./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_4194455a-0d23-45e8-a817-2fc15a5c6e5f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4194455a-0d23-45e8-a817-2fc15a5c6e5f/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4194455a-0d23-45e8-a817-2fc15a5c6e5f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4194455a-0d23-45e8-a817-2fc15a5c6e5f/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4194455a-0d23-45e8-a817-2fc15a5c6e5f/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4194455a-0d23-45e8-a817-2fc15a5c6e5f/bin/uautomizer-ug76WZFUDN --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 3c2ccb27a3ce50ce458a10a4aa8fbbd4d9c9d88060b8c7df98385ed8946afbfa --- 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-6b4ec56 [2022-11-20 12:49:53,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:49:53,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:49:53,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:49:53,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:49:53,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:49:53,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:49:53,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:49:53,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:49:53,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:49:53,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:49:53,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:49:53,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:49:53,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:49:53,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:49:53,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:49:53,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:49:53,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:49:53,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:49:53,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:49:53,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:49:53,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:49:53,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:49:53,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:49:53,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:49:53,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:49:53,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:49:53,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:49:53,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:49:53,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:49:53,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:49:53,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:49:53,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:49:53,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:49:53,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:49:53,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:49:53,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:49:53,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:49:53,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:49:54,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:49:54,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:49:54,001 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4194455a-0d23-45e8-a817-2fc15a5c6e5f/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:49:54,022 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:49:54,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:49:54,023 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:49:54,023 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:49:54,024 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:49:54,024 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:49:54,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:49:54,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:49:54,025 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:49:54,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:49:54,025 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:49:54,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:49:54,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:49:54,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:49:54,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:49:54,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:49:54,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:49:54,027 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:49:54,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:49:54,027 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:49:54,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:49:54,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:49:54,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:49:54,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:49:54,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:49:54,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:49:54,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:49:54,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:49:54,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:49:54,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:49:54,029 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:49:54,029 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:49:54,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:49:54,029 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_4194455a-0d23-45e8-a817-2fc15a5c6e5f/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4194455a-0d23-45e8-a817-2fc15a5c6e5f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c2ccb27a3ce50ce458a10a4aa8fbbd4d9c9d88060b8c7df98385ed8946afbfa [2022-11-20 12:49:54,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:49:54,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:49:54,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:49:54,315 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:49:54,319 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:49:54,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4194455a-0d23-45e8-a817-2fc15a5c6e5f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2022-11-20 12:49:57,371 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:49:57,576 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:49:57,577 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4194455a-0d23-45e8-a817-2fc15a5c6e5f/sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2022-11-20 12:49:57,584 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4194455a-0d23-45e8-a817-2fc15a5c6e5f/bin/uautomizer-ug76WZFUDN/data/ea446b195/a92911aaf1ec4723a9c6fb95ca07533a/FLAG1d388b613 [2022-11-20 12:49:57,599 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4194455a-0d23-45e8-a817-2fc15a5c6e5f/bin/uautomizer-ug76WZFUDN/data/ea446b195/a92911aaf1ec4723a9c6fb95ca07533a [2022-11-20 12:49:57,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:49:57,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:49:57,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:49:57,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:49:57,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:49:57,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:49:57" (1/1) ... [2022-11-20 12:49:57,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e58e5b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:57, skipping insertion in model container [2022-11-20 12:49:57,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:49:57" (1/1) ... [2022-11-20 12:49:57,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:49:57,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:49:57,863 WARN L237 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_4194455a-0d23-45e8-a817-2fc15a5c6e5f/sv-benchmarks/c/weaver/chl-match-subst.wvr.c[3017,3030] [2022-11-20 12:49:57,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:49:57,881 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:49:57,906 WARN L237 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_4194455a-0d23-45e8-a817-2fc15a5c6e5f/sv-benchmarks/c/weaver/chl-match-subst.wvr.c[3017,3030] [2022-11-20 12:49:57,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:49:57,922 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:49:57,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:57 WrapperNode [2022-11-20 12:49:57,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:49:57,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:49:57,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:49:57,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:49:57,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:57" (1/1) ... [2022-11-20 12:49:57,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:57" (1/1) ... [2022-11-20 12:49:57,976 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 206 [2022-11-20 12:49:57,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:49:57,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:49:57,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:49:57,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:49:57,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:57" (1/1) ... [2022-11-20 12:49:57,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:57" (1/1) ... [2022-11-20 12:49:57,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:57" (1/1) ... [2022-11-20 12:49:57,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:57" (1/1) ... [2022-11-20 12:49:57,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:57" (1/1) ... [2022-11-20 12:49:57,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:57" (1/1) ... [2022-11-20 12:49:58,001 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:57" (1/1) ... [2022-11-20 12:49:58,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:57" (1/1) ... [2022-11-20 12:49:58,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:49:58,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:49:58,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:49:58,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:49:58,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:57" (1/1) ... [2022-11-20 12:49:58,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:49:58,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4194455a-0d23-45e8-a817-2fc15a5c6e5f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:49:58,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4194455a-0d23-45e8-a817-2fc15a5c6e5f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:49:58,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4194455a-0d23-45e8-a817-2fc15a5c6e5f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:49:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:49:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:49:58,077 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:49:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:49:58,077 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:49:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:49:58,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:49:58,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:49:58,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:49:58,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:49:58,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:49:58,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:49:58,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:49:58,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:49:58,080 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:49:58,215 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:49:58,217 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:49:58,668 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:49:58,683 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:49:58,689 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:49:58,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:49:58 BoogieIcfgContainer [2022-11-20 12:49:58,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:49:58,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:49:58,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:49:58,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:49:58,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:49:57" (1/3) ... [2022-11-20 12:49:58,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132bd869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:49:58, skipping insertion in model container [2022-11-20 12:49:58,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:57" (2/3) ... [2022-11-20 12:49:58,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132bd869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:49:58, skipping insertion in model container [2022-11-20 12:49:58,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:49:58" (3/3) ... [2022-11-20 12:49:58,708 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-subst.wvr.c [2022-11-20 12:49:58,717 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:49:58,728 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:49:58,728 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:49:58,728 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:49:58,866 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 12:49:58,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 285 places, 289 transitions, 602 flow [2022-11-20 12:49:59,060 INFO L130 PetriNetUnfolder]: 14/286 cut-off events. [2022-11-20 12:49:59,060 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:49:59,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 286 events. 14/286 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 409 event pairs, 0 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2022-11-20 12:49:59,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 285 places, 289 transitions, 602 flow [2022-11-20 12:49:59,076 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 275 transitions, 568 flow [2022-11-20 12:49:59,085 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:49:59,092 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;@25becd06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:49:59,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 12:49:59,207 INFO L130 PetriNetUnfolder]: 14/274 cut-off events. [2022-11-20 12:49:59,207 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:49:59,207 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:49:59,208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:49:59,209 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)] === [2022-11-20 12:49:59,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:49:59,214 INFO L85 PathProgramCache]: Analyzing trace with hash 419350744, now seen corresponding path program 1 times [2022-11-20 12:49:59,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:49:59,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077932840] [2022-11-20 12:49:59,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:49:59,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:49:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:12,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:50:12,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:50:12,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077932840] [2022-11-20 12:50:12,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077932840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:12,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:12,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-11-20 12:50:12,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944464100] [2022-11-20 12:50:12,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:12,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-20 12:50:12,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:50:12,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-20 12:50:12,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1976, Unknown=0, NotChecked=0, Total=2070 [2022-11-20 12:50:12,822 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 289 [2022-11-20 12:50:12,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 275 transitions, 568 flow. Second operand has 46 states, 46 states have (on average 164.3913043478261) internal successors, (7562), 46 states have internal predecessors, (7562), 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) [2022-11-20 12:50:12,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:50:12,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 289 [2022-11-20 12:50:12,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:51:39,054 INFO L130 PetriNetUnfolder]: 36422/79014 cut-off events. [2022-11-20 12:51:39,055 INFO L131 PetriNetUnfolder]: For 2977/2977 co-relation queries the response was YES. [2022-11-20 12:51:39,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137366 conditions, 79014 events. 36422/79014 cut-off events. For 2977/2977 co-relation queries the response was YES. Maximal size of possible extension queue 1100. Compared 842322 event pairs, 1975 based on Foata normal form. 8638/84279 useless extension candidates. Maximal degree in co-relation 136839. Up to 6165 conditions per place. [2022-11-20 12:51:39,590 INFO L137 encePairwiseOnDemand]: 216/289 looper letters, 1419 selfloop transitions, 34 changer transitions 57/1659 dead transitions. [2022-11-20 12:51:39,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 1659 transitions, 6524 flow [2022-11-20 12:51:39,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-20 12:51:39,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2022-11-20 12:51:39,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 11623 transitions. [2022-11-20 12:51:39,638 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6593113619604062 [2022-11-20 12:51:39,639 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 11623 transitions. [2022-11-20 12:51:39,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 11623 transitions. [2022-11-20 12:51:39,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:51:39,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 11623 transitions. [2022-11-20 12:51:39,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 190.54098360655738) internal successors, (11623), 61 states have internal predecessors, (11623), 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) [2022-11-20 12:51:39,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 289.0) internal successors, (17918), 62 states have internal predecessors, (17918), 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) [2022-11-20 12:51:39,738 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 289.0) internal successors, (17918), 62 states have internal predecessors, (17918), 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) [2022-11-20 12:51:39,740 INFO L175 Difference]: Start difference. First operand has 271 places, 275 transitions, 568 flow. Second operand 61 states and 11623 transitions. [2022-11-20 12:51:39,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 1659 transitions, 6524 flow [2022-11-20 12:51:39,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 1659 transitions, 6400 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 12:51:39,799 INFO L231 Difference]: Finished difference. Result has 365 places, 276 transitions, 741 flow [2022-11-20 12:51:39,802 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=741, PETRI_PLACES=365, PETRI_TRANSITIONS=276} [2022-11-20 12:51:39,808 INFO L288 CegarLoopForPetriNet]: 271 programPoint places, 94 predicate places. [2022-11-20 12:51:39,808 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 276 transitions, 741 flow [2022-11-20 12:51:39,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 164.3913043478261) internal successors, (7562), 46 states have internal predecessors, (7562), 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) [2022-11-20 12:51:39,813 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:51:39,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:51:39,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:51:39,815 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)] === [2022-11-20 12:51:39,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:51:39,816 INFO L85 PathProgramCache]: Analyzing trace with hash 357940874, now seen corresponding path program 2 times [2022-11-20 12:51:39,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:51:39,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251998397] [2022-11-20 12:51:39,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:39,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:51:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:51:47,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:51:47,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:51:47,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251998397] [2022-11-20 12:51:47,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251998397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:51:47,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:51:47,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-11-20 12:51:47,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193562] [2022-11-20 12:51:47,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:51:47,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-20 12:51:47,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:51:47,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-20 12:51:47,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1976, Unknown=0, NotChecked=0, Total=2070 [2022-11-20 12:51:47,790 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 289 [2022-11-20 12:51:47,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 276 transitions, 741 flow. Second operand has 46 states, 46 states have (on average 164.3913043478261) internal successors, (7562), 46 states have internal predecessors, (7562), 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) [2022-11-20 12:51:47,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:51:47,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 289 [2022-11-20 12:51:47,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:52:56,032 INFO L130 PetriNetUnfolder]: 72412/155800 cut-off events. [2022-11-20 12:52:56,033 INFO L131 PetriNetUnfolder]: For 59126/59126 co-relation queries the response was YES. [2022-11-20 12:52:57,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346385 conditions, 155800 events. 72412/155800 cut-off events. For 59126/59126 co-relation queries the response was YES. Maximal size of possible extension queue 2175. Compared 1798542 event pairs, 20262 based on Foata normal form. 1/149819 useless extension candidates. Maximal degree in co-relation 346282. Up to 26971 conditions per place. [2022-11-20 12:52:58,330 INFO L137 encePairwiseOnDemand]: 232/289 looper letters, 2050 selfloop transitions, 133 changer transitions 68/2400 dead transitions. [2022-11-20 12:52:58,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 2400 transitions, 12748 flow [2022-11-20 12:52:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-11-20 12:52:58,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2022-11-20 12:52:58,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 14754 transitions. [2022-11-20 12:52:58,375 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6545115783870109 [2022-11-20 12:52:58,375 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 14754 transitions. [2022-11-20 12:52:58,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 14754 transitions. [2022-11-20 12:52:58,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:52:58,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 14754 transitions. [2022-11-20 12:52:58,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 189.15384615384616) internal successors, (14754), 78 states have internal predecessors, (14754), 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) [2022-11-20 12:52:58,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 289.0) internal successors, (22831), 79 states have internal predecessors, (22831), 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) [2022-11-20 12:52:58,481 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 289.0) internal successors, (22831), 79 states have internal predecessors, (22831), 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) [2022-11-20 12:52:58,482 INFO L175 Difference]: Start difference. First operand has 365 places, 276 transitions, 741 flow. Second operand 78 states and 14754 transitions. [2022-11-20 12:52:58,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 2400 transitions, 12748 flow [2022-11-20 12:53:05,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 2400 transitions, 10362 flow, removed 270 selfloop flow, removed 39 redundant places. [2022-11-20 12:53:05,320 INFO L231 Difference]: Finished difference. Result has 443 places, 401 transitions, 1807 flow [2022-11-20 12:53:05,321 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=78, PETRI_FLOW=1807, PETRI_PLACES=443, PETRI_TRANSITIONS=401} [2022-11-20 12:53:05,321 INFO L288 CegarLoopForPetriNet]: 271 programPoint places, 172 predicate places. [2022-11-20 12:53:05,322 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 401 transitions, 1807 flow [2022-11-20 12:53:05,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 164.3913043478261) internal successors, (7562), 46 states have internal predecessors, (7562), 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) [2022-11-20 12:53:05,325 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:53:05,326 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:53:05,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:53:05,326 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)] === [2022-11-20 12:53:05,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:53:05,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1975653952, now seen corresponding path program 3 times [2022-11-20 12:53:05,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:53:05,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919515532] [2022-11-20 12:53:05,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:53:05,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:53:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:53:12,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:53:12,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:53:12,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919515532] [2022-11-20 12:53:12,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919515532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:53:12,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:53:12,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-11-20 12:53:12,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502541014] [2022-11-20 12:53:12,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:53:12,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-20 12:53:12,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:53:12,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-20 12:53:12,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1976, Unknown=0, NotChecked=0, Total=2070 [2022-11-20 12:53:12,384 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 289 [2022-11-20 12:53:12,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 401 transitions, 1807 flow. Second operand has 46 states, 46 states have (on average 164.3913043478261) internal successors, (7562), 46 states have internal predecessors, (7562), 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) [2022-11-20 12:53:12,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:53:12,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 289 [2022-11-20 12:53:12,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand