./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe003_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0341549-4e06-47e1-8c87-c94d596a153f/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0341549-4e06-47e1-8c87-c94d596a153f/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0341549-4e06-47e1-8c87-c94d596a153f/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0341549-4e06-47e1-8c87-c94d596a153f/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe003_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0341549-4e06-47e1-8c87-c94d596a153f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0341549-4e06-47e1-8c87-c94d596a153f/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --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 cc60b32bd5539dadbcbe1bdf86f21665a573ec180c72ba491085256c00923963 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:26:02,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:26:02,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:26:02,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:26:02,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:26:02,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:26:02,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:26:02,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:26:02,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:26:02,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:26:02,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:26:02,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:26:02,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:26:02,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:26:02,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:26:02,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:26:02,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:26:02,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:26:02,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:26:02,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:26:02,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:26:02,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:26:02,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:26:02,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:26:02,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:26:02,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:26:02,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:26:02,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:26:02,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:26:02,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:26:02,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:26:02,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:26:02,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:26:02,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:26:02,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:26:02,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:26:02,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:26:02,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:26:02,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:26:02,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:26:02,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:26:02,681 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0341549-4e06-47e1-8c87-c94d596a153f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:26:02,706 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:26:02,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:26:02,707 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:26:02,707 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:26:02,708 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:26:02,709 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:26:02,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:26:02,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:26:02,710 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:26:02,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:26:02,711 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:26:02,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:26:02,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:26:02,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:26:02,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:26:02,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:26:02,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:26:02,712 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:26:02,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:26:02,713 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:26:02,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:26:02,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:26:02,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:26:02,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:26:02,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:26:02,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:26:02,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:26:02,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:26:02,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:26:02,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:26:02,716 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:26:02,716 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:26:02,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:26:02,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b0341549-4e06-47e1-8c87-c94d596a153f/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0341549-4e06-47e1-8c87-c94d596a153f/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc60b32bd5539dadbcbe1bdf86f21665a573ec180c72ba491085256c00923963 [2022-11-18 20:26:03,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:26:03,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:26:03,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:26:03,182 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:26:03,183 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:26:03,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0341549-4e06-47e1-8c87-c94d596a153f/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-wmm/safe003_tso.i [2022-11-18 20:26:03,276 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0341549-4e06-47e1-8c87-c94d596a153f/bin/uautomizer-TMbwUNV5ro/data/401f0a116/40e23e52671541a39607678022e03feb/FLAG2f3e5b018 [2022-11-18 20:26:04,013 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:26:04,014 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0341549-4e06-47e1-8c87-c94d596a153f/sv-benchmarks/c/pthread-wmm/safe003_tso.i [2022-11-18 20:26:04,034 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0341549-4e06-47e1-8c87-c94d596a153f/bin/uautomizer-TMbwUNV5ro/data/401f0a116/40e23e52671541a39607678022e03feb/FLAG2f3e5b018 [2022-11-18 20:26:04,280 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0341549-4e06-47e1-8c87-c94d596a153f/bin/uautomizer-TMbwUNV5ro/data/401f0a116/40e23e52671541a39607678022e03feb [2022-11-18 20:26:04,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:26:04,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:26:04,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:26:04,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:26:04,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:26:04,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:26:04" (1/1) ... [2022-11-18 20:26:04,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ed21e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:04, skipping insertion in model container [2022-11-18 20:26:04,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:26:04" (1/1) ... [2022-11-18 20:26:04,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:26:04,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:26:04,598 WARN L234 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_b0341549-4e06-47e1-8c87-c94d596a153f/sv-benchmarks/c/pthread-wmm/safe003_tso.i[945,958] [2022-11-18 20:26:04,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:26:04,760 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:26:04,780 WARN L234 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_b0341549-4e06-47e1-8c87-c94d596a153f/sv-benchmarks/c/pthread-wmm/safe003_tso.i[945,958] [2022-11-18 20:26:04,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:26:04,881 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:26:04,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:04 WrapperNode [2022-11-18 20:26:04,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:26:04,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:26:04,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:26:04,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:26:04,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:04" (1/1) ... [2022-11-18 20:26:04,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:04" (1/1) ... [2022-11-18 20:26:04,968 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-11-18 20:26:04,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:26:04,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:26:04,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:26:04,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:26:04,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:04" (1/1) ... [2022-11-18 20:26:04,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:04" (1/1) ... [2022-11-18 20:26:04,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:04" (1/1) ... [2022-11-18 20:26:04,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:04" (1/1) ... [2022-11-18 20:26:05,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:04" (1/1) ... [2022-11-18 20:26:05,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:04" (1/1) ... [2022-11-18 20:26:05,015 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:04" (1/1) ... [2022-11-18 20:26:05,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:04" (1/1) ... [2022-11-18 20:26:05,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:26:05,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:26:05,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:26:05,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:26:05,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:04" (1/1) ... [2022-11-18 20:26:05,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:26:05,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0341549-4e06-47e1-8c87-c94d596a153f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:26:05,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0341549-4e06-47e1-8c87-c94d596a153f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:26:05,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0341549-4e06-47e1-8c87-c94d596a153f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:26:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:26:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:26:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:26:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:26:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:26:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-18 20:26:05,110 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-18 20:26:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-18 20:26:05,111 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-18 20:26:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-18 20:26:05,111 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-18 20:26:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:26:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:26:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:26:05,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:26:05,114 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:26:05,364 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:26:05,366 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:26:05,624 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:26:05,631 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:26:05,634 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:26:05,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:26:05 BoogieIcfgContainer [2022-11-18 20:26:05,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:26:05,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:26:05,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:26:05,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:26:05,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:26:04" (1/3) ... [2022-11-18 20:26:05,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0da05b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:26:05, skipping insertion in model container [2022-11-18 20:26:05,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:04" (2/3) ... [2022-11-18 20:26:05,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0da05b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:26:05, skipping insertion in model container [2022-11-18 20:26:05,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:26:05" (3/3) ... [2022-11-18 20:26:05,657 INFO L112 eAbstractionObserver]: Analyzing ICFG safe003_tso.i [2022-11-18 20:26:05,667 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:26:05,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:26:05,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:26:05,679 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:26:05,792 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:26:05,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-11-18 20:26:05,935 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-11-18 20:26:05,936 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:26:05,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-18 20:26:05,942 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-11-18 20:26:05,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-11-18 20:26:05,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:26:05,979 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=LoopsAndPotentialCycles, 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;@76330bbf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:26:05,980 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-18 20:26:06,021 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2022-11-18 20:26:06,021 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:26:06,021 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:06,022 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:26:06,023 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)] === [2022-11-18 20:26:06,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:06,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1669751259, now seen corresponding path program 1 times [2022-11-18 20:26:06,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:06,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865078404] [2022-11-18 20:26:06,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:06,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:07,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:07,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:07,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865078404] [2022-11-18 20:26:07,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865078404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:07,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:07,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:26:07,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558943601] [2022-11-18 20:26:07,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:07,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:26:07,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:07,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:26:07,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:26:07,320 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-11-18 20:26:07,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2022-11-18 20:26:07,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:07,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-11-18 20:26:07,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:07,865 INFO L130 PetriNetUnfolder]: 378/982 cut-off events. [2022-11-18 20:26:07,865 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-18 20:26:07,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1654 conditions, 982 events. 378/982 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5957 event pairs, 38 based on Foata normal form. 33/988 useless extension candidates. Maximal degree in co-relation 1616. Up to 212 conditions per place. [2022-11-18 20:26:07,888 INFO L137 encePairwiseOnDemand]: 81/92 looper letters, 23 selfloop transitions, 6 changer transitions 37/122 dead transitions. [2022-11-18 20:26:07,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 122 transitions, 391 flow [2022-11-18 20:26:07,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:26:07,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:26:07,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 700 transitions. [2022-11-18 20:26:07,906 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8454106280193237 [2022-11-18 20:26:07,907 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 700 transitions. [2022-11-18 20:26:07,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 700 transitions. [2022-11-18 20:26:07,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:07,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 700 transitions. [2022-11-18 20:26:07,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.77777777777777) internal successors, (700), 9 states have internal predecessors, (700), 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) [2022-11-18 20:26:07,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2022-11-18 20:26:07,928 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2022-11-18 20:26:07,930 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 9 states and 700 transitions. [2022-11-18 20:26:07,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 122 transitions, 391 flow [2022-11-18 20:26:07,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 122 transitions, 386 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:26:07,938 INFO L231 Difference]: Finished difference. Result has 97 places, 79 transitions, 242 flow [2022-11-18 20:26:07,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=242, PETRI_PLACES=97, PETRI_TRANSITIONS=79} [2022-11-18 20:26:07,944 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 13 predicate places. [2022-11-18 20:26:07,944 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 79 transitions, 242 flow [2022-11-18 20:26:07,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2022-11-18 20:26:07,945 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:07,945 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:26:07,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:26:07,946 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)] === [2022-11-18 20:26:07,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:07,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1276190756, now seen corresponding path program 1 times [2022-11-18 20:26:07,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:07,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189304115] [2022-11-18 20:26:07,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:07,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:08,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:08,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:08,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189304115] [2022-11-18 20:26:08,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189304115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:08,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:08,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:26:08,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262257915] [2022-11-18 20:26:08,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:08,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:26:08,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:08,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:26:08,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:26:08,272 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-11-18 20:26:08,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 79 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 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) [2022-11-18 20:26:08,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:08,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-11-18 20:26:08,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:08,657 INFO L130 PetriNetUnfolder]: 177/583 cut-off events. [2022-11-18 20:26:08,657 INFO L131 PetriNetUnfolder]: For 975/1287 co-relation queries the response was YES. [2022-11-18 20:26:08,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1707 conditions, 583 events. 177/583 cut-off events. For 975/1287 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3147 event pairs, 10 based on Foata normal form. 23/588 useless extension candidates. Maximal degree in co-relation 1662. Up to 136 conditions per place. [2022-11-18 20:26:08,662 INFO L137 encePairwiseOnDemand]: 83/92 looper letters, 25 selfloop transitions, 6 changer transitions 54/141 dead transitions. [2022-11-18 20:26:08,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 141 transitions, 850 flow [2022-11-18 20:26:08,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:26:08,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:26:08,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 978 transitions. [2022-11-18 20:26:08,666 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8177257525083612 [2022-11-18 20:26:08,666 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 978 transitions. [2022-11-18 20:26:08,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 978 transitions. [2022-11-18 20:26:08,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:08,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 978 transitions. [2022-11-18 20:26:08,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.23076923076923) internal successors, (978), 13 states have internal predecessors, (978), 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) [2022-11-18 20:26:08,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-11-18 20:26:08,682 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-11-18 20:26:08,682 INFO L175 Difference]: Start difference. First operand has 97 places, 79 transitions, 242 flow. Second operand 13 states and 978 transitions. [2022-11-18 20:26:08,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 141 transitions, 850 flow [2022-11-18 20:26:08,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 141 transitions, 776 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-11-18 20:26:08,699 INFO L231 Difference]: Finished difference. Result has 113 places, 82 transitions, 308 flow [2022-11-18 20:26:08,699 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=308, PETRI_PLACES=113, PETRI_TRANSITIONS=82} [2022-11-18 20:26:08,700 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 29 predicate places. [2022-11-18 20:26:08,700 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 82 transitions, 308 flow [2022-11-18 20:26:08,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 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) [2022-11-18 20:26:08,701 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:08,701 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:26:08,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:26:08,702 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)] === [2022-11-18 20:26:08,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:08,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1455647721, now seen corresponding path program 1 times [2022-11-18 20:26:08,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:08,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586860249] [2022-11-18 20:26:08,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:08,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:08,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:08,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586860249] [2022-11-18 20:26:08,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586860249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:08,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:08,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:26:08,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657009843] [2022-11-18 20:26:08,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:08,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:26:08,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:08,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:26:08,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:26:08,979 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 92 [2022-11-18 20:26:08,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 82 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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) [2022-11-18 20:26:08,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:08,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 92 [2022-11-18 20:26:08,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:09,166 INFO L130 PetriNetUnfolder]: 30/222 cut-off events. [2022-11-18 20:26:09,166 INFO L131 PetriNetUnfolder]: For 569/644 co-relation queries the response was YES. [2022-11-18 20:26:09,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 222 events. 30/222 cut-off events. For 569/644 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 836 event pairs, 0 based on Foata normal form. 22/238 useless extension candidates. Maximal degree in co-relation 557. Up to 35 conditions per place. [2022-11-18 20:26:09,169 INFO L137 encePairwiseOnDemand]: 86/92 looper letters, 10 selfloop transitions, 4 changer transitions 10/93 dead transitions. [2022-11-18 20:26:09,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 93 transitions, 448 flow [2022-11-18 20:26:09,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:26:09,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:26:09,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 717 transitions. [2022-11-18 20:26:09,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8659420289855072 [2022-11-18 20:26:09,173 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 717 transitions. [2022-11-18 20:26:09,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 717 transitions. [2022-11-18 20:26:09,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:09,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 717 transitions. [2022-11-18 20:26:09,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.66666666666667) internal successors, (717), 9 states have internal predecessors, (717), 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) [2022-11-18 20:26:09,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2022-11-18 20:26:09,179 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2022-11-18 20:26:09,180 INFO L175 Difference]: Start difference. First operand has 113 places, 82 transitions, 308 flow. Second operand 9 states and 717 transitions. [2022-11-18 20:26:09,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 93 transitions, 448 flow [2022-11-18 20:26:09,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 93 transitions, 377 flow, removed 34 selfloop flow, removed 4 redundant places. [2022-11-18 20:26:09,186 INFO L231 Difference]: Finished difference. Result has 115 places, 82 transitions, 301 flow [2022-11-18 20:26:09,187 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=301, PETRI_PLACES=115, PETRI_TRANSITIONS=82} [2022-11-18 20:26:09,188 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 31 predicate places. [2022-11-18 20:26:09,188 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 82 transitions, 301 flow [2022-11-18 20:26:09,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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) [2022-11-18 20:26:09,189 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:09,189 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:26:09,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:26:09,189 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)] === [2022-11-18 20:26:09,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:09,190 INFO L85 PathProgramCache]: Analyzing trace with hash -701895511, now seen corresponding path program 1 times [2022-11-18 20:26:09,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:09,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221447195] [2022-11-18 20:26:09,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:09,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:09,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:09,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:09,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221447195] [2022-11-18 20:26:09,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221447195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:09,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:09,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:26:09,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815872981] [2022-11-18 20:26:09,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:09,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:26:09,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:09,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:26:09,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:26:09,463 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 92 [2022-11-18 20:26:09,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 82 transitions, 301 flow. Second operand has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 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) [2022-11-18 20:26:09,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:09,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 92 [2022-11-18 20:26:09,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:09,927 INFO L130 PetriNetUnfolder]: 125/509 cut-off events. [2022-11-18 20:26:09,928 INFO L131 PetriNetUnfolder]: For 1043/1544 co-relation queries the response was YES. [2022-11-18 20:26:09,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 509 events. 125/509 cut-off events. For 1043/1544 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2719 event pairs, 3 based on Foata normal form. 11/507 useless extension candidates. Maximal degree in co-relation 1391. Up to 88 conditions per place. [2022-11-18 20:26:09,933 INFO L137 encePairwiseOnDemand]: 80/92 looper letters, 40 selfloop transitions, 14 changer transitions 49/157 dead transitions. [2022-11-18 20:26:09,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 157 transitions, 1022 flow [2022-11-18 20:26:09,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:26:09,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 20:26:09,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1246 transitions. [2022-11-18 20:26:09,937 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7966751918158568 [2022-11-18 20:26:09,938 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1246 transitions. [2022-11-18 20:26:09,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1246 transitions. [2022-11-18 20:26:09,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:09,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1246 transitions. [2022-11-18 20:26:09,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 73.29411764705883) internal successors, (1246), 17 states have internal predecessors, (1246), 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) [2022-11-18 20:26:09,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 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) [2022-11-18 20:26:09,953 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 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) [2022-11-18 20:26:09,953 INFO L175 Difference]: Start difference. First operand has 115 places, 82 transitions, 301 flow. Second operand 17 states and 1246 transitions. [2022-11-18 20:26:09,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 157 transitions, 1022 flow [2022-11-18 20:26:09,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 157 transitions, 846 flow, removed 81 selfloop flow, removed 17 redundant places. [2022-11-18 20:26:09,963 INFO L231 Difference]: Finished difference. Result has 124 places, 90 transitions, 394 flow [2022-11-18 20:26:09,963 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=394, PETRI_PLACES=124, PETRI_TRANSITIONS=90} [2022-11-18 20:26:09,966 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 40 predicate places. [2022-11-18 20:26:09,966 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 90 transitions, 394 flow [2022-11-18 20:26:09,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 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) [2022-11-18 20:26:09,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:09,967 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:26:09,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:26:09,968 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)] === [2022-11-18 20:26:09,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:09,969 INFO L85 PathProgramCache]: Analyzing trace with hash 2059493144, now seen corresponding path program 1 times [2022-11-18 20:26:09,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:09,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916138317] [2022-11-18 20:26:09,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:09,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:10,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:10,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:10,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916138317] [2022-11-18 20:26:10,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916138317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:10,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:10,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:26:10,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589829217] [2022-11-18 20:26:10,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:10,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:26:10,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:10,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:26:10,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:26:10,257 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 92 [2022-11-18 20:26:10,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 90 transitions, 394 flow. Second operand has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2022-11-18 20:26:10,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:10,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 92 [2022-11-18 20:26:10,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:10,439 INFO L130 PetriNetUnfolder]: 47/330 cut-off events. [2022-11-18 20:26:10,440 INFO L131 PetriNetUnfolder]: For 930/2468 co-relation queries the response was YES. [2022-11-18 20:26:10,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 330 events. 47/330 cut-off events. For 930/2468 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1766 event pairs, 5 based on Foata normal form. 7/328 useless extension candidates. Maximal degree in co-relation 952. Up to 61 conditions per place. [2022-11-18 20:26:10,443 INFO L137 encePairwiseOnDemand]: 83/92 looper letters, 14 selfloop transitions, 8 changer transitions 34/118 dead transitions. [2022-11-18 20:26:10,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 118 transitions, 765 flow [2022-11-18 20:26:10,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:26:10,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:26:10,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 543 transitions. [2022-11-18 20:26:10,446 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.843167701863354 [2022-11-18 20:26:10,447 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 543 transitions. [2022-11-18 20:26:10,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 543 transitions. [2022-11-18 20:26:10,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:10,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 543 transitions. [2022-11-18 20:26:10,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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) [2022-11-18 20:26:10,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2022-11-18 20:26:10,452 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2022-11-18 20:26:10,452 INFO L175 Difference]: Start difference. First operand has 124 places, 90 transitions, 394 flow. Second operand 7 states and 543 transitions. [2022-11-18 20:26:10,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 118 transitions, 765 flow [2022-11-18 20:26:10,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 118 transitions, 711 flow, removed 27 selfloop flow, removed 15 redundant places. [2022-11-18 20:26:10,460 INFO L231 Difference]: Finished difference. Result has 108 places, 82 transitions, 324 flow [2022-11-18 20:26:10,460 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=108, PETRI_TRANSITIONS=82} [2022-11-18 20:26:10,461 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 24 predicate places. [2022-11-18 20:26:10,461 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 82 transitions, 324 flow [2022-11-18 20:26:10,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2022-11-18 20:26:10,462 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:10,462 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:26:10,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:26:10,463 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)] === [2022-11-18 20:26:10,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:10,464 INFO L85 PathProgramCache]: Analyzing trace with hash 229838182, now seen corresponding path program 1 times [2022-11-18 20:26:10,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:10,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709765076] [2022-11-18 20:26:10,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:10,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:10,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:10,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:10,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709765076] [2022-11-18 20:26:10,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709765076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:10,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:10,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:26:10,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070547691] [2022-11-18 20:26:10,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:10,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:26:10,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:10,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:26:10,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:26:10,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-11-18 20:26:10,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 82 transitions, 324 flow. Second operand has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 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) [2022-11-18 20:26:10,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:10,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-11-18 20:26:10,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:10,971 INFO L130 PetriNetUnfolder]: 13/174 cut-off events. [2022-11-18 20:26:10,971 INFO L131 PetriNetUnfolder]: For 348/458 co-relation queries the response was YES. [2022-11-18 20:26:10,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 174 events. 13/174 cut-off events. For 348/458 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 585 event pairs, 1 based on Foata normal form. 10/179 useless extension candidates. Maximal degree in co-relation 418. Up to 18 conditions per place. [2022-11-18 20:26:10,973 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 15 selfloop transitions, 4 changer transitions 22/97 dead transitions. [2022-11-18 20:26:10,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 97 transitions, 502 flow [2022-11-18 20:26:10,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:26:10,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:26:10,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 950 transitions. [2022-11-18 20:26:10,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.794314381270903 [2022-11-18 20:26:10,978 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 950 transitions. [2022-11-18 20:26:10,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 950 transitions. [2022-11-18 20:26:10,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:10,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 950 transitions. [2022-11-18 20:26:10,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.07692307692308) internal successors, (950), 13 states have internal predecessors, (950), 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) [2022-11-18 20:26:10,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-11-18 20:26:10,986 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2022-11-18 20:26:10,987 INFO L175 Difference]: Start difference. First operand has 108 places, 82 transitions, 324 flow. Second operand 13 states and 950 transitions. [2022-11-18 20:26:10,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 97 transitions, 502 flow [2022-11-18 20:26:10,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 97 transitions, 445 flow, removed 13 selfloop flow, removed 8 redundant places. [2022-11-18 20:26:10,991 INFO L231 Difference]: Finished difference. Result has 117 places, 74 transitions, 234 flow [2022-11-18 20:26:10,992 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=234, PETRI_PLACES=117, PETRI_TRANSITIONS=74} [2022-11-18 20:26:10,995 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 33 predicate places. [2022-11-18 20:26:10,995 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 74 transitions, 234 flow [2022-11-18 20:26:10,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 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) [2022-11-18 20:26:10,996 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:10,996 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:26:10,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:26:11,000 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)] === [2022-11-18 20:26:11,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:11,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2065708888, now seen corresponding path program 1 times [2022-11-18 20:26:11,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:11,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200358802] [2022-11-18 20:26:11,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:11,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:11,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:11,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:11,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200358802] [2022-11-18 20:26:11,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200358802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:11,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:11,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:26:11,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428641309] [2022-11-18 20:26:11,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:11,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:26:11,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:11,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:26:11,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:26:11,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 92 [2022-11-18 20:26:11,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 74 transitions, 234 flow. Second operand has 8 states, 8 states have (on average 70.375) internal successors, (563), 8 states have internal predecessors, (563), 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) [2022-11-18 20:26:11,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:11,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 92 [2022-11-18 20:26:11,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:11,446 INFO L130 PetriNetUnfolder]: 6/88 cut-off events. [2022-11-18 20:26:11,446 INFO L131 PetriNetUnfolder]: For 120/139 co-relation queries the response was YES. [2022-11-18 20:26:11,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 88 events. 6/88 cut-off events. For 120/139 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 2 based on Foata normal form. 2/87 useless extension candidates. Maximal degree in co-relation 193. Up to 14 conditions per place. [2022-11-18 20:26:11,447 INFO L137 encePairwiseOnDemand]: 84/92 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2022-11-18 20:26:11,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 79 transitions, 321 flow [2022-11-18 20:26:11,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:26:11,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:26:11,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 776 transitions. [2022-11-18 20:26:11,451 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.766798418972332 [2022-11-18 20:26:11,452 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 776 transitions. [2022-11-18 20:26:11,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 776 transitions. [2022-11-18 20:26:11,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:11,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 776 transitions. [2022-11-18 20:26:11,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 70.54545454545455) internal successors, (776), 11 states have internal predecessors, (776), 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) [2022-11-18 20:26:11,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 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) [2022-11-18 20:26:11,458 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 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) [2022-11-18 20:26:11,458 INFO L175 Difference]: Start difference. First operand has 117 places, 74 transitions, 234 flow. Second operand 11 states and 776 transitions. [2022-11-18 20:26:11,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 79 transitions, 321 flow [2022-11-18 20:26:11,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 79 transitions, 243 flow, removed 19 selfloop flow, removed 19 redundant places. [2022-11-18 20:26:11,461 INFO L231 Difference]: Finished difference. Result has 97 places, 0 transitions, 0 flow [2022-11-18 20:26:11,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=97, PETRI_TRANSITIONS=0} [2022-11-18 20:26:11,462 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 13 predicate places. [2022-11-18 20:26:11,462 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 0 transitions, 0 flow [2022-11-18 20:26:11,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.375) internal successors, (563), 8 states have internal predecessors, (563), 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) [2022-11-18 20:26:11,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-18 20:26:11,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-18 20:26:11,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-18 20:26:11,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-18 20:26:11,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:26:11,468 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:26:11,472 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 20:26:11,472 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:26:11,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:26:11 BasicIcfg [2022-11-18 20:26:11,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:26:11,481 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:26:11,482 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:26:11,482 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:26:11,482 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:26:05" (3/4) ... [2022-11-18 20:26:11,487 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:26:11,497 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-18 20:26:11,501 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-18 20:26:11,501 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-18 20:26:11,509 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-18 20:26:11,509 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 20:26:11,510 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:26:11,510 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:26:11,569 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0341549-4e06-47e1-8c87-c94d596a153f/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:26:11,569 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:26:11,570 INFO L158 Benchmark]: Toolchain (without parser) took 7284.07ms. Allocated memory was 130.0MB in the beginning and 213.9MB in the end (delta: 83.9MB). Free memory was 93.3MB in the beginning and 154.5MB in the end (delta: -61.2MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2022-11-18 20:26:11,571 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 130.0MB. Free memory was 101.4MB in the beginning and 101.4MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:26:11,571 INFO L158 Benchmark]: CACSL2BoogieTranslator took 594.71ms. Allocated memory is still 130.0MB. Free memory was 93.3MB in the beginning and 92.8MB in the end (delta: 481.6kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:26:11,572 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.88ms. Allocated memory is still 130.0MB. Free memory was 92.8MB in the beginning and 91.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:26:11,572 INFO L158 Benchmark]: Boogie Preprocessor took 50.28ms. Allocated memory is still 130.0MB. Free memory was 91.0MB in the beginning and 89.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:26:11,573 INFO L158 Benchmark]: RCFGBuilder took 618.00ms. Allocated memory is still 130.0MB. Free memory was 89.2MB in the beginning and 76.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 20:26:11,573 INFO L158 Benchmark]: TraceAbstraction took 5839.06ms. Allocated memory was 130.0MB in the beginning and 213.9MB in the end (delta: 83.9MB). Free memory was 75.5MB in the beginning and 157.6MB in the end (delta: -82.1MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2022-11-18 20:26:11,573 INFO L158 Benchmark]: Witness Printer took 87.80ms. Allocated memory is still 213.9MB. Free memory was 157.6MB in the beginning and 154.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 20:26:11,577 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 130.0MB. Free memory was 101.4MB in the beginning and 101.4MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 594.71ms. Allocated memory is still 130.0MB. Free memory was 93.3MB in the beginning and 92.8MB in the end (delta: 481.6kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.88ms. Allocated memory is still 130.0MB. Free memory was 92.8MB in the beginning and 91.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.28ms. Allocated memory is still 130.0MB. Free memory was 91.0MB in the beginning and 89.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 618.00ms. Allocated memory is still 130.0MB. Free memory was 89.2MB in the beginning and 76.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5839.06ms. Allocated memory was 130.0MB in the beginning and 213.9MB in the end (delta: 83.9MB). Free memory was 75.5MB in the beginning and 157.6MB in the end (delta: -82.1MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. * Witness Printer took 87.80ms. Allocated memory is still 213.9MB. Free memory was 157.6MB in the beginning and 154.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.6s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 302 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 302 mSDsluCounter, 499 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 371 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 402 IncrementalHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 128 mSDtfsCounter, 402 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=394occurred in iteration=4, InterpolantAutomatonStates: 79, 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, 2.4s InterpolantComputationTime, 420 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 413 ConstructedInterpolants, 0 QuantifiedInterpolants, 2185 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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! [2022-11-18 20:26:11,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0341549-4e06-47e1-8c87-c94d596a153f/bin/uautomizer-TMbwUNV5ro/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