./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i --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_1c7120aa-b85f-4935-8c12-c3fa77024fe9/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7120aa-b85f-4935-8c12-c3fa77024fe9/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_1c7120aa-b85f-4935-8c12-c3fa77024fe9/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7120aa-b85f-4935-8c12-c3fa77024fe9/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7120aa-b85f-4935-8c12-c3fa77024fe9/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_1c7120aa-b85f-4935-8c12-c3fa77024fe9/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 e02ca79ae11b312cb156178ccd52c5da7b51884a938996d16b5a625457869bce --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:26:19,746 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:26:19,816 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7120aa-b85f-4935-8c12-c3fa77024fe9/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:26:19,822 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:26:19,823 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:26:19,849 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:26:19,850 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:26:19,851 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:26:19,852 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:26:19,853 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:26:19,854 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:26:19,855 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:26:19,855 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:26:19,856 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:26:19,857 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:26:19,858 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:26:19,858 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:26:19,859 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:26:19,860 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:26:19,860 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:26:19,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:26:19,862 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:26:19,862 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:26:19,863 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:26:19,863 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:26:19,864 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:26:19,864 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:26:19,865 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:26:19,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:26:19,866 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:26:19,867 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:26:19,867 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:26:19,868 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:26:19,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:26:19,868 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:26:19,869 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:26:19,869 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:26:19,869 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:26:19,869 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:26:19,870 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_1c7120aa-b85f-4935-8c12-c3fa77024fe9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7120aa-b85f-4935-8c12-c3fa77024fe9/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e02ca79ae11b312cb156178ccd52c5da7b51884a938996d16b5a625457869bce [2023-11-12 02:26:20,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:26:20,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:26:20,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:26:20,188 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:26:20,188 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:26:20,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7120aa-b85f-4935-8c12-c3fa77024fe9/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-12 02:26:23,512 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:26:23,946 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:26:23,947 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7120aa-b85f-4935-8c12-c3fa77024fe9/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-12 02:26:23,972 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7120aa-b85f-4935-8c12-c3fa77024fe9/bin/uautomizer-verify-uTZkv6EMXl/data/4d65f3418/683a58ddd75449839088a31d53cf7196/FLAGd4b43de59 [2023-11-12 02:26:23,991 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7120aa-b85f-4935-8c12-c3fa77024fe9/bin/uautomizer-verify-uTZkv6EMXl/data/4d65f3418/683a58ddd75449839088a31d53cf7196 [2023-11-12 02:26:23,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:26:24,000 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:26:24,005 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:26:24,006 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:26:24,011 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:26:24,012 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:26:23" (1/1) ... [2023-11-12 02:26:24,014 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17fe547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:24, skipping insertion in model container [2023-11-12 02:26:24,014 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:26:23" (1/1) ... [2023-11-12 02:26:24,089 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:26:24,304 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_1c7120aa-b85f-4935-8c12-c3fa77024fe9/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-12 02:26:24,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:26:24,591 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:26:24,610 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_1c7120aa-b85f-4935-8c12-c3fa77024fe9/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-12 02:26:24,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:26:24,685 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:26:24,685 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:26:24,694 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:26:24,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:24 WrapperNode [2023-11-12 02:26:24,695 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:26:24,696 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:26:24,696 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:26:24,696 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:26:24,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:24" (1/1) ... [2023-11-12 02:26:24,719 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:24" (1/1) ... [2023-11-12 02:26:24,744 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2023-11-12 02:26:24,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:26:24,745 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:26:24,746 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:26:24,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:26:24,762 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:24" (1/1) ... [2023-11-12 02:26:24,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:24" (1/1) ... [2023-11-12 02:26:24,766 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:24" (1/1) ... [2023-11-12 02:26:24,767 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:24" (1/1) ... [2023-11-12 02:26:24,774 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:24" (1/1) ... [2023-11-12 02:26:24,776 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:24" (1/1) ... [2023-11-12 02:26:24,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:24" (1/1) ... [2023-11-12 02:26:24,780 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:24" (1/1) ... [2023-11-12 02:26:24,784 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:26:24,785 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:26:24,785 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:26:24,785 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:26:24,786 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:24" (1/1) ... [2023-11-12 02:26:24,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:26:24,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7120aa-b85f-4935-8c12-c3fa77024fe9/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:26:24,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7120aa-b85f-4935-8c12-c3fa77024fe9/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:26:24,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7120aa-b85f-4935-8c12-c3fa77024fe9/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:26:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:26:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:26:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:26:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:26:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:26:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:26:24,880 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:26:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:26:24,880 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:26:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:26:24,881 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:26:24,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:26:24,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:26:24,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:26:24,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:26:24,884 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 02:26:25,057 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:26:25,060 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:26:25,242 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:26:25,251 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:26:25,251 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:26:25,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:26:25 BoogieIcfgContainer [2023-11-12 02:26:25,255 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:26:25,258 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:26:25,258 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:26:25,262 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:26:25,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:26:23" (1/3) ... [2023-11-12 02:26:25,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406a24d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:26:25, skipping insertion in model container [2023-11-12 02:26:25,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:24" (2/3) ... [2023-11-12 02:26:25,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406a24d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:26:25, skipping insertion in model container [2023-11-12 02:26:25,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:26:25" (3/3) ... [2023-11-12 02:26:25,266 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-12 02:26:25,276 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:26:25,287 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:26:25,288 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:26:25,288 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:26:25,380 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:26:25,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 184 flow [2023-11-12 02:26:25,479 INFO L124 PetriNetUnfolderBase]: 2/83 cut-off events. [2023-11-12 02:26:25,479 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:26:25,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-11-12 02:26:25,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 86 transitions, 184 flow [2023-11-12 02:26:25,491 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2023-11-12 02:26:25,495 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:26:25,506 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 68 transitions, 145 flow [2023-11-12 02:26:25,509 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 68 transitions, 145 flow [2023-11-12 02:26:25,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 68 transitions, 145 flow [2023-11-12 02:26:25,539 INFO L124 PetriNetUnfolderBase]: 1/68 cut-off events. [2023-11-12 02:26:25,539 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:26:25,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 1/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 35 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-11-12 02:26:25,542 INFO L119 LiptonReduction]: Number of co-enabled transitions 1022 [2023-11-12 02:26:28,030 INFO L134 LiptonReduction]: Checked pairs total: 1774 [2023-11-12 02:26:28,031 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-11-12 02:26:28,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:26:28,070 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;@52185fba, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:26:28,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-12 02:26:28,076 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:26:28,083 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-12 02:26:28,083 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:26:28,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:28,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:28,085 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:26:28,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:28,091 INFO L85 PathProgramCache]: Analyzing trace with hash -389927709, now seen corresponding path program 1 times [2023-11-12 02:26:28,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:28,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623603059] [2023-11-12 02:26:28,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:28,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:28,709 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 02:26:28,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:28,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623603059] [2023-11-12 02:26:28,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623603059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:28,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:28,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:26:28,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941227715] [2023-11-12 02:26:28,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:28,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:26:28,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:28,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:26:28,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:28,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 144 [2023-11-12 02:26:28,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 02:26:28,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:28,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 144 [2023-11-12 02:26:28,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:28,985 INFO L124 PetriNetUnfolderBase]: 283/491 cut-off events. [2023-11-12 02:26:28,985 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-12 02:26:28,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 491 events. 283/491 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2207 event pairs, 113 based on Foata normal form. 19/510 useless extension candidates. Maximal degree in co-relation 1002. Up to 335 conditions per place. [2023-11-12 02:26:29,001 INFO L140 encePairwiseOnDemand]: 137/144 looper letters, 21 selfloop transitions, 5 changer transitions 0/27 dead transitions. [2023-11-12 02:26:29,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 121 flow [2023-11-12 02:26:29,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:26:29,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:26:29,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-11-12 02:26:29,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2023-11-12 02:26:29,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-11-12 02:26:29,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-11-12 02:26:29,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:29,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-11-12 02:26:29,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 02:26:29,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 02:26:29,058 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 02:26:29,061 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 43 flow. Second operand 3 states and 248 transitions. [2023-11-12 02:26:29,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 121 flow [2023-11-12 02:26:29,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 116 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:26:29,068 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 67 flow [2023-11-12 02:26:29,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2023-11-12 02:26:29,076 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-11-12 02:26:29,076 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 67 flow [2023-11-12 02:26:29,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 02:26:29,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:29,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:29,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:26:29,078 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:26:29,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:29,079 INFO L85 PathProgramCache]: Analyzing trace with hash 797142326, now seen corresponding path program 1 times [2023-11-12 02:26:29,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:29,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953591663] [2023-11-12 02:26:29,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:29,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:29,449 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 02:26:29,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:29,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953591663] [2023-11-12 02:26:29,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953591663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:29,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:29,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:26:29,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257108755] [2023-11-12 02:26:29,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:29,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:26:29,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:29,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:26:29,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:26:29,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 144 [2023-11-12 02:26:29,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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 02:26:29,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:29,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 144 [2023-11-12 02:26:29,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:29,630 INFO L124 PetriNetUnfolderBase]: 265/460 cut-off events. [2023-11-12 02:26:29,631 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-11-12 02:26:29,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1190 conditions, 460 events. 265/460 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2072 event pairs, 38 based on Foata normal form. 8/467 useless extension candidates. Maximal degree in co-relation 1179. Up to 261 conditions per place. [2023-11-12 02:26:29,640 INFO L140 encePairwiseOnDemand]: 138/144 looper letters, 27 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2023-11-12 02:26:29,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 34 transitions, 177 flow [2023-11-12 02:26:29,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:26:29,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:26:29,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 323 transitions. [2023-11-12 02:26:29,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5607638888888888 [2023-11-12 02:26:29,649 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 323 transitions. [2023-11-12 02:26:29,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 323 transitions. [2023-11-12 02:26:29,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:29,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 323 transitions. [2023-11-12 02:26:29,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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 02:26:29,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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 02:26:29,665 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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 02:26:29,666 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 67 flow. Second operand 4 states and 323 transitions. [2023-11-12 02:26:29,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 34 transitions, 177 flow [2023-11-12 02:26:29,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 34 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:26:29,673 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 94 flow [2023-11-12 02:26:29,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2023-11-12 02:26:29,675 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-11-12 02:26:29,682 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 94 flow [2023-11-12 02:26:29,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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 02:26:29,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:29,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:29,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:26:29,684 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:26:29,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:29,685 INFO L85 PathProgramCache]: Analyzing trace with hash 797142295, now seen corresponding path program 1 times [2023-11-12 02:26:29,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:29,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032350730] [2023-11-12 02:26:29,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:29,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:29,925 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 02:26:29,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:29,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032350730] [2023-11-12 02:26:29,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032350730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:29,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:29,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:26:29,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567219412] [2023-11-12 02:26:29,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:29,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:26:29,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:29,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:26:29,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:26:29,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 144 [2023-11-12 02:26:29,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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 02:26:29,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:29,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 144 [2023-11-12 02:26:29,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:30,130 INFO L124 PetriNetUnfolderBase]: 426/702 cut-off events. [2023-11-12 02:26:30,130 INFO L125 PetriNetUnfolderBase]: For 606/606 co-relation queries the response was YES. [2023-11-12 02:26:30,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1989 conditions, 702 events. 426/702 cut-off events. For 606/606 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3073 event pairs, 41 based on Foata normal form. 12/714 useless extension candidates. Maximal degree in co-relation 1975. Up to 247 conditions per place. [2023-11-12 02:26:30,139 INFO L140 encePairwiseOnDemand]: 137/144 looper letters, 38 selfloop transitions, 14 changer transitions 0/52 dead transitions. [2023-11-12 02:26:30,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 52 transitions, 307 flow [2023-11-12 02:26:30,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:26:30,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:26:30,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 404 transitions. [2023-11-12 02:26:30,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611111111111111 [2023-11-12 02:26:30,143 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 404 transitions. [2023-11-12 02:26:30,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 404 transitions. [2023-11-12 02:26:30,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:30,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 404 transitions. [2023-11-12 02:26:30,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 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 02:26:30,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 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 02:26:30,149 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 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 02:26:30,149 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 94 flow. Second operand 5 states and 404 transitions. [2023-11-12 02:26:30,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 52 transitions, 307 flow [2023-11-12 02:26:30,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 52 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:26:30,157 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 194 flow [2023-11-12 02:26:30,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=194, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2023-11-12 02:26:30,160 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-11-12 02:26:30,165 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 194 flow [2023-11-12 02:26:30,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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 02:26:30,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:30,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:30,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:26:30,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:26:30,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:30,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1724769834, now seen corresponding path program 1 times [2023-11-12 02:26:30,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:30,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991918149] [2023-11-12 02:26:30,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:30,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:30,337 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 02:26:30,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:30,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991918149] [2023-11-12 02:26:30,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991918149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:30,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:30,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:26:30,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594806806] [2023-11-12 02:26:30,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:30,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:26:30,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:30,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:26:30,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:26:30,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 144 [2023-11-12 02:26:30,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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 02:26:30,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:30,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 144 [2023-11-12 02:26:30,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:30,504 INFO L124 PetriNetUnfolderBase]: 406/714 cut-off events. [2023-11-12 02:26:30,504 INFO L125 PetriNetUnfolderBase]: For 1347/1360 co-relation queries the response was YES. [2023-11-12 02:26:30,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2384 conditions, 714 events. 406/714 cut-off events. For 1347/1360 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3477 event pairs, 102 based on Foata normal form. 32/744 useless extension candidates. Maximal degree in co-relation 2366. Up to 317 conditions per place. [2023-11-12 02:26:30,510 INFO L140 encePairwiseOnDemand]: 139/144 looper letters, 27 selfloop transitions, 7 changer transitions 15/51 dead transitions. [2023-11-12 02:26:30,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 51 transitions, 424 flow [2023-11-12 02:26:30,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:26:30,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:26:30,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 334 transitions. [2023-11-12 02:26:30,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5798611111111112 [2023-11-12 02:26:30,513 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 334 transitions. [2023-11-12 02:26:30,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 334 transitions. [2023-11-12 02:26:30,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:30,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 334 transitions. [2023-11-12 02:26:30,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 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 02:26:30,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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 02:26:30,519 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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 02:26:30,519 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 194 flow. Second operand 4 states and 334 transitions. [2023-11-12 02:26:30,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 51 transitions, 424 flow [2023-11-12 02:26:30,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 51 transitions, 424 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:26:30,531 INFO L231 Difference]: Finished difference. Result has 41 places, 27 transitions, 212 flow [2023-11-12 02:26:30,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=41, PETRI_TRANSITIONS=27} [2023-11-12 02:26:30,534 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-11-12 02:26:30,534 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 212 flow [2023-11-12 02:26:30,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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 02:26:30,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:30,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:30,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:26:30,535 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:26:30,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:30,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1931270516, now seen corresponding path program 1 times [2023-11-12 02:26:30,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:30,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641788763] [2023-11-12 02:26:30,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:30,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:30,679 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 02:26:30,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:30,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641788763] [2023-11-12 02:26:30,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641788763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:30,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:30,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:26:30,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428179085] [2023-11-12 02:26:30,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:30,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:26:30,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:30,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:26:30,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:26:30,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 144 [2023-11-12 02:26:30,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 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 02:26:30,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:30,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 144 [2023-11-12 02:26:30,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:30,822 INFO L124 PetriNetUnfolderBase]: 263/454 cut-off events. [2023-11-12 02:26:30,823 INFO L125 PetriNetUnfolderBase]: For 1422/1422 co-relation queries the response was YES. [2023-11-12 02:26:30,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1618 conditions, 454 events. 263/454 cut-off events. For 1422/1422 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1770 event pairs, 75 based on Foata normal form. 24/478 useless extension candidates. Maximal degree in co-relation 1596. Up to 188 conditions per place. [2023-11-12 02:26:30,826 INFO L140 encePairwiseOnDemand]: 139/144 looper letters, 19 selfloop transitions, 4 changer transitions 19/42 dead transitions. [2023-11-12 02:26:30,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 356 flow [2023-11-12 02:26:30,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:26:30,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:26:30,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 389 transitions. [2023-11-12 02:26:30,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5402777777777777 [2023-11-12 02:26:30,830 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 389 transitions. [2023-11-12 02:26:30,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 389 transitions. [2023-11-12 02:26:30,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:30,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 389 transitions. [2023-11-12 02:26:30,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 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 02:26:30,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 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 02:26:30,836 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 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 02:26:30,836 INFO L175 Difference]: Start difference. First operand has 41 places, 27 transitions, 212 flow. Second operand 5 states and 389 transitions. [2023-11-12 02:26:30,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 356 flow [2023-11-12 02:26:30,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 330 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-12 02:26:30,842 INFO L231 Difference]: Finished difference. Result has 44 places, 16 transitions, 107 flow [2023-11-12 02:26:30,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=44, PETRI_TRANSITIONS=16} [2023-11-12 02:26:30,844 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2023-11-12 02:26:30,844 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 16 transitions, 107 flow [2023-11-12 02:26:30,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 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 02:26:30,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:30,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:30,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:26:30,845 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:26:30,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:30,846 INFO L85 PathProgramCache]: Analyzing trace with hash 770065661, now seen corresponding path program 1 times [2023-11-12 02:26:30,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:30,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414112215] [2023-11-12 02:26:30,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:30,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:30,957 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 02:26:30,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:30,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414112215] [2023-11-12 02:26:30,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414112215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:30,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:30,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:26:30,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478714987] [2023-11-12 02:26:30,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:30,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:26:30,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:30,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:26:30,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:30,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 144 [2023-11-12 02:26:30,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 16 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 02:26:30,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:30,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 144 [2023-11-12 02:26:30,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:31,007 INFO L124 PetriNetUnfolderBase]: 29/77 cut-off events. [2023-11-12 02:26:31,007 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2023-11-12 02:26:31,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 77 events. 29/77 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 204 event pairs, 13 based on Foata normal form. 4/81 useless extension candidates. Maximal degree in co-relation 280. Up to 58 conditions per place. [2023-11-12 02:26:31,009 INFO L140 encePairwiseOnDemand]: 139/144 looper letters, 15 selfloop transitions, 3 changer transitions 1/21 dead transitions. [2023-11-12 02:26:31,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 21 transitions, 168 flow [2023-11-12 02:26:31,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:26:31,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:26:31,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-11-12 02:26:31,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2023-11-12 02:26:31,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-11-12 02:26:31,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-11-12 02:26:31,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:31,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-11-12 02:26:31,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 02:26:31,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 02:26:31,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 02:26:31,015 INFO L175 Difference]: Start difference. First operand has 44 places, 16 transitions, 107 flow. Second operand 3 states and 248 transitions. [2023-11-12 02:26:31,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 21 transitions, 168 flow [2023-11-12 02:26:31,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 21 transitions, 99 flow, removed 15 selfloop flow, removed 16 redundant places. [2023-11-12 02:26:31,017 INFO L231 Difference]: Finished difference. Result has 31 places, 18 transitions, 71 flow [2023-11-12 02:26:31,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=18} [2023-11-12 02:26:31,019 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2023-11-12 02:26:31,019 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 18 transitions, 71 flow [2023-11-12 02:26:31,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 02:26:31,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:31,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:31,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:26:31,020 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:26:31,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:31,021 INFO L85 PathProgramCache]: Analyzing trace with hash 173544559, now seen corresponding path program 1 times [2023-11-12 02:26:31,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:31,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126333264] [2023-11-12 02:26:31,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:31,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:31,175 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 02:26:31,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:31,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126333264] [2023-11-12 02:26:31,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126333264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:31,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:31,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:26:31,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880007280] [2023-11-12 02:26:31,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:31,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:26:31,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:31,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:26:31,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:26:31,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 144 [2023-11-12 02:26:31,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 18 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:31,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:31,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 144 [2023-11-12 02:26:31,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:31,228 INFO L124 PetriNetUnfolderBase]: 12/41 cut-off events. [2023-11-12 02:26:31,228 INFO L125 PetriNetUnfolderBase]: For 9/15 co-relation queries the response was YES. [2023-11-12 02:26:31,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 41 events. 12/41 cut-off events. For 9/15 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 1 based on Foata normal form. 8/48 useless extension candidates. Maximal degree in co-relation 122. Up to 24 conditions per place. [2023-11-12 02:26:31,229 INFO L140 encePairwiseOnDemand]: 139/144 looper letters, 14 selfloop transitions, 5 changer transitions 3/24 dead transitions. [2023-11-12 02:26:31,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 24 transitions, 135 flow [2023-11-12 02:26:31,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:26:31,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:26:31,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 327 transitions. [2023-11-12 02:26:31,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677083333333334 [2023-11-12 02:26:31,232 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 327 transitions. [2023-11-12 02:26:31,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 327 transitions. [2023-11-12 02:26:31,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:31,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 327 transitions. [2023-11-12 02:26:31,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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 02:26:31,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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 02:26:31,236 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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 02:26:31,237 INFO L175 Difference]: Start difference. First operand has 31 places, 18 transitions, 71 flow. Second operand 4 states and 327 transitions. [2023-11-12 02:26:31,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 24 transitions, 135 flow [2023-11-12 02:26:31,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 24 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:26:31,238 INFO L231 Difference]: Finished difference. Result has 34 places, 18 transitions, 86 flow [2023-11-12 02:26:31,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=34, PETRI_TRANSITIONS=18} [2023-11-12 02:26:31,239 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-11-12 02:26:31,240 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 18 transitions, 86 flow [2023-11-12 02:26:31,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:31,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:31,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:31,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:26:31,241 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:26:31,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:31,242 INFO L85 PathProgramCache]: Analyzing trace with hash -362595125, now seen corresponding path program 1 times [2023-11-12 02:26:31,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:31,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986795430] [2023-11-12 02:26:31,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:31,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:31,356 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 02:26:31,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:31,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986795430] [2023-11-12 02:26:31,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986795430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:31,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:31,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:26:31,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484166631] [2023-11-12 02:26:31,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:31,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:26:31,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:31,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:26:31,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:26:31,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 144 [2023-11-12 02:26:31,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 18 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 78.6) internal successors, (393), 5 states have internal predecessors, (393), 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 02:26:31,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:31,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 144 [2023-11-12 02:26:31,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:31,407 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2023-11-12 02:26:31,408 INFO L125 PetriNetUnfolderBase]: For 32/40 co-relation queries the response was YES. [2023-11-12 02:26:31,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 26 events. 6/26 cut-off events. For 32/40 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 29 event pairs, 0 based on Foata normal form. 6/32 useless extension candidates. Maximal degree in co-relation 85. Up to 12 conditions per place. [2023-11-12 02:26:31,408 INFO L140 encePairwiseOnDemand]: 139/144 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-11-12 02:26:31,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 20 transitions, 124 flow [2023-11-12 02:26:31,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:26:31,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:26:31,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 399 transitions. [2023-11-12 02:26:31,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5541666666666667 [2023-11-12 02:26:31,411 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 399 transitions. [2023-11-12 02:26:31,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 399 transitions. [2023-11-12 02:26:31,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:31,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 399 transitions. [2023-11-12 02:26:31,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 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 02:26:31,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 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 02:26:31,416 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 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 02:26:31,416 INFO L175 Difference]: Start difference. First operand has 34 places, 18 transitions, 86 flow. Second operand 5 states and 399 transitions. [2023-11-12 02:26:31,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 20 transitions, 124 flow [2023-11-12 02:26:31,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 20 transitions, 107 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-12 02:26:31,418 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2023-11-12 02:26:31,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2023-11-12 02:26:31,421 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-11-12 02:26:31,422 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2023-11-12 02:26:31,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.6) internal successors, (393), 5 states have internal predecessors, (393), 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 02:26:31,425 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-12 02:26:31,426 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-12 02:26:31,426 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-12 02:26:31,426 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-12 02:26:31,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:26:31,429 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:31,434 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:26:31,434 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:26:31,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:26:31 BasicIcfg [2023-11-12 02:26:31,449 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:26:31,449 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:26:31,449 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:26:31,450 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:26:31,451 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:26:25" (3/4) ... [2023-11-12 02:26:31,453 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:26:31,458 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-12 02:26:31,458 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-12 02:26:31,458 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-12 02:26:31,466 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-12 02:26:31,467 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-12 02:26:31,467 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:26:31,467 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 02:26:31,557 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7120aa-b85f-4935-8c12-c3fa77024fe9/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:26:31,558 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7120aa-b85f-4935-8c12-c3fa77024fe9/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:26:31,558 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:26:31,559 INFO L158 Benchmark]: Toolchain (without parser) took 7558.29ms. Allocated memory was 186.6MB in the beginning and 232.8MB in the end (delta: 46.1MB). Free memory was 153.8MB in the beginning and 133.1MB in the end (delta: 20.7MB). Peak memory consumption was 68.3MB. Max. memory is 16.1GB. [2023-11-12 02:26:31,559 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 125.8MB. Free memory is still 84.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:26:31,560 INFO L158 Benchmark]: CACSL2BoogieTranslator took 689.62ms. Allocated memory is still 186.6MB. Free memory was 153.8MB in the beginning and 133.5MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-12 02:26:31,560 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.10ms. Allocated memory is still 186.6MB. Free memory was 133.5MB in the beginning and 131.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:26:31,560 INFO L158 Benchmark]: Boogie Preprocessor took 38.54ms. Allocated memory is still 186.6MB. Free memory was 131.3MB in the beginning and 129.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:26:31,561 INFO L158 Benchmark]: RCFGBuilder took 470.40ms. Allocated memory is still 186.6MB. Free memory was 129.7MB in the beginning and 116.2MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 02:26:31,561 INFO L158 Benchmark]: TraceAbstraction took 6190.64ms. Allocated memory was 186.6MB in the beginning and 232.8MB in the end (delta: 46.1MB). Free memory was 115.8MB in the beginning and 137.3MB in the end (delta: -21.5MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2023-11-12 02:26:31,562 INFO L158 Benchmark]: Witness Printer took 108.67ms. Allocated memory is still 232.8MB. Free memory was 137.3MB in the beginning and 133.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:26:31,564 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 125.8MB. Free memory is still 84.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 689.62ms. Allocated memory is still 186.6MB. Free memory was 153.8MB in the beginning and 133.5MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.10ms. Allocated memory is still 186.6MB. Free memory was 133.5MB in the beginning and 131.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.54ms. Allocated memory is still 186.6MB. Free memory was 131.3MB in the beginning and 129.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 470.40ms. Allocated memory is still 186.6MB. Free memory was 129.7MB in the beginning and 116.2MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6190.64ms. Allocated memory was 186.6MB in the beginning and 232.8MB in the end (delta: 46.1MB). Free memory was 115.8MB in the beginning and 137.3MB in the end (delta: -21.5MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. * Witness Printer took 108.67ms. Allocated memory is still 232.8MB. Free memory was 137.3MB in the beginning and 133.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 77 PlacesBefore, 26 PlacesAfterwards, 68 TransitionsBefore, 17 TransitionsAfterwards, 1022 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 58 TotalNumberOfCompositions, 1774 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1103, independent: 1036, independent conditional: 0, independent unconditional: 1036, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 593, independent: 572, independent conditional: 0, independent unconditional: 572, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1103, independent: 464, independent conditional: 0, independent unconditional: 464, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 593, unknown conditional: 0, unknown unconditional: 593] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 42, Positive conditional cache size: 0, Positive unconditional cache size: 42, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 189 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 333 IncrementalHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 37 mSDtfsCounter, 333 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=212occurred in iteration=4, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 316 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 02:26:31,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7120aa-b85f-4935-8c12-c3fa77024fe9/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