./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:28:09,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:28:09,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:28:09,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:28:09,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:28:09,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:28:09,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:28:09,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:28:09,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:28:09,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:28:09,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:28:09,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:28:09,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:28:09,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:28:09,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:28:09,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:28:09,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:28:09,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:28:09,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:28:09,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:28:09,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:28:09,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:28:09,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:28:09,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:28:09,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:28:09,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:28:09,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:28:09,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:28:09,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:28:09,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:28:09,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:28:09,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:28:09,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:28:09,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:28:09,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:28:09,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:28:09,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:28:09,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:28:09,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:28:09,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:28:09,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:28:09,763 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:28:09,808 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:28:09,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:28:09,811 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:28:09,811 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:28:09,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:28:09,813 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:28:09,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:28:09,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:28:09,814 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:28:09,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:28:09,815 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:28:09,815 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:28:09,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:28:09,816 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:28:09,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:28:09,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:28:09,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:28:09,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:28:09,817 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:28:09,817 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:28:09,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:28:09,817 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:28:09,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:28:09,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:28:09,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:28:09,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:28:09,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:28:09,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:28:09,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:28:09,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:28:09,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:28:09,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:28:09,820 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:28:09,820 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:28:09,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:28:09,821 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_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa [2022-11-18 20:28:10,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:28:10,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:28:10,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:28:10,225 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:28:10,226 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:28:10,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2022-11-18 20:28:10,302 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/data/3fed0e595/01631352eae1427eb3bd215f6f40369d/FLAGc0efa7a62 [2022-11-18 20:28:10,932 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:28:10,933 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2022-11-18 20:28:10,958 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/data/3fed0e595/01631352eae1427eb3bd215f6f40369d/FLAGc0efa7a62 [2022-11-18 20:28:11,184 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/data/3fed0e595/01631352eae1427eb3bd215f6f40369d [2022-11-18 20:28:11,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:28:11,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:28:11,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:28:11,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:28:11,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:28:11,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:28:11" (1/1) ... [2022-11-18 20:28:11,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1e5383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:11, skipping insertion in model container [2022-11-18 20:28:11,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:28:11" (1/1) ... [2022-11-18 20:28:11,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:28:11,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:28:11,804 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2022-11-18 20:28:11,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:28:11,938 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:28:11,972 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2022-11-18 20:28:11,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:28:12,040 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:28:12,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:12 WrapperNode [2022-11-18 20:28:12,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:28:12,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:28:12,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:28:12,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:28:12,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:12" (1/1) ... [2022-11-18 20:28:12,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:12" (1/1) ... [2022-11-18 20:28:12,116 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 238 [2022-11-18 20:28:12,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:28:12,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:28:12,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:28:12,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:28:12,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:12" (1/1) ... [2022-11-18 20:28:12,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:12" (1/1) ... [2022-11-18 20:28:12,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:12" (1/1) ... [2022-11-18 20:28:12,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:12" (1/1) ... [2022-11-18 20:28:12,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:12" (1/1) ... [2022-11-18 20:28:12,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:12" (1/1) ... [2022-11-18 20:28:12,168 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:12" (1/1) ... [2022-11-18 20:28:12,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:12" (1/1) ... [2022-11-18 20:28:12,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:28:12,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:28:12,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:28:12,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:28:12,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:12" (1/1) ... [2022-11-18 20:28:12,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:28:12,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:12,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:28:12,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:28:12,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:28:12,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:28:12,269 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-18 20:28:12,270 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-18 20:28:12,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:28:12,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:28:12,272 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-18 20:28:12,272 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-18 20:28:12,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:28:12,273 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:28:12,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:28:12,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:28:12,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:28:12,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:28:12,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:28:12,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:28:12,275 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:28:12,541 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:28:12,544 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:28:13,185 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:28:13,197 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:28:13,198 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-18 20:28:13,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:28:13 BoogieIcfgContainer [2022-11-18 20:28:13,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:28:13,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:28:13,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:28:13,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:28:13,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:28:11" (1/3) ... [2022-11-18 20:28:13,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71eeb6ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:28:13, skipping insertion in model container [2022-11-18 20:28:13,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:12" (2/3) ... [2022-11-18 20:28:13,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71eeb6ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:28:13, skipping insertion in model container [2022-11-18 20:28:13,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:28:13" (3/3) ... [2022-11-18 20:28:13,219 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2022-11-18 20:28:13,233 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:28:13,246 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:28:13,247 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-18 20:28:13,248 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:28:13,458 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 20:28:13,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 265 transitions, 552 flow [2022-11-18 20:28:13,813 INFO L130 PetriNetUnfolder]: 54/494 cut-off events. [2022-11-18 20:28:13,813 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-11-18 20:28:13,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 494 events. 54/494 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2028 event pairs, 0 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 249. Up to 8 conditions per place. [2022-11-18 20:28:13,828 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 265 transitions, 552 flow [2022-11-18 20:28:13,844 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 265 transitions, 552 flow [2022-11-18 20:28:13,861 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:28:13,873 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;@5b101728, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:28:13,874 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-18 20:28:13,889 INFO L130 PetriNetUnfolder]: 5/85 cut-off events. [2022-11-18 20:28:13,889 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:28:13,889 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:28:13,890 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:13,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:28:13,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:13,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1190274131, now seen corresponding path program 1 times [2022-11-18 20:28:13,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:13,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87895582] [2022-11-18 20:28:13,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:13,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:14,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:14,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87895582] [2022-11-18 20:28:14,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87895582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:14,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:14,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:28:14,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312305157] [2022-11-18 20:28:14,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:14,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:28:14,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:14,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:28:14,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:28:14,280 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 265 [2022-11-18 20:28:14,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 265 transitions, 552 flow. Second operand has 2 states, 2 states have (on average 242.0) internal successors, (484), 2 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:14,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:28:14,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 265 [2022-11-18 20:28:14,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:28:14,525 INFO L130 PetriNetUnfolder]: 15/453 cut-off events. [2022-11-18 20:28:14,525 INFO L131 PetriNetUnfolder]: For 33/49 co-relation queries the response was YES. [2022-11-18 20:28:14,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 453 events. 15/453 cut-off events. For 33/49 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1775 event pairs, 0 based on Foata normal form. 57/457 useless extension candidates. Maximal degree in co-relation 216. Up to 12 conditions per place. [2022-11-18 20:28:14,534 INFO L137 encePairwiseOnDemand]: 248/265 looper letters, 6 selfloop transitions, 0 changer transitions 0/247 dead transitions. [2022-11-18 20:28:14,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 247 transitions, 528 flow [2022-11-18 20:28:14,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:28:14,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:28:14,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 505 transitions. [2022-11-18 20:28:14,560 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9528301886792453 [2022-11-18 20:28:14,561 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 505 transitions. [2022-11-18 20:28:14,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 505 transitions. [2022-11-18 20:28:14,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:28:14,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 505 transitions. [2022-11-18 20:28:14,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 252.5) internal successors, (505), 2 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:14,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:14,587 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:14,589 INFO L175 Difference]: Start difference. First operand has 245 places, 265 transitions, 552 flow. Second operand 2 states and 505 transitions. [2022-11-18 20:28:14,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 247 transitions, 528 flow [2022-11-18 20:28:14,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 247 transitions, 528 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:28:14,605 INFO L231 Difference]: Finished difference. Result has 245 places, 247 transitions, 516 flow [2022-11-18 20:28:14,608 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=516, PETRI_PLACES=245, PETRI_TRANSITIONS=247} [2022-11-18 20:28:14,614 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 0 predicate places. [2022-11-18 20:28:14,615 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 247 transitions, 516 flow [2022-11-18 20:28:14,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 242.0) internal successors, (484), 2 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:14,616 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:28:14,616 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:14,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:28:14,617 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:28:14,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:14,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1061191412, now seen corresponding path program 1 times [2022-11-18 20:28:14,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:14,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144337031] [2022-11-18 20:28:14,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:14,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:14,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:14,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144337031] [2022-11-18 20:28:14,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144337031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:14,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:14,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:28:14,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733164701] [2022-11-18 20:28:14,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:14,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:28:14,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:14,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:28:14,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:28:14,806 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 265 [2022-11-18 20:28:14,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 247 transitions, 516 flow. Second operand has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:14,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:28:14,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 265 [2022-11-18 20:28:14,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:28:14,961 INFO L130 PetriNetUnfolder]: 15/472 cut-off events. [2022-11-18 20:28:14,961 INFO L131 PetriNetUnfolder]: For 33/49 co-relation queries the response was YES. [2022-11-18 20:28:14,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 472 events. 15/472 cut-off events. For 33/49 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1765 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 513. Up to 20 conditions per place. [2022-11-18 20:28:14,967 INFO L137 encePairwiseOnDemand]: 262/265 looper letters, 17 selfloop transitions, 2 changer transitions 0/252 dead transitions. [2022-11-18 20:28:14,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 252 transitions, 564 flow [2022-11-18 20:28:14,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:28:14,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:28:14,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 719 transitions. [2022-11-18 20:28:14,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9044025157232705 [2022-11-18 20:28:14,971 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 719 transitions. [2022-11-18 20:28:14,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 719 transitions. [2022-11-18 20:28:14,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:28:14,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 719 transitions. [2022-11-18 20:28:14,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:14,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:14,979 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:14,980 INFO L175 Difference]: Start difference. First operand has 245 places, 247 transitions, 516 flow. Second operand 3 states and 719 transitions. [2022-11-18 20:28:14,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 252 transitions, 564 flow [2022-11-18 20:28:14,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 252 transitions, 564 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:28:14,987 INFO L231 Difference]: Finished difference. Result has 248 places, 248 transitions, 528 flow [2022-11-18 20:28:14,988 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=528, PETRI_PLACES=248, PETRI_TRANSITIONS=248} [2022-11-18 20:28:14,989 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 3 predicate places. [2022-11-18 20:28:14,989 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 248 transitions, 528 flow [2022-11-18 20:28:14,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:14,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:28:14,990 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:14,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:28:14,991 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:28:14,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:14,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1605645399, now seen corresponding path program 1 times [2022-11-18 20:28:14,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:14,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169321583] [2022-11-18 20:28:14,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:14,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:15,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:15,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169321583] [2022-11-18 20:28:15,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169321583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:15,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:15,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:28:15,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055334347] [2022-11-18 20:28:15,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:15,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:28:15,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:15,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:28:15,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:28:15,175 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 265 [2022-11-18 20:28:15,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 248 transitions, 528 flow. Second operand has 4 states, 4 states have (on average 229.75) internal successors, (919), 4 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:15,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:28:15,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 265 [2022-11-18 20:28:15,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:28:15,349 INFO L130 PetriNetUnfolder]: 15/471 cut-off events. [2022-11-18 20:28:15,350 INFO L131 PetriNetUnfolder]: For 34/50 co-relation queries the response was YES. [2022-11-18 20:28:15,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 471 events. 15/471 cut-off events. For 34/50 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1776 event pairs, 0 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 525. Up to 25 conditions per place. [2022-11-18 20:28:15,355 INFO L137 encePairwiseOnDemand]: 259/265 looper letters, 23 selfloop transitions, 4 changer transitions 0/255 dead transitions. [2022-11-18 20:28:15,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 255 transitions, 596 flow [2022-11-18 20:28:15,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:28:15,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:28:15,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1169 transitions. [2022-11-18 20:28:15,359 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8822641509433963 [2022-11-18 20:28:15,360 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1169 transitions. [2022-11-18 20:28:15,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1169 transitions. [2022-11-18 20:28:15,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:28:15,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1169 transitions. [2022-11-18 20:28:15,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.8) internal successors, (1169), 5 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:15,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:15,369 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:15,369 INFO L175 Difference]: Start difference. First operand has 248 places, 248 transitions, 528 flow. Second operand 5 states and 1169 transitions. [2022-11-18 20:28:15,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 255 transitions, 596 flow [2022-11-18 20:28:15,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 255 transitions, 594 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:28:15,376 INFO L231 Difference]: Finished difference. Result has 254 places, 250 transitions, 552 flow [2022-11-18 20:28:15,377 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=552, PETRI_PLACES=254, PETRI_TRANSITIONS=250} [2022-11-18 20:28:15,377 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 9 predicate places. [2022-11-18 20:28:15,378 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 250 transitions, 552 flow [2022-11-18 20:28:15,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 229.75) internal successors, (919), 4 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:15,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:28:15,379 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:15,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:28:15,380 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:28:15,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:15,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1582688669, now seen corresponding path program 1 times [2022-11-18 20:28:15,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:15,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638502836] [2022-11-18 20:28:15,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:15,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:15,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:15,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638502836] [2022-11-18 20:28:15,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638502836] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:15,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150106577] [2022-11-18 20:28:15,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:15,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:15,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:15,550 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:15,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:28:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:28:15,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:15,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:15,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:15,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150106577] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:15,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:15,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:28:15,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371299003] [2022-11-18 20:28:15,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:15,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:28:15,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:15,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:28:15,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:28:15,943 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 265 [2022-11-18 20:28:15,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 250 transitions, 552 flow. Second operand has 10 states, 10 states have (on average 231.0) internal successors, (2310), 10 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:15,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:28:15,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 265 [2022-11-18 20:28:15,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:28:16,226 INFO L130 PetriNetUnfolder]: 15/491 cut-off events. [2022-11-18 20:28:16,226 INFO L131 PetriNetUnfolder]: For 40/56 co-relation queries the response was YES. [2022-11-18 20:28:16,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 491 events. 15/491 cut-off events. For 40/56 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1675 event pairs, 0 based on Foata normal form. 3/444 useless extension candidates. Maximal degree in co-relation 569. Up to 16 conditions per place. [2022-11-18 20:28:16,233 INFO L137 encePairwiseOnDemand]: 257/265 looper letters, 26 selfloop transitions, 11 changer transitions 0/265 dead transitions. [2022-11-18 20:28:16,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 265 transitions, 664 flow [2022-11-18 20:28:16,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:28:16,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:28:16,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2548 transitions. [2022-11-18 20:28:16,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740994854202402 [2022-11-18 20:28:16,240 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2548 transitions. [2022-11-18 20:28:16,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2548 transitions. [2022-11-18 20:28:16,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:28:16,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2548 transitions. [2022-11-18 20:28:16,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 231.63636363636363) internal successors, (2548), 11 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:16,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 265.0) internal successors, (3180), 12 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:16,258 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 265.0) internal successors, (3180), 12 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:16,258 INFO L175 Difference]: Start difference. First operand has 254 places, 250 transitions, 552 flow. Second operand 11 states and 2548 transitions. [2022-11-18 20:28:16,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 265 transitions, 664 flow [2022-11-18 20:28:16,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 265 transitions, 660 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:28:16,264 INFO L231 Difference]: Finished difference. Result has 267 places, 255 transitions, 614 flow [2022-11-18 20:28:16,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=614, PETRI_PLACES=267, PETRI_TRANSITIONS=255} [2022-11-18 20:28:16,266 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 22 predicate places. [2022-11-18 20:28:16,266 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 255 transitions, 614 flow [2022-11-18 20:28:16,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 231.0) internal successors, (2310), 10 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:16,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:28:16,268 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:16,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:16,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:16,477 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:28:16,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:16,477 INFO L85 PathProgramCache]: Analyzing trace with hash 724855385, now seen corresponding path program 1 times [2022-11-18 20:28:16,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:16,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531413635] [2022-11-18 20:28:16,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:16,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:16,752 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:16,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:16,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531413635] [2022-11-18 20:28:16,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531413635] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:16,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964605010] [2022-11-18 20:28:16,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:16,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:16,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:16,759 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:16,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:28:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:16,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:28:16,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:17,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:17,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964605010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:17,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:17,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:28:17,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190281821] [2022-11-18 20:28:17,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:17,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:28:17,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:17,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:28:17,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:28:17,007 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 265 [2022-11-18 20:28:17,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 255 transitions, 614 flow. Second operand has 6 states, 6 states have (on average 230.66666666666666) internal successors, (1384), 6 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:17,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:28:17,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 265 [2022-11-18 20:28:17,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:28:17,209 INFO L130 PetriNetUnfolder]: 15/489 cut-off events. [2022-11-18 20:28:17,209 INFO L131 PetriNetUnfolder]: For 61/77 co-relation queries the response was YES. [2022-11-18 20:28:17,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 489 events. 15/489 cut-off events. For 61/77 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1674 event pairs, 0 based on Foata normal form. 2/441 useless extension candidates. Maximal degree in co-relation 584. Up to 22 conditions per place. [2022-11-18 20:28:17,215 INFO L137 encePairwiseOnDemand]: 260/265 looper letters, 22 selfloop transitions, 8 changer transitions 0/258 dead transitions. [2022-11-18 20:28:17,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 258 transitions, 672 flow [2022-11-18 20:28:17,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:28:17,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:28:17,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1623 transitions. [2022-11-18 20:28:17,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8749326145552561 [2022-11-18 20:28:17,220 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1623 transitions. [2022-11-18 20:28:17,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1623 transitions. [2022-11-18 20:28:17,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:28:17,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1623 transitions. [2022-11-18 20:28:17,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 231.85714285714286) internal successors, (1623), 7 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:17,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 265.0) internal successors, (2120), 8 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:17,231 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 265.0) internal successors, (2120), 8 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:17,231 INFO L175 Difference]: Start difference. First operand has 267 places, 255 transitions, 614 flow. Second operand 7 states and 1623 transitions. [2022-11-18 20:28:17,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 258 transitions, 672 flow [2022-11-18 20:28:17,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 258 transitions, 658 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-18 20:28:17,238 INFO L231 Difference]: Finished difference. Result has 267 places, 253 transitions, 602 flow [2022-11-18 20:28:17,239 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=602, PETRI_PLACES=267, PETRI_TRANSITIONS=253} [2022-11-18 20:28:17,240 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 22 predicate places. [2022-11-18 20:28:17,240 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 253 transitions, 602 flow [2022-11-18 20:28:17,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.66666666666666) internal successors, (1384), 6 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:17,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:28:17,241 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:17,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:17,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:17,448 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:28:17,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:17,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1691615913, now seen corresponding path program 1 times [2022-11-18 20:28:17,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:17,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026880725] [2022-11-18 20:28:17,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:17,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:28:17,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:17,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026880725] [2022-11-18 20:28:17,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026880725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:17,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:17,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:28:17,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545579102] [2022-11-18 20:28:17,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:17,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:28:17,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:17,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:28:17,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:28:17,558 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 265 [2022-11-18 20:28:17,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 253 transitions, 602 flow. Second operand has 4 states, 4 states have (on average 231.75) internal successors, (927), 4 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:17,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:28:17,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 265 [2022-11-18 20:28:17,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:28:17,740 INFO L130 PetriNetUnfolder]: 15/488 cut-off events. [2022-11-18 20:28:17,740 INFO L131 PetriNetUnfolder]: For 62/78 co-relation queries the response was YES. [2022-11-18 20:28:17,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 488 events. 15/488 cut-off events. For 62/78 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1676 event pairs, 0 based on Foata normal form. 1/439 useless extension candidates. Maximal degree in co-relation 581. Up to 17 conditions per place. [2022-11-18 20:28:17,745 INFO L137 encePairwiseOnDemand]: 259/265 looper letters, 13 selfloop transitions, 12 changer transitions 0/253 dead transitions. [2022-11-18 20:28:17,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 253 transitions, 650 flow [2022-11-18 20:28:17,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:28:17,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:28:17,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1159 transitions. [2022-11-18 20:28:17,749 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8747169811320755 [2022-11-18 20:28:17,750 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1159 transitions. [2022-11-18 20:28:17,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1159 transitions. [2022-11-18 20:28:17,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:28:17,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1159 transitions. [2022-11-18 20:28:17,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 231.8) internal successors, (1159), 5 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:17,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:17,758 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:17,759 INFO L175 Difference]: Start difference. First operand has 267 places, 253 transitions, 602 flow. Second operand 5 states and 1159 transitions. [2022-11-18 20:28:17,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 253 transitions, 650 flow [2022-11-18 20:28:17,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 253 transitions, 631 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-18 20:28:17,767 INFO L231 Difference]: Finished difference. Result has 263 places, 253 transitions, 613 flow [2022-11-18 20:28:17,768 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=613, PETRI_PLACES=263, PETRI_TRANSITIONS=253} [2022-11-18 20:28:17,770 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 18 predicate places. [2022-11-18 20:28:17,771 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 253 transitions, 613 flow [2022-11-18 20:28:17,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 231.75) internal successors, (927), 4 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:17,771 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:28:17,772 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:17,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:28:17,772 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:28:17,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:17,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2079168977, now seen corresponding path program 2 times [2022-11-18 20:28:17,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:17,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359916486] [2022-11-18 20:28:17,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:17,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:17,934 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-18 20:28:17,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:17,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359916486] [2022-11-18 20:28:17,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359916486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:17,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:17,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:28:17,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634092289] [2022-11-18 20:28:17,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:17,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:28:17,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:17,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:28:17,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:28:17,937 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 265 [2022-11-18 20:28:17,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 253 transitions, 613 flow. Second operand has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:17,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:28:17,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 265 [2022-11-18 20:28:17,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:28:18,061 INFO L130 PetriNetUnfolder]: 10/371 cut-off events. [2022-11-18 20:28:18,061 INFO L131 PetriNetUnfolder]: For 55/101 co-relation queries the response was YES. [2022-11-18 20:28:18,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 371 events. 10/371 cut-off events. For 55/101 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 918 event pairs, 0 based on Foata normal form. 6/342 useless extension candidates. Maximal degree in co-relation 453. Up to 15 conditions per place. [2022-11-18 20:28:18,065 INFO L137 encePairwiseOnDemand]: 258/265 looper letters, 14 selfloop transitions, 4 changer transitions 0/253 dead transitions. [2022-11-18 20:28:18,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 253 transitions, 649 flow [2022-11-18 20:28:18,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:28:18,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:28:18,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1166 transitions. [2022-11-18 20:28:18,071 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.88 [2022-11-18 20:28:18,071 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1166 transitions. [2022-11-18 20:28:18,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1166 transitions. [2022-11-18 20:28:18,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:28:18,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1166 transitions. [2022-11-18 20:28:18,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.2) internal successors, (1166), 5 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:18,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:18,079 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:18,079 INFO L175 Difference]: Start difference. First operand has 263 places, 253 transitions, 613 flow. Second operand 5 states and 1166 transitions. [2022-11-18 20:28:18,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 253 transitions, 649 flow [2022-11-18 20:28:18,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 253 transitions, 631 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:28:18,086 INFO L231 Difference]: Finished difference. Result has 263 places, 251 transitions, 603 flow [2022-11-18 20:28:18,086 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=603, PETRI_PLACES=263, PETRI_TRANSITIONS=251} [2022-11-18 20:28:18,087 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 18 predicate places. [2022-11-18 20:28:18,087 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 251 transitions, 603 flow [2022-11-18 20:28:18,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:18,088 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:28:18,088 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:18,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:28:18,088 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:28:18,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:18,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1827436408, now seen corresponding path program 1 times [2022-11-18 20:28:18,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:18,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332073081] [2022-11-18 20:28:18,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:18,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:18,369 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:28:18,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:18,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332073081] [2022-11-18 20:28:18,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332073081] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:18,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514344479] [2022-11-18 20:28:18,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:18,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:18,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:18,374 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:18,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:28:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:18,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:28:18,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:18,706 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:28:18,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:18,902 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:28:18,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514344479] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:18,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:18,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 20:28:18,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177371466] [2022-11-18 20:28:18,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:18,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:28:18,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:18,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:28:18,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:28:18,914 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 265 [2022-11-18 20:28:18,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 251 transitions, 603 flow. Second operand has 18 states, 18 states have (on average 231.44444444444446) internal successors, (4166), 18 states have internal predecessors, (4166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:18,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:28:18,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 265 [2022-11-18 20:28:18,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:28:19,321 INFO L130 PetriNetUnfolder]: 10/443 cut-off events. [2022-11-18 20:28:19,321 INFO L131 PetriNetUnfolder]: For 85/99 co-relation queries the response was YES. [2022-11-18 20:28:19,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 443 events. 10/443 cut-off events. For 85/99 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 928 event pairs, 0 based on Foata normal form. 4/413 useless extension candidates. Maximal degree in co-relation 609. Up to 15 conditions per place. [2022-11-18 20:28:19,326 INFO L137 encePairwiseOnDemand]: 259/265 looper letters, 45 selfloop transitions, 21 changer transitions 0/292 dead transitions. [2022-11-18 20:28:19,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 292 transitions, 901 flow [2022-11-18 20:28:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:28:19,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:28:19,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4858 transitions. [2022-11-18 20:28:19,337 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8729559748427673 [2022-11-18 20:28:19,337 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4858 transitions. [2022-11-18 20:28:19,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4858 transitions. [2022-11-18 20:28:19,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:28:19,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4858 transitions. [2022-11-18 20:28:19,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 231.33333333333334) internal successors, (4858), 21 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:19,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 265.0) internal successors, (5830), 22 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:19,381 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 265.0) internal successors, (5830), 22 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:19,381 INFO L175 Difference]: Start difference. First operand has 263 places, 251 transitions, 603 flow. Second operand 21 states and 4858 transitions. [2022-11-18 20:28:19,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 292 transitions, 901 flow [2022-11-18 20:28:19,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 292 transitions, 893 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:28:19,388 INFO L231 Difference]: Finished difference. Result has 284 places, 264 transitions, 751 flow [2022-11-18 20:28:19,391 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=751, PETRI_PLACES=284, PETRI_TRANSITIONS=264} [2022-11-18 20:28:19,392 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 39 predicate places. [2022-11-18 20:28:19,393 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 264 transitions, 751 flow [2022-11-18 20:28:19,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 231.44444444444446) internal successors, (4166), 18 states have internal predecessors, (4166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:19,396 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:28:19,397 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:19,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:19,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:19,604 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:28:19,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:19,604 INFO L85 PathProgramCache]: Analyzing trace with hash -894204588, now seen corresponding path program 2 times [2022-11-18 20:28:19,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:19,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984970133] [2022-11-18 20:28:19,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:19,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:28:20,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:20,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984970133] [2022-11-18 20:28:20,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984970133] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:20,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018916207] [2022-11-18 20:28:20,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:28:20,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:20,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:20,400 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:20,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:28:20,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:28:20,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:20,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:28:20,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:28:20,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:21,470 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:28:21,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018916207] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:21,471 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:21,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-11-18 20:28:21,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136773011] [2022-11-18 20:28:21,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:21,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 20:28:21,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:21,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 20:28:21,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 20:28:21,482 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 265 [2022-11-18 20:28:21,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 264 transitions, 751 flow. Second operand has 34 states, 34 states have (on average 231.7058823529412) internal successors, (7878), 34 states have internal predecessors, (7878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:21,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:28:21,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 265 [2022-11-18 20:28:21,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:28:22,511 INFO L130 PetriNetUnfolder]: 10/587 cut-off events. [2022-11-18 20:28:22,511 INFO L131 PetriNetUnfolder]: For 432/446 co-relation queries the response was YES. [2022-11-18 20:28:22,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 995 conditions, 587 events. 10/587 cut-off events. For 432/446 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 928 event pairs, 0 based on Foata normal form. 8/561 useless extension candidates. Maximal degree in co-relation 978. Up to 19 conditions per place. [2022-11-18 20:28:22,516 INFO L137 encePairwiseOnDemand]: 259/265 looper letters, 85 selfloop transitions, 45 changer transitions 0/356 dead transitions. [2022-11-18 20:28:22,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 356 transitions, 1479 flow [2022-11-18 20:28:22,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 20:28:22,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-18 20:28:22,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 10398 transitions. [2022-11-18 20:28:22,542 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8719496855345912 [2022-11-18 20:28:22,542 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 10398 transitions. [2022-11-18 20:28:22,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 10398 transitions. [2022-11-18 20:28:22,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:28:22,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 10398 transitions. [2022-11-18 20:28:22,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 231.06666666666666) internal successors, (10398), 45 states have internal predecessors, (10398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:22,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 265.0) internal successors, (12190), 46 states have internal predecessors, (12190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:22,598 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 265.0) internal successors, (12190), 46 states have internal predecessors, (12190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:22,599 INFO L175 Difference]: Start difference. First operand has 284 places, 264 transitions, 751 flow. Second operand 45 states and 10398 transitions. [2022-11-18 20:28:22,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 356 transitions, 1479 flow [2022-11-18 20:28:22,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 356 transitions, 1413 flow, removed 26 selfloop flow, removed 7 redundant places. [2022-11-18 20:28:22,609 INFO L231 Difference]: Finished difference. Result has 330 places, 289 transitions, 1053 flow [2022-11-18 20:28:22,609 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1053, PETRI_PLACES=330, PETRI_TRANSITIONS=289} [2022-11-18 20:28:22,610 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 85 predicate places. [2022-11-18 20:28:22,610 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 289 transitions, 1053 flow [2022-11-18 20:28:22,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 231.7058823529412) internal successors, (7878), 34 states have internal predecessors, (7878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:22,613 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:28:22,614 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:22,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:22,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 20:28:22,820 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:28:22,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:22,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1782459660, now seen corresponding path program 3 times [2022-11-18 20:28:22,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:22,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916832626] [2022-11-18 20:28:22,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:22,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:25,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1905 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:28:25,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:25,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916832626] [2022-11-18 20:28:25,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916832626] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:25,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947102245] [2022-11-18 20:28:25,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:28:25,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:25,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:25,299 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:25,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9568bf-30fc-4ddc-b67f-e7f0be876b25/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process