./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c --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_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/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_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/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_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/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 c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f --- 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 19:49:17,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:49:17,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:49:17,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:49:17,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:49:17,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:49:17,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:49:17,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:49:17,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:49:17,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:49:17,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:49:17,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:49:17,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:49:17,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:49:17,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:49:17,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:49:17,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:49:17,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:49:17,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:49:17,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:49:17,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:49:17,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:49:17,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:49:17,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:49:17,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:49:17,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:49:17,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:49:17,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:49:17,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:49:17,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:49:17,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:49:17,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:49:17,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:49:17,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:49:17,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:49:17,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:49:17,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:49:17,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:49:17,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:49:17,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:49:17,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:49:17,335 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:49:17,357 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:49:17,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:49:17,357 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:49:17,358 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:49:17,358 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:49:17,359 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:49:17,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:49:17,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:49:17,360 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:49:17,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:49:17,360 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:49:17,360 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:49:17,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:49:17,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:49:17,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:49:17,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:49:17,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:49:17,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:49:17,362 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:49:17,362 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:49:17,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:49:17,362 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:49:17,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:49:17,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:49:17,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:49:17,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:49:17,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:49:17,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:49:17,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:49:17,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:49:17,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:49:17,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:49:17,364 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:49:17,364 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:49:17,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:49:17,365 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_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f [2022-11-18 19:49:17,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:49:17,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:49:17,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:49:17,624 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:49:17,624 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:49:17,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2022-11-18 19:49:17,721 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/data/06f9827ec/679621504eea4a0b9a1e35b4f338f88e/FLAG4f8bd131d [2022-11-18 19:49:18,177 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:49:18,178 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2022-11-18 19:49:18,185 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/data/06f9827ec/679621504eea4a0b9a1e35b4f338f88e/FLAG4f8bd131d [2022-11-18 19:49:18,552 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/data/06f9827ec/679621504eea4a0b9a1e35b4f338f88e [2022-11-18 19:49:18,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:49:18,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:49:18,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:49:18,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:49:18,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:49:18,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:49:18" (1/1) ... [2022-11-18 19:49:18,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b28b8b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:18, skipping insertion in model container [2022-11-18 19:49:18,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:49:18" (1/1) ... [2022-11-18 19:49:18,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:49:18,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:49:18,833 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_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c[2695,2708] [2022-11-18 19:49:18,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:49:18,866 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:49:18,906 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_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c[2695,2708] [2022-11-18 19:49:18,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:49:18,937 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:49:18,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:18 WrapperNode [2022-11-18 19:49:18,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:49:18,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:49:18,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:49:18,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:49:18,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:18" (1/1) ... [2022-11-18 19:49:18,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:18" (1/1) ... [2022-11-18 19:49:19,018 INFO L138 Inliner]: procedures = 25, calls = 37, calls flagged for inlining = 15, calls inlined = 19, statements flattened = 230 [2022-11-18 19:49:19,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:49:19,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:49:19,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:49:19,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:49:19,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:18" (1/1) ... [2022-11-18 19:49:19,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:18" (1/1) ... [2022-11-18 19:49:19,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:18" (1/1) ... [2022-11-18 19:49:19,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:18" (1/1) ... [2022-11-18 19:49:19,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:18" (1/1) ... [2022-11-18 19:49:19,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:18" (1/1) ... [2022-11-18 19:49:19,063 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:18" (1/1) ... [2022-11-18 19:49:19,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:18" (1/1) ... [2022-11-18 19:49:19,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:49:19,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:49:19,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:49:19,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:49:19,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:18" (1/1) ... [2022-11-18 19:49:19,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:49:19,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:19,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:49:19,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:49:19,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:49:19,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:49:19,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:49:19,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:49:19,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:49:19,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:49:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:49:19,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:49:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:49:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:49:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:49:19,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:49:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:49:19,171 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 19:49:19,350 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:49:19,352 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:49:19,819 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:49:19,831 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:49:19,832 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 19:49:19,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:49:19 BoogieIcfgContainer [2022-11-18 19:49:19,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:49:19,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:49:19,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:49:19,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:49:19,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:49:18" (1/3) ... [2022-11-18 19:49:19,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105c015d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:49:19, skipping insertion in model container [2022-11-18 19:49:19,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:49:18" (2/3) ... [2022-11-18 19:49:19,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105c015d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:49:19, skipping insertion in model container [2022-11-18 19:49:19,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:49:19" (3/3) ... [2022-11-18 19:49:19,844 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2022-11-18 19:49:19,854 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:49:19,865 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:49:19,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-18 19:49:19,866 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:49:20,084 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 19:49:20,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 321 transitions, 658 flow [2022-11-18 19:49:20,415 INFO L130 PetriNetUnfolder]: 25/319 cut-off events. [2022-11-18 19:49:20,415 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 19:49:20,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 319 events. 25/319 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 538 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 200. Up to 2 conditions per place. [2022-11-18 19:49:20,432 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 321 transitions, 658 flow [2022-11-18 19:49:20,451 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 284 transitions, 577 flow [2022-11-18 19:49:20,478 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:49:20,490 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;@5ecaa2ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:49:20,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-18 19:49:20,506 INFO L130 PetriNetUnfolder]: 3/56 cut-off events. [2022-11-18 19:49:20,506 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:49:20,506 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:20,507 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] [2022-11-18 19:49:20,508 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:49:20,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:20,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1917978742, now seen corresponding path program 1 times [2022-11-18 19:49:20,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:20,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003959039] [2022-11-18 19:49:20,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:20,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:20,921 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 19:49:20,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:20,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003959039] [2022-11-18 19:49:20,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003959039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:20,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:20,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:49:20,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937908267] [2022-11-18 19:49:20,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:20,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:49:20,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:20,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:49:20,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:49:20,991 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-18 19:49:20,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 284 transitions, 577 flow. Second operand has 4 states, 4 states have (on average 276.5) internal successors, (1106), 4 states have internal predecessors, (1106), 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 19:49:20,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:20,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-18 19:49:20,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:21,218 INFO L130 PetriNetUnfolder]: 15/474 cut-off events. [2022-11-18 19:49:21,218 INFO L131 PetriNetUnfolder]: For 10/12 co-relation queries the response was YES. [2022-11-18 19:49:21,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 474 events. 15/474 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1443 event pairs, 0 based on Foata normal form. 26/432 useless extension candidates. Maximal degree in co-relation 357. Up to 29 conditions per place. [2022-11-18 19:49:21,227 INFO L137 encePairwiseOnDemand]: 294/321 looper letters, 38 selfloop transitions, 9 changer transitions 4/290 dead transitions. [2022-11-18 19:49:21,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 290 transitions, 692 flow [2022-11-18 19:49:21,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:49:21,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:49:21,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1450 transitions. [2022-11-18 19:49:21,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9034267912772586 [2022-11-18 19:49:21,247 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1450 transitions. [2022-11-18 19:49:21,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1450 transitions. [2022-11-18 19:49:21,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:21,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1450 transitions. [2022-11-18 19:49:21,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 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 19:49:21,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 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 19:49:21,271 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 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 19:49:21,273 INFO L175 Difference]: Start difference. First operand has 269 places, 284 transitions, 577 flow. Second operand 5 states and 1450 transitions. [2022-11-18 19:49:21,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 290 transitions, 692 flow [2022-11-18 19:49:21,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 290 transitions, 682 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:49:21,286 INFO L231 Difference]: Finished difference. Result has 273 places, 273 transitions, 603 flow [2022-11-18 19:49:21,289 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=603, PETRI_PLACES=273, PETRI_TRANSITIONS=273} [2022-11-18 19:49:21,294 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 4 predicate places. [2022-11-18 19:49:21,295 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 273 transitions, 603 flow [2022-11-18 19:49:21,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.5) internal successors, (1106), 4 states have internal predecessors, (1106), 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 19:49:21,296 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:21,297 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:21,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:49:21,298 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:49:21,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:21,299 INFO L85 PathProgramCache]: Analyzing trace with hash -128227480, now seen corresponding path program 1 times [2022-11-18 19:49:21,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:21,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009588145] [2022-11-18 19:49:21,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:21,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:21,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:21,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:21,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009588145] [2022-11-18 19:49:21,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009588145] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:21,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340467587] [2022-11-18 19:49:21,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:21,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:21,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:21,568 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:21,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:49:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:21,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:49:21,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:21,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:21,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:21,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340467587] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:21,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:21,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:49:21,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018941620] [2022-11-18 19:49:21,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:21,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:49:21,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:21,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:49:21,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:49:21,919 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-18 19:49:21,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 273 transitions, 603 flow. Second operand has 12 states, 12 states have (on average 277.6666666666667) internal successors, (3332), 12 states have internal predecessors, (3332), 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 19:49:21,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:21,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-18 19:49:21,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:22,518 INFO L130 PetriNetUnfolder]: 36/1086 cut-off events. [2022-11-18 19:49:22,518 INFO L131 PetriNetUnfolder]: For 32/37 co-relation queries the response was YES. [2022-11-18 19:49:22,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 1086 events. 36/1086 cut-off events. For 32/37 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5644 event pairs, 0 based on Foata normal form. 6/942 useless extension candidates. Maximal degree in co-relation 820. Up to 22 conditions per place. [2022-11-18 19:49:22,534 INFO L137 encePairwiseOnDemand]: 306/321 looper letters, 71 selfloop transitions, 40 changer transitions 0/350 dead transitions. [2022-11-18 19:49:22,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 350 transitions, 1045 flow [2022-11-18 19:49:22,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:49:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:49:22,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5067 transitions. [2022-11-18 19:49:22,545 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8769470404984424 [2022-11-18 19:49:22,545 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5067 transitions. [2022-11-18 19:49:22,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5067 transitions. [2022-11-18 19:49:22,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:22,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5067 transitions. [2022-11-18 19:49:22,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 281.5) internal successors, (5067), 18 states have internal predecessors, (5067), 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 19:49:22,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 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 19:49:22,575 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 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 19:49:22,575 INFO L175 Difference]: Start difference. First operand has 273 places, 273 transitions, 603 flow. Second operand 18 states and 5067 transitions. [2022-11-18 19:49:22,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 350 transitions, 1045 flow [2022-11-18 19:49:22,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 350 transitions, 1040 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:49:22,584 INFO L231 Difference]: Finished difference. Result has 289 places, 300 transitions, 836 flow [2022-11-18 19:49:22,585 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=836, PETRI_PLACES=289, PETRI_TRANSITIONS=300} [2022-11-18 19:49:22,586 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 20 predicate places. [2022-11-18 19:49:22,586 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 300 transitions, 836 flow [2022-11-18 19:49:22,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 277.6666666666667) internal successors, (3332), 12 states have internal predecessors, (3332), 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 19:49:22,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:22,589 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:22,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 19:49:22,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:22,795 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:49:22,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:22,797 INFO L85 PathProgramCache]: Analyzing trace with hash 319915979, now seen corresponding path program 1 times [2022-11-18 19:49:22,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:22,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463508204] [2022-11-18 19:49:22,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:22,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:22,991 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:22,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:22,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463508204] [2022-11-18 19:49:22,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463508204] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:22,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352422859] [2022-11-18 19:49:22,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:22,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:22,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:22,996 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:23,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:49:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:23,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:49:23,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:23,164 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:23,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:49:23,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352422859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:23,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:49:23,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:49:23,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194396529] [2022-11-18 19:49:23,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:23,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:49:23,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:23,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:49:23,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:49:23,175 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-18 19:49:23,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 300 transitions, 836 flow. Second operand has 6 states, 6 states have (on average 277.3333333333333) internal successors, (1664), 6 states have internal predecessors, (1664), 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 19:49:23,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:23,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-18 19:49:23,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:23,523 INFO L130 PetriNetUnfolder]: 36/1078 cut-off events. [2022-11-18 19:49:23,523 INFO L131 PetriNetUnfolder]: For 126/131 co-relation queries the response was YES. [2022-11-18 19:49:23,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1307 conditions, 1078 events. 36/1078 cut-off events. For 126/131 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5616 event pairs, 0 based on Foata normal form. 8/936 useless extension candidates. Maximal degree in co-relation 1013. Up to 44 conditions per place. [2022-11-18 19:49:23,558 INFO L137 encePairwiseOnDemand]: 310/321 looper letters, 39 selfloop transitions, 27 changer transitions 0/305 dead transitions. [2022-11-18 19:49:23,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 305 transitions, 948 flow [2022-11-18 19:49:23,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:49:23,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:49:23,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1972 transitions. [2022-11-18 19:49:23,564 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8776145972407655 [2022-11-18 19:49:23,564 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1972 transitions. [2022-11-18 19:49:23,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1972 transitions. [2022-11-18 19:49:23,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:23,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1972 transitions. [2022-11-18 19:49:23,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.7142857142857) internal successors, (1972), 7 states have internal predecessors, (1972), 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 19:49:23,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 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 19:49:23,577 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 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 19:49:23,577 INFO L175 Difference]: Start difference. First operand has 289 places, 300 transitions, 836 flow. Second operand 7 states and 1972 transitions. [2022-11-18 19:49:23,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 305 transitions, 948 flow [2022-11-18 19:49:23,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 305 transitions, 874 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-18 19:49:23,589 INFO L231 Difference]: Finished difference. Result has 284 places, 292 transitions, 762 flow [2022-11-18 19:49:23,589 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=762, PETRI_PLACES=284, PETRI_TRANSITIONS=292} [2022-11-18 19:49:23,590 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 15 predicate places. [2022-11-18 19:49:23,590 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 292 transitions, 762 flow [2022-11-18 19:49:23,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 277.3333333333333) internal successors, (1664), 6 states have internal predecessors, (1664), 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 19:49:23,592 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:23,592 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:23,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:23,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:23,797 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:49:23,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:23,798 INFO L85 PathProgramCache]: Analyzing trace with hash -456402698, now seen corresponding path program 2 times [2022-11-18 19:49:23,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:23,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116938860] [2022-11-18 19:49:23,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:23,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:24,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:24,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116938860] [2022-11-18 19:49:24,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116938860] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:24,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387718131] [2022-11-18 19:49:24,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:49:24,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:24,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:24,136 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:24,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:49:24,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:49:24,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:24,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:49:24,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:24,367 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 19:49:24,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 19:49:24,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387718131] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:24,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:24,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-18 19:49:24,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372679478] [2022-11-18 19:49:24,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:24,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:49:24,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:24,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:49:24,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:49:24,533 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 321 [2022-11-18 19:49:24,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 292 transitions, 762 flow. Second operand has 18 states, 18 states have (on average 269.0) internal successors, (4842), 18 states have internal predecessors, (4842), 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 19:49:24,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:24,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 321 [2022-11-18 19:49:24,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:25,274 INFO L130 PetriNetUnfolder]: 43/1266 cut-off events. [2022-11-18 19:49:25,274 INFO L131 PetriNetUnfolder]: For 114/120 co-relation queries the response was YES. [2022-11-18 19:49:25,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1508 conditions, 1266 events. 43/1266 cut-off events. For 114/120 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 7003 event pairs, 0 based on Foata normal form. 2/1088 useless extension candidates. Maximal degree in co-relation 1020. Up to 14 conditions per place. [2022-11-18 19:49:25,289 INFO L137 encePairwiseOnDemand]: 305/321 looper letters, 83 selfloop transitions, 43 changer transitions 0/355 dead transitions. [2022-11-18 19:49:25,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 355 transitions, 1170 flow [2022-11-18 19:49:25,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:49:25,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 19:49:25,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5428 transitions. [2022-11-18 19:49:25,300 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8454828660436137 [2022-11-18 19:49:25,300 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5428 transitions. [2022-11-18 19:49:25,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5428 transitions. [2022-11-18 19:49:25,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:25,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5428 transitions. [2022-11-18 19:49:25,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 271.4) internal successors, (5428), 20 states have internal predecessors, (5428), 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 19:49:25,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 321.0) internal successors, (6741), 21 states have internal predecessors, (6741), 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 19:49:25,328 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 321.0) internal successors, (6741), 21 states have internal predecessors, (6741), 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 19:49:25,329 INFO L175 Difference]: Start difference. First operand has 284 places, 292 transitions, 762 flow. Second operand 20 states and 5428 transitions. [2022-11-18 19:49:25,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 355 transitions, 1170 flow [2022-11-18 19:49:25,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 355 transitions, 1117 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-18 19:49:25,337 INFO L231 Difference]: Finished difference. Result has 293 places, 295 transitions, 808 flow [2022-11-18 19:49:25,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=808, PETRI_PLACES=293, PETRI_TRANSITIONS=295} [2022-11-18 19:49:25,338 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 24 predicate places. [2022-11-18 19:49:25,339 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 295 transitions, 808 flow [2022-11-18 19:49:25,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 269.0) internal successors, (4842), 18 states have internal predecessors, (4842), 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 19:49:25,341 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:25,341 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:25,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:25,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:25,547 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:49:25,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:25,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1112198204, now seen corresponding path program 1 times [2022-11-18 19:49:25,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:25,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475610280] [2022-11-18 19:49:25,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:25,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:25,665 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 19:49:25,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:25,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475610280] [2022-11-18 19:49:25,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475610280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:25,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:25,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:49:25,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610574414] [2022-11-18 19:49:25,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:25,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:49:25,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:25,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:49:25,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:49:25,679 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-18 19:49:25,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 295 transitions, 808 flow. Second operand has 5 states, 5 states have (on average 278.4) internal successors, (1392), 5 states have internal predecessors, (1392), 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 19:49:25,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:25,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-18 19:49:25,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:25,946 INFO L130 PetriNetUnfolder]: 36/1080 cut-off events. [2022-11-18 19:49:25,946 INFO L131 PetriNetUnfolder]: For 148/153 co-relation queries the response was YES. [2022-11-18 19:49:25,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1305 conditions, 1080 events. 36/1080 cut-off events. For 148/153 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5430 event pairs, 0 based on Foata normal form. 2/942 useless extension candidates. Maximal degree in co-relation 203. Up to 74 conditions per place. [2022-11-18 19:49:25,958 INFO L137 encePairwiseOnDemand]: 311/321 looper letters, 41 selfloop transitions, 12 changer transitions 0/298 dead transitions. [2022-11-18 19:49:25,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 298 transitions, 919 flow [2022-11-18 19:49:25,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:49:25,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:49:25,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1412 transitions. [2022-11-18 19:49:25,963 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8797507788161993 [2022-11-18 19:49:25,964 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1412 transitions. [2022-11-18 19:49:25,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1412 transitions. [2022-11-18 19:49:25,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:25,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1412 transitions. [2022-11-18 19:49:25,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 282.4) internal successors, (1412), 5 states have internal predecessors, (1412), 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 19:49:25,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 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 19:49:25,972 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 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 19:49:25,972 INFO L175 Difference]: Start difference. First operand has 293 places, 295 transitions, 808 flow. Second operand 5 states and 1412 transitions. [2022-11-18 19:49:25,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 298 transitions, 919 flow [2022-11-18 19:49:25,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 298 transitions, 828 flow, removed 4 selfloop flow, removed 15 redundant places. [2022-11-18 19:49:25,980 INFO L231 Difference]: Finished difference. Result has 283 places, 294 transitions, 742 flow [2022-11-18 19:49:25,981 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=742, PETRI_PLACES=283, PETRI_TRANSITIONS=294} [2022-11-18 19:49:25,984 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 14 predicate places. [2022-11-18 19:49:25,984 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 294 transitions, 742 flow [2022-11-18 19:49:25,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.4) internal successors, (1392), 5 states have internal predecessors, (1392), 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 19:49:25,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:25,985 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:25,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:49:25,986 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:49:25,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:25,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1555439820, now seen corresponding path program 1 times [2022-11-18 19:49:25,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:25,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410519788] [2022-11-18 19:49:25,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:25,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:26,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:49:26,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:26,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410519788] [2022-11-18 19:49:26,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410519788] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:26,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808538868] [2022-11-18 19:49:26,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:26,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:26,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:26,201 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:26,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:49:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:26,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:49:26,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:49:26,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:26,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:49:26,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808538868] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:26,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:26,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 19:49:26,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853574896] [2022-11-18 19:49:26,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:26,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:49:26,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:26,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:49:26,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:49:26,536 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 321 [2022-11-18 19:49:26,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 294 transitions, 742 flow. Second operand has 15 states, 15 states have (on average 268.6666666666667) internal successors, (4030), 15 states have internal predecessors, (4030), 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 19:49:26,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:26,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 321 [2022-11-18 19:49:26,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:26,887 INFO L130 PetriNetUnfolder]: 22/708 cut-off events. [2022-11-18 19:49:26,888 INFO L131 PetriNetUnfolder]: For 44/47 co-relation queries the response was YES. [2022-11-18 19:49:26,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 708 events. 22/708 cut-off events. For 44/47 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2634 event pairs, 0 based on Foata normal form. 4/628 useless extension candidates. Maximal degree in co-relation 648. Up to 38 conditions per place. [2022-11-18 19:49:26,895 INFO L137 encePairwiseOnDemand]: 305/321 looper letters, 51 selfloop transitions, 30 changer transitions 0/310 dead transitions. [2022-11-18 19:49:26,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 310 transitions, 946 flow [2022-11-18 19:49:26,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:49:26,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:49:26,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2982 transitions. [2022-11-18 19:49:26,901 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8445199660152931 [2022-11-18 19:49:26,902 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2982 transitions. [2022-11-18 19:49:26,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2982 transitions. [2022-11-18 19:49:26,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:26,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2982 transitions. [2022-11-18 19:49:26,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 271.09090909090907) internal successors, (2982), 11 states have internal predecessors, (2982), 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 19:49:26,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 321.0) internal successors, (3852), 12 states have internal predecessors, (3852), 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 19:49:26,916 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 321.0) internal successors, (3852), 12 states have internal predecessors, (3852), 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 19:49:26,916 INFO L175 Difference]: Start difference. First operand has 283 places, 294 transitions, 742 flow. Second operand 11 states and 2982 transitions. [2022-11-18 19:49:26,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 310 transitions, 946 flow [2022-11-18 19:49:26,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 310 transitions, 926 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:49:26,923 INFO L231 Difference]: Finished difference. Result has 292 places, 294 transitions, 821 flow [2022-11-18 19:49:26,924 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=821, PETRI_PLACES=292, PETRI_TRANSITIONS=294} [2022-11-18 19:49:26,924 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 23 predicate places. [2022-11-18 19:49:26,925 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 294 transitions, 821 flow [2022-11-18 19:49:26,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 268.6666666666667) internal successors, (4030), 15 states have internal predecessors, (4030), 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 19:49:26,926 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:26,927 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:26,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 19:49:27,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:27,132 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:49:27,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:27,133 INFO L85 PathProgramCache]: Analyzing trace with hash -994690636, now seen corresponding path program 2 times [2022-11-18 19:49:27,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:27,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202249438] [2022-11-18 19:49:27,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:27,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:27,414 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:49:27,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:27,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202249438] [2022-11-18 19:49:27,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202249438] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:27,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942901146] [2022-11-18 19:49:27,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:49:27,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:27,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:27,416 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:27,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:49:27,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:49:27,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:27,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:49:27,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:27,796 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:49:27,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:27,968 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:49:27,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942901146] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:27,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:27,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-18 19:49:27,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883797872] [2022-11-18 19:49:27,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:27,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:49:27,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:27,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:49:27,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:49:27,979 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 321 [2022-11-18 19:49:27,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 294 transitions, 821 flow. Second operand has 22 states, 22 states have (on average 268.77272727272725) internal successors, (5913), 22 states have internal predecessors, (5913), 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 19:49:27,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:27,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 321 [2022-11-18 19:49:27,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:28,445 INFO L130 PetriNetUnfolder]: 8/336 cut-off events. [2022-11-18 19:49:28,446 INFO L131 PetriNetUnfolder]: For 102/103 co-relation queries the response was YES. [2022-11-18 19:49:28,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 336 events. 8/336 cut-off events. For 102/103 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 336 event pairs, 0 based on Foata normal form. 4/312 useless extension candidates. Maximal degree in co-relation 192. Up to 18 conditions per place. [2022-11-18 19:49:28,448 INFO L137 encePairwiseOnDemand]: 305/321 looper letters, 57 selfloop transitions, 34 changer transitions 0/320 dead transitions. [2022-11-18 19:49:28,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 320 transitions, 1085 flow [2022-11-18 19:49:28,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:49:28,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 19:49:28,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4600 transitions. [2022-11-18 19:49:28,458 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8429540040315191 [2022-11-18 19:49:28,458 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4600 transitions. [2022-11-18 19:49:28,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4600 transitions. [2022-11-18 19:49:28,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:28,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4600 transitions. [2022-11-18 19:49:28,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 270.5882352941176) internal successors, (4600), 17 states have internal predecessors, (4600), 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 19:49:28,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 321.0) internal successors, (5778), 18 states have internal predecessors, (5778), 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 19:49:28,481 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 321.0) internal successors, (5778), 18 states have internal predecessors, (5778), 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 19:49:28,481 INFO L175 Difference]: Start difference. First operand has 292 places, 294 transitions, 821 flow. Second operand 17 states and 4600 transitions. [2022-11-18 19:49:28,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 320 transitions, 1085 flow [2022-11-18 19:49:28,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 320 transitions, 1030 flow, removed 6 selfloop flow, removed 9 redundant places. [2022-11-18 19:49:28,488 INFO L231 Difference]: Finished difference. Result has 301 places, 292 transitions, 848 flow [2022-11-18 19:49:28,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=848, PETRI_PLACES=301, PETRI_TRANSITIONS=292} [2022-11-18 19:49:28,490 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 32 predicate places. [2022-11-18 19:49:28,490 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 292 transitions, 848 flow [2022-11-18 19:49:28,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 268.77272727272725) internal successors, (5913), 22 states have internal predecessors, (5913), 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 19:49:28,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:28,492 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:28,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:28,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:28,703 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:49:28,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:28,704 INFO L85 PathProgramCache]: Analyzing trace with hash -973220812, now seen corresponding path program 3 times [2022-11-18 19:49:28,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:28,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307052135] [2022-11-18 19:49:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:28,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:31,136 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 27 proven. 68 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-18 19:49:31,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:31,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307052135] [2022-11-18 19:49:31,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307052135] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:31,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618284513] [2022-11-18 19:49:31,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:49:31,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:31,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:31,140 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:31,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:49:31,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 19:49:31,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:31,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-18 19:49:31,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:31,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:49:31,961 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-18 19:49:31,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 28 [2022-11-18 19:49:32,279 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-18 19:49:32,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-11-18 19:49:32,595 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-18 19:49:32,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-11-18 19:49:32,848 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-18 19:49:32,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-11-18 19:49:33,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:33,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:49:33,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:49:33,458 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-18 19:49:33,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:33,632 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_233 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_233) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2022-11-18 19:49:33,765 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_233 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_233) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 9223372039002259456)) is different from false [2022-11-18 19:49:33,771 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_233 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_233) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456)) is different from false [2022-11-18 19:50:14,643 INFO L321 Elim1Store]: treesize reduction 280, result has 34.1 percent of original size [2022-11-18 19:50:14,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 155 [2022-11-18 19:50:14,727 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:50:14,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 154 treesize of output 230 [2022-11-18 19:50:15,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 19:50:17,771 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-18 19:50:17,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618284513] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:17,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:17,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 27, 30] total 73 [2022-11-18 19:50:17,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641003660] [2022-11-18 19:50:17,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:17,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-11-18 19:50:17,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:17,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-11-18 19:50:17,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=4506, Unknown=35, NotChecked=420, Total=5402 [2022-11-18 19:50:17,792 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 321 [2022-11-18 19:50:17,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 292 transitions, 848 flow. Second operand has 74 states, 74 states have (on average 209.47297297297297) internal successors, (15501), 74 states have internal predecessors, (15501), 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 19:50:17,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:50:17,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 321 [2022-11-18 19:50:17,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:50:23,429 INFO L130 PetriNetUnfolder]: 996/4440 cut-off events. [2022-11-18 19:50:23,430 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2022-11-18 19:50:23,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6507 conditions, 4440 events. 996/4440 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 39032 event pairs, 168 based on Foata normal form. 0/3669 useless extension candidates. Maximal degree in co-relation 6081. Up to 451 conditions per place. [2022-11-18 19:50:23,474 INFO L137 encePairwiseOnDemand]: 287/321 looper letters, 261 selfloop transitions, 62 changer transitions 0/495 dead transitions. [2022-11-18 19:50:23,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 495 transitions, 1925 flow [2022-11-18 19:50:23,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 19:50:23,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-18 19:50:23,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 8544 transitions. [2022-11-18 19:50:23,491 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6654205607476635 [2022-11-18 19:50:23,492 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 8544 transitions. [2022-11-18 19:50:23,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 8544 transitions. [2022-11-18 19:50:23,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:50:23,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 8544 transitions. [2022-11-18 19:50:23,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 213.6) internal successors, (8544), 40 states have internal predecessors, (8544), 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 19:50:23,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 321.0) internal successors, (13161), 41 states have internal predecessors, (13161), 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 19:50:23,538 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 321.0) internal successors, (13161), 41 states have internal predecessors, (13161), 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 19:50:23,539 INFO L175 Difference]: Start difference. First operand has 301 places, 292 transitions, 848 flow. Second operand 40 states and 8544 transitions. [2022-11-18 19:50:23,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 495 transitions, 1925 flow [2022-11-18 19:50:23,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 495 transitions, 1857 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-18 19:50:23,553 INFO L231 Difference]: Finished difference. Result has 343 places, 327 transitions, 1099 flow [2022-11-18 19:50:23,554 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=1099, PETRI_PLACES=343, PETRI_TRANSITIONS=327} [2022-11-18 19:50:23,556 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 74 predicate places. [2022-11-18 19:50:23,556 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 327 transitions, 1099 flow [2022-11-18 19:50:23,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 209.47297297297297) internal successors, (15501), 74 states have internal predecessors, (15501), 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 19:50:23,562 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:50:23,562 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:50:23,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:23,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 19:50:23,770 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:50:23,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:23,771 INFO L85 PathProgramCache]: Analyzing trace with hash -105073289, now seen corresponding path program 1 times [2022-11-18 19:50:23,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:23,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393841914] [2022-11-18 19:50:23,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:23,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:23,936 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 19:50:23,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:23,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393841914] [2022-11-18 19:50:23,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393841914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:23,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:23,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:50:23,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942908031] [2022-11-18 19:50:23,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:23,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:50:23,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:23,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:50:23,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:50:23,940 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 321 [2022-11-18 19:50:23,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 327 transitions, 1099 flow. Second operand has 4 states, 4 states have (on average 277.75) internal successors, (1111), 4 states have internal predecessors, (1111), 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 19:50:23,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:50:23,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 321 [2022-11-18 19:50:23,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:50:24,419 INFO L130 PetriNetUnfolder]: 118/1566 cut-off events. [2022-11-18 19:50:24,419 INFO L131 PetriNetUnfolder]: For 333/334 co-relation queries the response was YES. [2022-11-18 19:50:24,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2400 conditions, 1566 events. 