./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 e04fb08f 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_ecee6680-9ea7-4d68-8bed-f8c56cb64526/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecee6680-9ea7-4d68-8bed-f8c56cb64526/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecee6680-9ea7-4d68-8bed-f8c56cb64526/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecee6680-9ea7-4d68-8bed-f8c56cb64526/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecee6680-9ea7-4d68-8bed-f8c56cb64526/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecee6680-9ea7-4d68-8bed-f8c56cb64526/bin/uautomizer-tPACEb0tL8 --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-e04fb08 [2022-11-16 10:55:26,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:55:26,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:55:26,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:55:26,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:55:26,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:55:26,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:55:26,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:55:26,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:55:26,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:55:26,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:55:26,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:55:26,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:55:26,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:55:26,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:55:26,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:55:26,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:55:26,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:55:26,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:55:26,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:55:26,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:55:26,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:55:26,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:55:26,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:55:26,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:55:26,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:55:26,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:55:26,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:55:26,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:55:26,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:55:26,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:55:26,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:55:26,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:55:26,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:55:26,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:55:26,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:55:26,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:55:26,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:55:26,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:55:26,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:55:26,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:55:26,537 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecee6680-9ea7-4d68-8bed-f8c56cb64526/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 10:55:26,582 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:55:26,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:55:26,583 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:55:26,583 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:55:26,584 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:55:26,585 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:55:26,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:55:26,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:55:26,586 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:55:26,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:55:26,587 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:55:26,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:55:26,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:55:26,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:55:26,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 10:55:26,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:55:26,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 10:55:26,589 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:55:26,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 10:55:26,590 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:55:26,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 10:55:26,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:55:26,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:55:26,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:55:26,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:55:26,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:55:26,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:55:26,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 10:55:26,592 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 10:55:26,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 10:55:26,594 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 10:55:26,594 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 10:55:26,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 10:55:26,595 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_ecee6680-9ea7-4d68-8bed-f8c56cb64526/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecee6680-9ea7-4d68-8bed-f8c56cb64526/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c2ccb27a3ce50ce458a10a4aa8fbbd4d9c9d88060b8c7df98385ed8946afbfa [2022-11-16 10:55:26,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:55:26,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:55:26,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:55:26,891 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:55:26,893 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:55:26,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecee6680-9ea7-4d68-8bed-f8c56cb64526/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2022-11-16 10:55:26,967 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecee6680-9ea7-4d68-8bed-f8c56cb64526/bin/uautomizer-tPACEb0tL8/data/029d2b79e/ce9f13f658f54655b297d401bdac49c0/FLAGf5fb24201 [2022-11-16 10:55:27,385 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:55:27,385 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecee6680-9ea7-4d68-8bed-f8c56cb64526/sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2022-11-16 10:55:27,392 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecee6680-9ea7-4d68-8bed-f8c56cb64526/bin/uautomizer-tPACEb0tL8/data/029d2b79e/ce9f13f658f54655b297d401bdac49c0/FLAGf5fb24201 [2022-11-16 10:55:27,799 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecee6680-9ea7-4d68-8bed-f8c56cb64526/bin/uautomizer-tPACEb0tL8/data/029d2b79e/ce9f13f658f54655b297d401bdac49c0 [2022-11-16 10:55:27,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:55:27,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:55:27,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:55:27,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:55:27,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:55:27,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:55:27" (1/1) ... [2022-11-16 10:55:27,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29eaf08f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:27, skipping insertion in model container [2022-11-16 10:55:27,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:55:27" (1/1) ... [2022-11-16 10:55:27,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:55:27,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:55:28,064 WARN L229 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_ecee6680-9ea7-4d68-8bed-f8c56cb64526/sv-benchmarks/c/weaver/chl-match-subst.wvr.c[3017,3030] [2022-11-16 10:55:28,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:55:28,079 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:55:28,105 WARN L229 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_ecee6680-9ea7-4d68-8bed-f8c56cb64526/sv-benchmarks/c/weaver/chl-match-subst.wvr.c[3017,3030] [2022-11-16 10:55:28,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:55:28,121 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:55:28,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:28 WrapperNode [2022-11-16 10:55:28,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:55:28,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:55:28,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:55:28,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:55:28,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:28" (1/1) ... [2022-11-16 10:55:28,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:28" (1/1) ... [2022-11-16 10:55:28,184 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 206 [2022-11-16 10:55:28,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:55:28,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:55:28,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:55:28,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:55:28,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:28" (1/1) ... [2022-11-16 10:55:28,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:28" (1/1) ... [2022-11-16 10:55:28,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:28" (1/1) ... [2022-11-16 10:55:28,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:28" (1/1) ... [2022-11-16 10:55:28,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:28" (1/1) ... [2022-11-16 10:55:28,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:28" (1/1) ... [2022-11-16 10:55:28,208 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:28" (1/1) ... [2022-11-16 10:55:28,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:28" (1/1) ... [2022-11-16 10:55:28,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:55:28,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:55:28,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:55:28,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:55:28,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:28" (1/1) ... [2022-11-16 10:55:28,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:55:28,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecee6680-9ea7-4d68-8bed-f8c56cb64526/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:28,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecee6680-9ea7-4d68-8bed-f8c56cb64526/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:55:28,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecee6680-9ea7-4d68-8bed-f8c56cb64526/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:55:28,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:55:28,290 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 10:55:28,290 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 10:55:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 10:55:28,291 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 10:55:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 10:55:28,291 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 10:55:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 10:55:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 10:55:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 10:55:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:55:28,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:55:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 10:55:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 10:55:28,293 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 10:55:28,410 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:55:28,412 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:55:28,872 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:55:28,883 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:55:28,883 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 10:55:28,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:55:28 BoogieIcfgContainer [2022-11-16 10:55:28,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:55:28,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:55:28,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:55:28,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:55:28,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:55:27" (1/3) ... [2022-11-16 10:55:28,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10694daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:55:28, skipping insertion in model container [2022-11-16 10:55:28,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:28" (2/3) ... [2022-11-16 10:55:28,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10694daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:55:28, skipping insertion in model container [2022-11-16 10:55:28,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:55:28" (3/3) ... [2022-11-16 10:55:28,898 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-subst.wvr.c [2022-11-16 10:55:28,907 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 10:55:28,918 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:55:28,919 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 10:55:28,919 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 10:55:29,031 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 10:55:29,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 285 places, 289 transitions, 602 flow [2022-11-16 10:55:29,311 INFO L130 PetriNetUnfolder]: 14/286 cut-off events. [2022-11-16 10:55:29,311 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 10:55:29,324 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. [2022-11-16 10:55:29,324 INFO L82 GeneralOperation]: Start removeDead. Operand has 285 places, 289 transitions, 602 flow [2022-11-16 10:55:29,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 275 transitions, 568 flow [2022-11-16 10:55:29,368 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:55:29,381 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;@9a42bed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:55:29,382 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 10:55:29,485 INFO L130 PetriNetUnfolder]: 14/274 cut-off events. [2022-11-16 10:55:29,485 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 10:55:29,485 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:29,486 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] [2022-11-16 10:55:29,488 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)] === [2022-11-16 10:55:29,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:29,495 INFO L85 PathProgramCache]: Analyzing trace with hash 419350744, now seen corresponding path program 1 times [2022-11-16 10:55:29,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:29,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771820374] [2022-11-16 10:55:29,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:29,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:43,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:43,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771820374] [2022-11-16 10:55:43,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771820374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:43,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:43,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-11-16 10:55:43,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248711880] [2022-11-16 10:55:43,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:43,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-16 10:55:43,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:43,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-16 10:55:43,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1976, Unknown=0, NotChecked=0, Total=2070 [2022-11-16 10:55:43,085 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 289 [2022-11-16 10:55:43,102 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) [2022-11-16 10:55:43,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:43,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 289 [2022-11-16 10:55:43,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:10,177 INFO L130 PetriNetUnfolder]: 36422/79014 cut-off events. [2022-11-16 10:57:10,178 INFO L131 PetriNetUnfolder]: For 2977/2977 co-relation queries the response was YES. [2022-11-16 10:57:10,347 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. [2022-11-16 10:57:10,690 INFO L137 encePairwiseOnDemand]: 216/289 looper letters, 1419 selfloop transitions, 34 changer transitions 57/1659 dead transitions. [2022-11-16 10:57:10,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 1659 transitions, 6524 flow [2022-11-16 10:57:10,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-16 10:57:10,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2022-11-16 10:57:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 11623 transitions. [2022-11-16 10:57:10,734 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6593113619604062 [2022-11-16 10:57:10,735 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 11623 transitions. [2022-11-16 10:57:10,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 11623 transitions. [2022-11-16 10:57:10,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:10,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 11623 transitions. [2022-11-16 10:57:10,781 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) [2022-11-16 10:57:10,821 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) [2022-11-16 10:57:10,830 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) [2022-11-16 10:57:10,832 INFO L175 Difference]: Start difference. First operand has 271 places, 275 transitions, 568 flow. Second operand 61 states and 11623 transitions. [2022-11-16 10:57:10,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 1659 transitions, 6524 flow [2022-11-16 10:57:10,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 1659 transitions, 6400 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 10:57:10,890 INFO L231 Difference]: Finished difference. Result has 365 places, 276 transitions, 741 flow [2022-11-16 10:57:10,893 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} [2022-11-16 10:57:10,898 INFO L288 CegarLoopForPetriNet]: 271 programPoint places, 94 predicate places. [2022-11-16 10:57:10,899 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 276 transitions, 741 flow [2022-11-16 10:57:10,903 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) [2022-11-16 10:57:10,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:10,904 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] [2022-11-16 10:57:10,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 10:57:10,904 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)] === [2022-11-16 10:57:10,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:10,905 INFO L85 PathProgramCache]: Analyzing trace with hash 357940874, now seen corresponding path program 2 times [2022-11-16 10:57:10,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:10,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664318063] [2022-11-16 10:57:10,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:10,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:57:18,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:18,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664318063] [2022-11-16 10:57:18,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664318063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:18,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:18,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-11-16 10:57:18,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974163209] [2022-11-16 10:57:18,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:18,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-16 10:57:18,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:18,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-16 10:57:18,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1976, Unknown=0, NotChecked=0, Total=2070 [2022-11-16 10:57:18,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 289 [2022-11-16 10:57:18,394 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) [2022-11-16 10:57:18,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:18,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 289 [2022-11-16 10:57:18,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:58:22,919 INFO L130 PetriNetUnfolder]: 72412/155800 cut-off events. [2022-11-16 10:58:22,920 INFO L131 PetriNetUnfolder]: For 59126/59126 co-relation queries the response was YES. [2022-11-16 10:58:23,995 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. [2022-11-16 10:58:24,478 INFO L137 encePairwiseOnDemand]: 232/289 looper letters, 2050 selfloop transitions, 133 changer transitions 68/2400 dead transitions. [2022-11-16 10:58:24,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 2400 transitions, 12748 flow [2022-11-16 10:58:24,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-11-16 10:58:24,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2022-11-16 10:58:24,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 14754 transitions. [2022-11-16 10:58:24,515 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6545115783870109 [2022-11-16 10:58:24,516 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 14754 transitions. [2022-11-16 10:58:24,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 14754 transitions. [2022-11-16 10:58:24,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:58:24,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 14754 transitions. [2022-11-16 10:58:24,554 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) [2022-11-16 10:58:24,589 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) [2022-11-16 10:58:24,597 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) [2022-11-16 10:58:24,598 INFO L175 Difference]: Start difference. First operand has 365 places, 276 transitions, 741 flow. Second operand 78 states and 14754 transitions. [2022-11-16 10:58:24,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 2400 transitions, 12748 flow [2022-11-16 10:58:30,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 2400 transitions, 10362 flow, removed 270 selfloop flow, removed 39 redundant places. [2022-11-16 10:58:30,573 INFO L231 Difference]: Finished difference. Result has 443 places, 401 transitions, 1807 flow [2022-11-16 10:58:30,573 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} [2022-11-16 10:58:30,574 INFO L288 CegarLoopForPetriNet]: 271 programPoint places, 172 predicate places. [2022-11-16 10:58:30,574 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 401 transitions, 1807 flow [2022-11-16 10:58:30,577 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) [2022-11-16 10:58:30,578 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:58:30,578 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] [2022-11-16 10:58:30,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 10:58:30,579 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)] === [2022-11-16 10:58:30,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:30,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1975653952, now seen corresponding path program 3 times [2022-11-16 10:58:30,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:58:30,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553169950] [2022-11-16 10:58:30,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:30,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:58:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:36,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:58:36,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:36,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553169950] [2022-11-16 10:58:36,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553169950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:58:36,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:58:36,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-11-16 10:58:36,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182298793] [2022-11-16 10:58:36,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:58:36,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-16 10:58:36,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:58:36,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-16 10:58:36,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1976, Unknown=0, NotChecked=0, Total=2070 [2022-11-16 10:58:36,825 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 289 [2022-11-16 10:58:36,831 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) [2022-11-16 10:58:36,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:58:36,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 289 [2022-11-16 10:58:36,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand