Printer took 89.89ms. Allocated memory is still 207.6MB. Free memory was 141.4MB in the beginning and 137.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 76 PlacesBefore, 34 PlacesAfterwards, 70 TransitionsBefore, 27 TransitionsAfterwards, 648 CoEnabledTransitionPairs, 5 FixpointIterations, 31 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 48 TotalNumberOfCompositions, 3236 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1747, independent: 1548, independent conditional: 0, independent unconditional: 1548, dependent: 199, dependent conditional: 0, dependent unconditional: 199, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 354, independent: 333, independent conditional: 0, independent unconditional: 333, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1747, independent: 1215, independent conditional: 0, independent unconditional: 1215, dependent: 178, dependent conditional: 0, dependent unconditional: 178, unknown: 354, unknown conditional: 0, unknown unconditional: 354] , Statistics on independence cache: Total cache size (in pairs): 108, Positive cache size: 94, Positive conditional cache size: 0, Positive unconditional cache size: 94, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 116]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 109 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.4s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 450 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 401 mSDsluCounter, 129 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 107 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1114 IncrementalHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 22 mSDtfsCounter, 1114 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred in iteration=3, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 216 NumberOfCodeBlocks, 216 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 674 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 02:28:16,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c47d4d5-5b10-4e23-9705-5e060448891d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE