./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc --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 3ea4ca0f63ee44295abb2f56a10a45cd5c3c9aada41df664ec74c618092ddbca --- 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-5e519f3 [2022-11-02 20:08:49,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:08:49,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:08:49,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:08:49,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:08:49,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:08:49,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:08:49,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:08:49,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:08:49,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:08:49,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:08:49,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:08:49,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:08:49,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:08:49,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:08:49,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:08:49,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:08:49,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:08:49,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:08:49,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:08:49,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:08:49,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:08:49,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:08:49,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:08:49,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:08:49,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:08:49,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:08:49,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:08:49,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:08:49,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:08:49,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:08:49,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:08:49,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:08:49,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:08:49,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:08:49,239 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:08:49,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:08:49,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:08:49,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:08:49,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:08:49,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:08:49,243 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:08:49,273 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:08:49,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:08:49,274 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:08:49,275 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:08:49,275 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:08:49,276 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:08:49,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:08:49,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:08:49,277 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:08:49,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:08:49,278 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:08:49,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:08:49,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:08:49,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:08:49,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:08:49,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:08:49,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:08:49,280 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:08:49,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:08:49,280 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:08:49,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:08:49,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:08:49,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:08:49,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:08:49,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:08:49,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:08:49,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:08:49,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:08:49,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:08:49,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:08:49,283 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:08:49,284 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:08:49,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:08:49,284 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_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ea4ca0f63ee44295abb2f56a10a45cd5c3c9aada41df664ec74c618092ddbca [2022-11-02 20:08:49,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:08:49,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:08:49,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:08:49,605 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:08:49,606 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:08:49,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2022-11-02 20:08:49,696 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/data/6210589a7/bb2331f5965841d689fbb80be9055802/FLAG361c44c96 [2022-11-02 20:08:50,233 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:08:50,234 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2022-11-02 20:08:50,243 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/data/6210589a7/bb2331f5965841d689fbb80be9055802/FLAG361c44c96 [2022-11-02 20:08:50,568 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/data/6210589a7/bb2331f5965841d689fbb80be9055802 [2022-11-02 20:08:50,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:08:50,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:08:50,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:08:50,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:08:50,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:08:50,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:08:50" (1/1) ... [2022-11-02 20:08:50,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36cc35b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:50, skipping insertion in model container [2022-11-02 20:08:50,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:08:50" (1/1) ... [2022-11-02 20:08:50,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:08:50,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:08:50,981 WARN L230 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_30124380-98dc-47e9-ac19-f79ef269027d/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c[3019,3032] [2022-11-02 20:08:50,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:08:51,007 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:08:51,041 WARN L230 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_30124380-98dc-47e9-ac19-f79ef269027d/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c[3019,3032] [2022-11-02 20:08:51,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:08:51,060 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:08:51,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:51 WrapperNode [2022-11-02 20:08:51,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:08:51,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:08:51,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:08:51,062 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:08:51,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:51" (1/1) ... [2022-11-02 20:08:51,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:51" (1/1) ... [2022-11-02 20:08:51,105 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 137 [2022-11-02 20:08:51,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:08:51,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:08:51,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:08:51,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:08:51,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:51" (1/1) ... [2022-11-02 20:08:51,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:51" (1/1) ... [2022-11-02 20:08:51,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:51" (1/1) ... [2022-11-02 20:08:51,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:51" (1/1) ... [2022-11-02 20:08:51,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:51" (1/1) ... [2022-11-02 20:08:51,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:51" (1/1) ... [2022-11-02 20:08:51,136 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:51" (1/1) ... [2022-11-02 20:08:51,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:51" (1/1) ... [2022-11-02 20:08:51,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:08:51,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:08:51,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:08:51,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:08:51,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:51" (1/1) ... [2022-11-02 20:08:51,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:08:51,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:51,191 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:51,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:08:51,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:08:51,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:08:51,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:08:51,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:08:51,230 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:08:51,231 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:08:51,231 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:08:51,231 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:08:51,231 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 20:08:51,231 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 20:08:51,231 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-02 20:08:51,231 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-02 20:08:51,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:08:51,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:08:51,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:08:51,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:08:51,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:08:51,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:08:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:08:51,234 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:08:51,384 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:08:51,386 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:08:51,751 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:08:51,881 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:08:51,881 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 20:08:51,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:08:51 BoogieIcfgContainer [2022-11-02 20:08:51,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:08:51,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:08:51,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:08:51,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:08:51,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:08:50" (1/3) ... [2022-11-02 20:08:51,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e70a3f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:08:51, skipping insertion in model container [2022-11-02 20:08:51,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:51" (2/3) ... [2022-11-02 20:08:51,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e70a3f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:08:51, skipping insertion in model container [2022-11-02 20:08:51,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:08:51" (3/3) ... [2022-11-02 20:08:51,895 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2022-11-02 20:08:51,904 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:08:51,916 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:08:51,916 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:08:51,916 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:08:52,042 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-02 20:08:52,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 172 transitions, 376 flow [2022-11-02 20:08:52,164 INFO L130 PetriNetUnfolder]: 12/168 cut-off events. [2022-11-02 20:08:52,165 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 20:08:52,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 168 events. 12/168 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 113 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 134. Up to 2 conditions per place. [2022-11-02 20:08:52,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 172 transitions, 376 flow [2022-11-02 20:08:52,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 155 transitions, 334 flow [2022-11-02 20:08:52,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:08:52,197 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;@cec13bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:08:52,198 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:08:52,283 INFO L130 PetriNetUnfolder]: 12/154 cut-off events. [2022-11-02 20:08:52,284 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 20:08:52,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:08:52,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:52,287 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 2 more)] === [2022-11-02 20:08:52,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:52,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1245552693, now seen corresponding path program 1 times [2022-11-02 20:08:52,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:52,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109556027] [2022-11-02 20:08:52,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:52,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:52,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:52,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109556027] [2022-11-02 20:08:52,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109556027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:52,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:52,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:08:52,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379808087] [2022-11-02 20:08:52,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:52,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:08:52,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:52,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:08:52,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:08:52,740 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 172 [2022-11-02 20:08:52,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 155 transitions, 334 flow. Second operand has 2 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 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) [2022-11-02 20:08:52,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:08:52,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 172 [2022-11-02 20:08:52,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:08:52,978 INFO L130 PetriNetUnfolder]: 105/512 cut-off events. [2022-11-02 20:08:52,978 INFO L131 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2022-11-02 20:08:52,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 512 events. 105/512 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2344 event pairs, 71 based on Foata normal form. 67/517 useless extension candidates. Maximal degree in co-relation 583. Up to 144 conditions per place. [2022-11-02 20:08:52,988 INFO L137 encePairwiseOnDemand]: 164/172 looper letters, 13 selfloop transitions, 0 changer transitions 4/147 dead transitions. [2022-11-02 20:08:52,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 147 transitions, 344 flow [2022-11-02 20:08:52,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:08:52,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:08:53,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 321 transitions. [2022-11-02 20:08:53,011 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9331395348837209 [2022-11-02 20:08:53,012 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 321 transitions. [2022-11-02 20:08:53,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 321 transitions. [2022-11-02 20:08:53,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:08:53,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 321 transitions. [2022-11-02 20:08:53,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 160.5) internal successors, (321), 2 states have internal predecessors, (321), 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) [2022-11-02 20:08:53,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:53,035 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:53,037 INFO L175 Difference]: Start difference. First operand has 156 places, 155 transitions, 334 flow. Second operand 2 states and 321 transitions. [2022-11-02 20:08:53,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 147 transitions, 344 flow [2022-11-02 20:08:53,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 147 transitions, 328 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-02 20:08:53,047 INFO L231 Difference]: Finished difference. Result has 149 places, 143 transitions, 294 flow [2022-11-02 20:08:53,050 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=294, PETRI_PLACES=149, PETRI_TRANSITIONS=143} [2022-11-02 20:08:53,053 INFO L287 CegarLoopForPetriNet]: 156 programPoint places, -7 predicate places. [2022-11-02 20:08:53,054 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 143 transitions, 294 flow [2022-11-02 20:08:53,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 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) [2022-11-02 20:08:53,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:08:53,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:53,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:08:53,056 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 2 more)] === [2022-11-02 20:08:53,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:53,057 INFO L85 PathProgramCache]: Analyzing trace with hash -595537816, now seen corresponding path program 1 times [2022-11-02 20:08:53,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:53,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248571438] [2022-11-02 20:08:53,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:53,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:53,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:53,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:53,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248571438] [2022-11-02 20:08:53,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248571438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:53,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:53,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:08:53,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983530364] [2022-11-02 20:08:53,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:53,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:08:53,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:53,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:08:53,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:08:53,755 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 172 [2022-11-02 20:08:53,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 143 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 123.5) internal successors, (741), 6 states have internal predecessors, (741), 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) [2022-11-02 20:08:53,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:08:53,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 172 [2022-11-02 20:08:53,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:08:54,349 INFO L130 PetriNetUnfolder]: 1341/2483 cut-off events. [2022-11-02 20:08:54,349 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-02 20:08:54,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4637 conditions, 2483 events. 1341/2483 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 16148 event pairs, 633 based on Foata normal form. 0/2006 useless extension candidates. Maximal degree in co-relation 4634. Up to 1227 conditions per place. [2022-11-02 20:08:54,378 INFO L137 encePairwiseOnDemand]: 166/172 looper letters, 50 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2022-11-02 20:08:54,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 157 transitions, 435 flow [2022-11-02 20:08:54,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:08:54,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:08:54,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 764 transitions. [2022-11-02 20:08:54,384 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7403100775193798 [2022-11-02 20:08:54,384 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 764 transitions. [2022-11-02 20:08:54,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 764 transitions. [2022-11-02 20:08:54,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:08:54,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 764 transitions. [2022-11-02 20:08:54,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 127.33333333333333) internal successors, (764), 6 states have internal predecessors, (764), 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) [2022-11-02 20:08:54,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 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) [2022-11-02 20:08:54,392 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 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) [2022-11-02 20:08:54,393 INFO L175 Difference]: Start difference. First operand has 149 places, 143 transitions, 294 flow. Second operand 6 states and 764 transitions. [2022-11-02 20:08:54,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 157 transitions, 435 flow [2022-11-02 20:08:54,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 157 transitions, 435 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:08:54,401 INFO L231 Difference]: Finished difference. Result has 151 places, 144 transitions, 312 flow [2022-11-02 20:08:54,402 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=151, PETRI_TRANSITIONS=144} [2022-11-02 20:08:54,402 INFO L287 CegarLoopForPetriNet]: 156 programPoint places, -5 predicate places. [2022-11-02 20:08:54,403 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 144 transitions, 312 flow [2022-11-02 20:08:54,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 123.5) internal successors, (741), 6 states have internal predecessors, (741), 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) [2022-11-02 20:08:54,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:08:54,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:54,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:08:54,405 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 2 more)] === [2022-11-02 20:08:54,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:54,406 INFO L85 PathProgramCache]: Analyzing trace with hash 2035887881, now seen corresponding path program 1 times [2022-11-02 20:08:54,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:54,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464440525] [2022-11-02 20:08:54,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:54,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:54,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:54,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:54,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464440525] [2022-11-02 20:08:54,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464440525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:54,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:54,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:08:54,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633043982] [2022-11-02 20:08:54,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:54,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:08:54,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:54,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:08:54,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:08:54,744 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 172 [2022-11-02 20:08:54,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 144 transitions, 312 flow. Second operand has 7 states, 7 states have (on average 130.14285714285714) internal successors, (911), 7 states have internal predecessors, (911), 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) [2022-11-02 20:08:54,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:08:54,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 172 [2022-11-02 20:08:54,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:08:55,538 INFO L130 PetriNetUnfolder]: 1707/3469 cut-off events. [2022-11-02 20:08:55,539 INFO L131 PetriNetUnfolder]: For 414/414 co-relation queries the response was YES. [2022-11-02 20:08:55,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6473 conditions, 3469 events. 1707/3469 cut-off events. For 414/414 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 24884 event pairs, 1140 based on Foata normal form. 46/2928 useless extension candidates. Maximal degree in co-relation 6468. Up to 1917 conditions per place. [2022-11-02 20:08:55,577 INFO L137 encePairwiseOnDemand]: 163/172 looper letters, 36 selfloop transitions, 6 changer transitions 24/172 dead transitions. [2022-11-02 20:08:55,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 172 transitions, 510 flow [2022-11-02 20:08:55,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:08:55,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 20:08:55,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1074 transitions. [2022-11-02 20:08:55,581 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7805232558139535 [2022-11-02 20:08:55,582 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1074 transitions. [2022-11-02 20:08:55,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1074 transitions. [2022-11-02 20:08:55,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:08:55,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1074 transitions. [2022-11-02 20:08:55,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.25) internal successors, (1074), 8 states have internal predecessors, (1074), 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) [2022-11-02 20:08:55,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 172.0) internal successors, (1548), 9 states have internal predecessors, (1548), 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) [2022-11-02 20:08:55,591 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 172.0) internal successors, (1548), 9 states have internal predecessors, (1548), 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) [2022-11-02 20:08:55,592 INFO L175 Difference]: Start difference. First operand has 151 places, 144 transitions, 312 flow. Second operand 8 states and 1074 transitions. [2022-11-02 20:08:55,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 172 transitions, 510 flow [2022-11-02 20:08:55,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 172 transitions, 501 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:08:55,601 INFO L231 Difference]: Finished difference. Result has 157 places, 145 transitions, 328 flow [2022-11-02 20:08:55,602 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=328, PETRI_PLACES=157, PETRI_TRANSITIONS=145} [2022-11-02 20:08:55,603 INFO L287 CegarLoopForPetriNet]: 156 programPoint places, 1 predicate places. [2022-11-02 20:08:55,603 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 145 transitions, 328 flow [2022-11-02 20:08:55,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.14285714285714) internal successors, (911), 7 states have internal predecessors, (911), 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) [2022-11-02 20:08:55,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:08:55,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:55,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:08:55,605 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:08:55,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:55,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1371607442, now seen corresponding path program 1 times [2022-11-02 20:08:55,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:55,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510238631] [2022-11-02 20:08:55,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:55,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:55,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:55,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:55,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510238631] [2022-11-02 20:08:55,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510238631] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:55,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342694880] [2022-11-02 20:08:55,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:55,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:55,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:55,957 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:55,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:08:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:56,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:08:56,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:56,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:56,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:56,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342694880] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:56,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:08:56,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-02 20:08:56,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127598633] [2022-11-02 20:08:56,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:56,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:08:56,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:56,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:08:56,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:08:56,747 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 172 [2022-11-02 20:08:56,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 145 transitions, 328 flow. Second operand has 7 states, 7 states have (on average 130.42857142857142) internal successors, (913), 7 states have internal predecessors, (913), 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) [2022-11-02 20:08:56,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:08:56,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 172 [2022-11-02 20:08:56,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:08:57,482 INFO L130 PetriNetUnfolder]: 1362/2463 cut-off events. [2022-11-02 20:08:57,483 INFO L131 PetriNetUnfolder]: For 270/331 co-relation queries the response was YES. [2022-11-02 20:08:57,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4933 conditions, 2463 events. 1362/2463 cut-off events. For 270/331 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15551 event pairs, 495 based on Foata normal form. 61/2137 useless extension candidates. Maximal degree in co-relation 4925. Up to 1007 conditions per place. [2022-11-02 20:08:57,515 INFO L137 encePairwiseOnDemand]: 164/172 looper letters, 43 selfloop transitions, 7 changer transitions 0/157 dead transitions. [2022-11-02 20:08:57,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 157 transitions, 459 flow [2022-11-02 20:08:57,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:08:57,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:08:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 932 transitions. [2022-11-02 20:08:57,522 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7740863787375415 [2022-11-02 20:08:57,522 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 932 transitions. [2022-11-02 20:08:57,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 932 transitions. [2022-11-02 20:08:57,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:08:57,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 932 transitions. [2022-11-02 20:08:57,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.14285714285714) internal successors, (932), 7 states have internal predecessors, (932), 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) [2022-11-02 20:08:57,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 172.0) internal successors, (1376), 8 states have internal predecessors, (1376), 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) [2022-11-02 20:08:57,534 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 172.0) internal successors, (1376), 8 states have internal predecessors, (1376), 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) [2022-11-02 20:08:57,534 INFO L175 Difference]: Start difference. First operand has 157 places, 145 transitions, 328 flow. Second operand 7 states and 932 transitions. [2022-11-02 20:08:57,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 157 transitions, 459 flow [2022-11-02 20:08:57,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 157 transitions, 443 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-02 20:08:57,542 INFO L231 Difference]: Finished difference. Result has 158 places, 147 transitions, 347 flow [2022-11-02 20:08:57,542 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=347, PETRI_PLACES=158, PETRI_TRANSITIONS=147} [2022-11-02 20:08:57,544 INFO L287 CegarLoopForPetriNet]: 156 programPoint places, 2 predicate places. [2022-11-02 20:08:57,544 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 147 transitions, 347 flow [2022-11-02 20:08:57,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.42857142857142) internal successors, (913), 7 states have internal predecessors, (913), 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) [2022-11-02 20:08:57,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:08:57,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:57,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:08:57,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:57,762 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:08:57,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:57,763 INFO L85 PathProgramCache]: Analyzing trace with hash 169688933, now seen corresponding path program 1 times [2022-11-02 20:08:57,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:57,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823285170] [2022-11-02 20:08:57,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:57,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:58,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:08:58,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:58,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823285170] [2022-11-02 20:08:58,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823285170] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:58,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389988729] [2022-11-02 20:08:58,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:58,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:58,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:58,092 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:58,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:08:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:58,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:08:58,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:08:58,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:58,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:08:58,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389988729] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:58,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:08:58,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-02 20:08:58,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934004157] [2022-11-02 20:08:58,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:58,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:08:58,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:58,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:08:58,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:08:58,811 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 172 [2022-11-02 20:08:58,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 147 transitions, 347 flow. Second operand has 7 states, 7 states have (on average 130.71428571428572) internal successors, (915), 7 states have internal predecessors, (915), 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) [2022-11-02 20:08:58,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:08:58,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 172 [2022-11-02 20:08:58,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:08:59,460 INFO L130 PetriNetUnfolder]: 1309/2408 cut-off events. [2022-11-02 20:08:59,460 INFO L131 PetriNetUnfolder]: For 696/973 co-relation queries the response was YES. [2022-11-02 20:08:59,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5238 conditions, 2408 events. 1309/2408 cut-off events. For 696/973 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 15243 event pairs, 472 based on Foata normal form. 277/2523 useless extension candidates. Maximal degree in co-relation 5229. Up to 1084 conditions per place. [2022-11-02 20:08:59,489 INFO L137 encePairwiseOnDemand]: 164/172 looper letters, 46 selfloop transitions, 7 changer transitions 0/160 dead transitions. [2022-11-02 20:08:59,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 160 transitions, 492 flow [2022-11-02 20:08:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:08:59,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:08:59,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 933 transitions. [2022-11-02 20:08:59,492 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7749169435215947 [2022-11-02 20:08:59,493 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 933 transitions. [2022-11-02 20:08:59,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 933 transitions. [2022-11-02 20:08:59,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:08:59,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 933 transitions. [2022-11-02 20:08:59,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.28571428571428) internal successors, (933), 7 states have internal predecessors, (933), 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) [2022-11-02 20:08:59,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 172.0) internal successors, (1376), 8 states have internal predecessors, (1376), 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) [2022-11-02 20:08:59,499 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 172.0) internal successors, (1376), 8 states have internal predecessors, (1376), 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) [2022-11-02 20:08:59,500 INFO L175 Difference]: Start difference. First operand has 158 places, 147 transitions, 347 flow. Second operand 7 states and 933 transitions. [2022-11-02 20:08:59,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 160 transitions, 492 flow [2022-11-02 20:08:59,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 160 transitions, 483 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:08:59,510 INFO L231 Difference]: Finished difference. Result has 162 places, 148 transitions, 366 flow [2022-11-02 20:08:59,510 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=366, PETRI_PLACES=162, PETRI_TRANSITIONS=148} [2022-11-02 20:08:59,514 INFO L287 CegarLoopForPetriNet]: 156 programPoint places, 6 predicate places. [2022-11-02 20:08:59,514 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 148 transitions, 366 flow [2022-11-02 20:08:59,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.71428571428572) internal successors, (915), 7 states have internal predecessors, (915), 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) [2022-11-02 20:08:59,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:08:59,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:59,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-02 20:08:59,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:59,739 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:08:59,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:59,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1362204798, now seen corresponding path program 1 times [2022-11-02 20:08:59,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:59,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081787170] [2022-11-02 20:08:59,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:59,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:09:00,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:00,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081787170] [2022-11-02 20:09:00,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081787170] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:09:00,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779847274] [2022-11-02 20:09:00,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:00,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:09:00,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:09:00,954 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:09:00,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:09:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:01,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 20:09:01,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:01,565 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:09:01,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:09:01,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:09:02,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:09:02,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779847274] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:09:02,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:09:02,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 16] total 27 [2022-11-02 20:09:02,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842783126] [2022-11-02 20:09:02,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:02,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:09:02,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:02,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:09:02,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:09:02,410 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 172 [2022-11-02 20:09:02,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 148 transitions, 366 flow. Second operand has 10 states, 10 states have (on average 108.6) internal successors, (1086), 10 states have internal predecessors, (1086), 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) [2022-11-02 20:09:02,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:09:02,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 172 [2022-11-02 20:09:02,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:09:09,713 INFO L130 PetriNetUnfolder]: 15861/29217 cut-off events. [2022-11-02 20:09:09,713 INFO L131 PetriNetUnfolder]: For 8991/8993 co-relation queries the response was YES. [2022-11-02 20:09:09,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60861 conditions, 29217 events. 15861/29217 cut-off events. For 8991/8993 co-relation queries the response was YES. Maximal size of possible extension queue 1260. Compared 263646 event pairs, 2399 based on Foata normal form. 2/28411 useless extension candidates. Maximal degree in co-relation 60850. Up to 6462 conditions per place. [2022-11-02 20:09:10,126 INFO L137 encePairwiseOnDemand]: 158/172 looper letters, 177 selfloop transitions, 23 changer transitions 70/360 dead transitions. [2022-11-02 20:09:10,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 360 transitions, 1519 flow [2022-11-02 20:09:10,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:09:10,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-02 20:09:10,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1801 transitions. [2022-11-02 20:09:10,132 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6980620155038759 [2022-11-02 20:09:10,133 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1801 transitions. [2022-11-02 20:09:10,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1801 transitions. [2022-11-02 20:09:10,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:09:10,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1801 transitions. [2022-11-02 20:09:10,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 120.06666666666666) internal successors, (1801), 15 states have internal predecessors, (1801), 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) [2022-11-02 20:09:10,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 172.0) internal successors, (2752), 16 states have internal predecessors, (2752), 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) [2022-11-02 20:09:10,147 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 172.0) internal successors, (2752), 16 states have internal predecessors, (2752), 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) [2022-11-02 20:09:10,147 INFO L175 Difference]: Start difference. First operand has 162 places, 148 transitions, 366 flow. Second operand 15 states and 1801 transitions. [2022-11-02 20:09:10,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 360 transitions, 1519 flow [2022-11-02 20:09:10,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 360 transitions, 1509 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:09:10,347 INFO L231 Difference]: Finished difference. Result has 185 places, 172 transitions, 551 flow [2022-11-02 20:09:10,348 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=551, PETRI_PLACES=185, PETRI_TRANSITIONS=172} [2022-11-02 20:09:10,349 INFO L287 CegarLoopForPetriNet]: 156 programPoint places, 29 predicate places. [2022-11-02 20:09:10,349 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 172 transitions, 551 flow [2022-11-02 20:09:10,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 108.6) internal successors, (1086), 10 states have internal predecessors, (1086), 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) [2022-11-02 20:09:10,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:09:10,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:10,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:10,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:09:10,572 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:09:10,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:10,572 INFO L85 PathProgramCache]: Analyzing trace with hash -2007048956, now seen corresponding path program 2 times [2022-11-02 20:09:10,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:10,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054691248] [2022-11-02 20:09:10,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:10,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:09:11,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:11,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054691248] [2022-11-02 20:09:11,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054691248] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:09:11,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301946921] [2022-11-02 20:09:11,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:09:11,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:09:11,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:09:11,970 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:09:11,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:09:12,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:09:12,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:09:12,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-02 20:09:12,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:12,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:09:12,212 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 20:09:12,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-02 20:09:12,271 INFO L356 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-02 20:09:12,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 33 [2022-11-02 20:09:12,498 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:09:12,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-02 20:09:13,055 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:09:13,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:09:13,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:09:13,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:09:13,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:09:13,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:09:13,890 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_227 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_227) c_~A~0.base) c_~A~0.offset))) (or (<= c_~min~0 (+ .cse0 1)) (<= 2147483647 .cse0)))) is different from false [2022-11-02 20:09:13,956 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_227 (Array Int Int)) (v_ArrVal_226 (Array Int Int))) (let ((.cse0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_226) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_227) c_~A~0.base) c_~A~0.offset))) (or (<= 2147483647 .cse0) (<= c_~min~0 (+ .cse0 1))))) is different from false [2022-11-02 20:09:14,335 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset))) (let ((.cse0 (< c_~min~0 .cse1))) (and (or .cse0 (forall ((v_ArrVal_227 (Array Int Int)) (v_ArrVal_226 (Array Int Int))) (let ((.cse2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_226) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_227) c_~A~0.base) c_~A~0.offset))) (or (<= .cse1 (+ .cse2 1)) (<= 2147483647 .cse2))))) (or (forall ((v_ArrVal_227 (Array Int Int)) (v_ArrVal_226 (Array Int Int))) (let ((.cse3 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_226) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_227) c_~A~0.base) c_~A~0.offset))) (or (<= 2147483647 .cse3) (<= c_~min~0 (+ .cse3 1))))) (not .cse0))))) is different from false [2022-11-02 20:09:14,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 97 [2022-11-02 20:09:14,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 85 [2022-11-02 20:09:14,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2022-11-02 20:09:15,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-02 20:09:15,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301946921] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:09:15,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:09:15,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 20] total 43 [2022-11-02 20:09:15,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125239809] [2022-11-02 20:09:15,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:09:15,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-02 20:09:15,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:15,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-02 20:09:15,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1414, Unknown=6, NotChecked=234, Total=1806 [2022-11-02 20:09:15,211 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 172 [2022-11-02 20:09:15,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 172 transitions, 551 flow. Second operand has 43 states, 43 states have (on average 84.18604651162791) internal successors, (3620), 43 states have internal predecessors, (3620), 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) [2022-11-02 20:09:15,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:09:15,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 172 [2022-11-02 20:09:15,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:10:11,748 INFO L130 PetriNetUnfolder]: 75298/151513 cut-off events. [2022-11-02 20:10:11,749 INFO L131 PetriNetUnfolder]: For 167859/171045 co-relation queries the response was YES. [2022-11-02 20:10:12,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 396304 conditions, 151513 events. 75298/151513 cut-off events. For 167859/171045 co-relation queries the response was YES. Maximal size of possible extension queue 6107. Compared 1834425 event pairs, 6055 based on Foata normal form. 1143/150352 useless extension candidates. Maximal degree in co-relation 396280. Up to 24942 conditions per place. [2022-11-02 20:10:13,563 INFO L137 encePairwiseOnDemand]: 149/172 looper letters, 858 selfloop transitions, 293 changer transitions 655/1879 dead transitions. [2022-11-02 20:10:13,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 1879 transitions, 11602 flow [2022-11-02 20:10:13,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-11-02 20:10:13,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2022-11-02 20:10:13,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 10305 transitions. [2022-11-02 20:10:13,601 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.53975487115022 [2022-11-02 20:10:13,601 INFO L72 ComplementDD]: Start complementDD. Operand 111 states and 10305 transitions. [2022-11-02 20:10:13,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 10305 transitions. [2022-11-02 20:10:13,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:10:13,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 111 states and 10305 transitions. [2022-11-02 20:10:13,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 112 states, 111 states have (on average 92.83783783783784) internal successors, (10305), 111 states have internal predecessors, (10305), 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) [2022-11-02 20:10:13,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 112 states, 112 states have (on average 172.0) internal successors, (19264), 112 states have internal predecessors, (19264), 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) [2022-11-02 20:10:13,685 INFO L81 ComplementDD]: Finished complementDD. Result has 112 states, 112 states have (on average 172.0) internal successors, (19264), 112 states have internal predecessors, (19264), 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) [2022-11-02 20:10:13,685 INFO L175 Difference]: Start difference. First operand has 185 places, 172 transitions, 551 flow. Second operand 111 states and 10305 transitions. [2022-11-02 20:10:13,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 1879 transitions, 11602 flow [2022-11-02 20:10:15,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 1879 transitions, 11088 flow, removed 257 selfloop flow, removed 7 redundant places. [2022-11-02 20:10:15,127 INFO L231 Difference]: Finished difference. Result has 373 places, 513 transitions, 3860 flow [2022-11-02 20:10:15,127 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=111, PETRI_FLOW=3860, PETRI_PLACES=373, PETRI_TRANSITIONS=513} [2022-11-02 20:10:15,128 INFO L287 CegarLoopForPetriNet]: 156 programPoint places, 217 predicate places. [2022-11-02 20:10:15,128 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 513 transitions, 3860 flow [2022-11-02 20:10:15,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 84.18604651162791) internal successors, (3620), 43 states have internal predecessors, (3620), 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) [2022-11-02 20:10:15,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:10:15,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:15,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-02 20:10:15,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:15,337 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:10:15,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:15,338 INFO L85 PathProgramCache]: Analyzing trace with hash 2055242808, now seen corresponding path program 3 times [2022-11-02 20:10:15,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:15,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699396527] [2022-11-02 20:10:15,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:15,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:16,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:10:16,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:16,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699396527] [2022-11-02 20:10:16,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699396527] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:10:16,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512650750] [2022-11-02 20:10:16,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:10:16,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:16,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:10:16,750 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:10:16,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30124380-98dc-47e9-ac19-f79ef269027d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:10:16,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:10:16,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:10:16,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 20:10:16,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:18,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:10:18,022 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-02 20:10:18,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:10:18,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-02 20:10:18,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:10:18,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:10:18,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:10:20,275 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 243 treesize of output 211 [2022-11-02 20:10:20,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 196 [2022-11-02 20:10:20,309 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 184 [2022-11-02 20:10:20,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 180 [2022-11-02 20:10:20,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 178 [2022-11-02 20:10:20,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:10:20,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512650750] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:10:20,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:10:20,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20, 20] total 42 [2022-11-02 20:10:20,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009290231] [2022-11-02 20:10:20,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:10:20,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-02 20:10:20,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:20,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-02 20:10:20,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1504, Unknown=25, NotChecked=0, Total=1722 [2022-11-02 20:10:20,934 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 172 [2022-11-02 20:10:20,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 513 transitions, 3860 flow. Second operand has 42 states, 42 states have (on average 89.38095238095238) internal successors, (3754), 42 states have internal predecessors, (3754), 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) [2022-11-02 20:10:20,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:10:20,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 172 [2022-11-02 20:10:20,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:10:26,024 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset))) (and (forall ((v_ArrVal_272 (Array Int Int)) (v_ArrVal_273 (Array Int Int))) (let ((.cse0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_272) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_273) c_~A~0.base) c_~A~0.offset))) (or (<= 2147483647 .cse0) (<= .cse1 (+ .cse0 1)) (< .cse0 c_~max~0)))) (= c_~max~0 c_~min~0) (or (<= .cse1 (+ c_~max~0 1)) (<= 2147483647 c_~max~0) (forall ((v_ArrVal_272 (Array Int Int)) (v_ArrVal_273 (Array Int Int))) (not (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_272) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_273) c_~A~0.base) c_~A~0.offset) c_~max~0)))))) is different from false