118/1566 cut-off events. For 333/334 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 9521 event pairs, 30 based on Foata normal form. 12/1362 useless extension candidates. Maximal degree in co-relation 2089. Up to 141 conditions per place. [2022-11-18 19:50:24,433 INFO L137 encePairwiseOnDemand]: 314/321 looper letters, 42 selfloop transitions, 8 changer transitions 0/336 dead transitions. [2022-11-18 19:50:24,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 336 transitions, 1210 flow [2022-11-18 19:50:24,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:50:24,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:50:24,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1144 transitions. [2022-11-18 19:50:24,436 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8909657320872274 [2022-11-18 19:50:24,436 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1144 transitions. [2022-11-18 19:50:24,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1144 transitions. [2022-11-18 19:50:24,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:50:24,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1144 transitions. [2022-11-18 19:50:24,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 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 19:50:24,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 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 19:50:24,443 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 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 19:50:24,443 INFO L175 Difference]: Start difference. First operand has 343 places, 327 transitions, 1099 flow. Second operand 4 states and 1144 transitions. [2022-11-18 19:50:24,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 336 transitions, 1210 flow [2022-11-18 19:50:24,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 336 transitions, 1181 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-18 19:50:24,454 INFO L231 Difference]: Finished difference. Result has 336 places, 326 transitions, 1100 flow [2022-11-18 19:50:24,455 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1100, PETRI_PLACES=336, PETRI_TRANSITIONS=326} [2022-11-18 19:50:24,455 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 67 predicate places. [2022-11-18 19:50:24,456 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 326 transitions, 1100 flow [2022-11-18 19:50:24,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.75) internal successors, (1111), 4 states have internal predecessors, (1111), 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 19:50:24,456 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:50:24,457 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:50:24,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:50:24,457 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:50:24,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:24,458 INFO L85 PathProgramCache]: Analyzing trace with hash 2025122299, now seen corresponding path program 1 times [2022-11-18 19:50:24,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:24,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802226686] [2022-11-18 19:50:24,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:24,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 11 proven. 79 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-18 19:50:27,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:27,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802226686] [2022-11-18 19:50:27,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802226686] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:27,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956497969] [2022-11-18 19:50:27,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:27,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:27,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:27,255 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:27,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:50:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:27,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-18 19:50:27,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:28,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 19:50:28,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:50:28,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:50:28,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:50:28,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:50:29,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:50:29,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:50:29,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:50:29,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:50:29,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:50:29,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:50:29,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:50:29,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:50:29,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:50:30,042 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 48 proven. 47 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-18 19:50:30,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:30,265 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_339 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_339) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2022-11-18 19:50:32,558 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_339 (Array Int Int)) (v_ArrVal_338 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_338) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_339) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 9223372039002259456)) is different from false [2022-11-18 19:52:06,531 INFO L321 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-18 19:52:06,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 74 [2022-11-18 19:52:06,547 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:52:06,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 120 [2022-11-18 19:52:06,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2022-11-18 19:52:06,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2022-11-18 19:52:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 37 proven. 53 refuted. 5 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-18 19:52:25,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956497969] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:25,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:25,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 29] total 72 [2022-11-18 19:52:25,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143626407] [2022-11-18 19:52:25,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:25,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-11-18 19:52:25,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:25,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-11-18 19:52:25,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=476, Invalid=4404, Unknown=98, NotChecked=278, Total=5256 [2022-11-18 19:52:25,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 321 [2022-11-18 19:52:25,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 326 transitions, 1100 flow. Second operand has 73 states, 73 states have (on average 215.21917808219177) internal successors, (15711), 73 states have internal predecessors, (15711), 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 19:52:25,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:52:25,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 321 [2022-11-18 19:52:25,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:52:32,420 INFO L130 PetriNetUnfolder]: 1675/6318 cut-off events. [2022-11-18 19:52:32,420 INFO L131 PetriNetUnfolder]: For 2203/2206 co-relation queries the response was YES. [2022-11-18 19:52:32,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11102 conditions, 6318 events. 1675/6318 cut-off events. For 2203/2206 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 56593 event pairs, 134 based on Foata normal form. 7/5430 useless extension candidates. Maximal degree in co-relation 10693. Up to 870 conditions per place. [2022-11-18 19:52:32,468 INFO L137 encePairwiseOnDemand]: 282/321 looper letters, 203 selfloop transitions, 73 changer transitions 0/457 dead transitions. [2022-11-18 19:52:32,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 457 transitions, 2079 flow [2022-11-18 19:52:32,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 19:52:32,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-18 19:52:32,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 8722 transitions. [2022-11-18 19:52:32,481 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6792834890965732 [2022-11-18 19:52:32,481 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 8722 transitions. [2022-11-18 19:52:32,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 8722 transitions. [2022-11-18 19:52:32,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:52:32,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 8722 transitions. [2022-11-18 19:52:32,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 218.05) internal successors, (8722), 40 states have internal predecessors, (8722), 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 19:52:32,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 321.0) internal successors, (13161), 41 states have internal predecessors, (13161), 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 19:52:32,522 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 321.0) internal successors, (13161), 41 states have internal predecessors, (13161), 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 19:52:32,523 INFO L175 Difference]: Start difference. First operand has 336 places, 326 transitions, 1100 flow. Second operand 40 states and 8722 transitions. [2022-11-18 19:52:32,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 457 transitions, 2079 flow [2022-11-18 19:52:32,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 457 transitions, 2079 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:52:32,541 INFO L231 Difference]: Finished difference. Result has 384 places, 341 transitions, 1415 flow [2022-11-18 19:52:32,542 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=1415, PETRI_PLACES=384, PETRI_TRANSITIONS=341} [2022-11-18 19:52:32,542 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 115 predicate places. [2022-11-18 19:52:32,543 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 341 transitions, 1415 flow [2022-11-18 19:52:32,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 215.21917808219177) internal successors, (15711), 73 states have internal predecessors, (15711), 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 19:52:32,547 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:52:32,548 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:32,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:32,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:52:32,763 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:52:32,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:32,764 INFO L85 PathProgramCache]: Analyzing trace with hash 2030672635, now seen corresponding path program 1 times [2022-11-18 19:52:32,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:32,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936292556] [2022-11-18 19:52:32,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:32,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 11 proven. 108 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-18 19:52:36,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:36,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936292556] [2022-11-18 19:52:36,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936292556] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:36,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998017955] [2022-11-18 19:52:36,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:36,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:36,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:36,420 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:36,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:52:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:36,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-18 19:52:36,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:36,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:52:36,746 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:52:36,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 19:52:37,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 19:52:37,487 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-18 19:52:37,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:52:37,805 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-18 19:52:37,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:52:38,137 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-18 19:52:38,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:52:38,466 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-18 19:52:38,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:52:39,229 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-18 19:52:39,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:52:39,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:52:39,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:52:39,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:52:39,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:52:40,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:52:40,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:52:40,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:52:40,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:52:40,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:52:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 48 proven. 76 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-18 19:52:40,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:40,867 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_422 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_422) c_~o_0~0.base) c_~o_0~0.offset) 9223372039002259456)) is different from false [2022-11-18 19:52:45,608 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_421 (Array Int Int)) (v_ArrVal_420 (Array Int Int)) (v_ArrVal_422 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc19#1.base| v_ArrVal_420) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_421) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_422) c_~o_0~0.base) c_~o_0~0.offset) 9223372039002259456)) is different from false [2022-11-18 19:54:13,297 INFO L321 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-18 19:54:13,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 56 treesize of output 77 [2022-11-18 19:54:13,321 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:54:13,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1954 treesize of output 1892 [2022-11-18 19:54:13,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1878 treesize of output 1750 [2022-11-18 19:54:13,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1750 treesize of output 1718 [2022-11-18 19:54:13,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1718 treesize of output 1654 [2022-11-18 19:55:19,163 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 19:55:19,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 18 [2022-11-18 19:55:19,264 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 37 proven. 82 refuted. 5 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-18 19:55:19,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998017955] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:55:19,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:55:19,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 32] total 83 [2022-11-18 19:55:19,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987334192] [2022-11-18 19:55:19,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:55:19,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-11-18 19:55:19,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:19,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-11-18 19:55:19,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=482, Invalid=6074, Unknown=94, NotChecked=322, Total=6972 [2022-11-18 19:55:19,282 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 321 [2022-11-18 19:55:19,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 341 transitions, 1415 flow. Second operand has 84 states, 84 states have (on average 212.38095238095238) internal successors, (17840), 84 states have internal predecessors, (17840), 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 19:55:19,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:19,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 321 [2022-11-18 19:55:19,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:32,731 INFO L130 PetriNetUnfolder]: 6785/22145 cut-off events. [2022-11-18 19:55:32,731 INFO L131 PetriNetUnfolder]: For 8030/8153 co-relation queries the response was YES. [2022-11-18 19:55:32,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38818 conditions, 22145 events. 6785/22145 cut-off events. For 8030/8153 co-relation queries the response was YES. Maximal size of possible extension queue 1047. Compared 262463 event pairs, 1463 based on Foata normal form. 2/17919 useless extension candidates. Maximal degree in co-relation 38479. Up to 2891 conditions per place. [2022-11-18 19:55:32,955 INFO L137 encePairwiseOnDemand]: 290/321 looper letters, 208 selfloop transitions, 52 changer transitions 0/468 dead transitions. [2022-11-18 19:55:32,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 468 transitions, 2306 flow [2022-11-18 19:55:32,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-18 19:55:32,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-18 19:55:32,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 9210 transitions. [2022-11-18 19:55:32,967 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6672462508150402 [2022-11-18 19:55:32,967 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 9210 transitions. [2022-11-18 19:55:32,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 9210 transitions. [2022-11-18 19:55:32,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:32,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 9210 transitions. [2022-11-18 19:55:32,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 214.1860465116279) internal successors, (9210), 43 states have internal predecessors, (9210), 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 19:55:33,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 321.0) internal successors, (14124), 44 states have internal predecessors, (14124), 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 19:55:33,134 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 321.0) internal successors, (14124), 44 states have internal predecessors, (14124), 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 19:55:33,134 INFO L175 Difference]: Start difference. First operand has 384 places, 341 transitions, 1415 flow. Second operand 43 states and 9210 transitions. [2022-11-18 19:55:33,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 468 transitions, 2306 flow [2022-11-18 19:55:33,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 468 transitions, 2209 flow, removed 22 selfloop flow, removed 18 redundant places. [2022-11-18 19:55:33,160 INFO L231 Difference]: Finished difference. Result has 417 places, 357 transitions, 1529 flow [2022-11-18 19:55:33,160 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1334, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1529, PETRI_PLACES=417, PETRI_TRANSITIONS=357} [2022-11-18 19:55:33,162 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 148 predicate places. [2022-11-18 19:55:33,162 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 357 transitions, 1529 flow [2022-11-18 19:55:33,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 212.38095238095238) internal successors, (17840), 84 states have internal predecessors, (17840), 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 19:55:33,168 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:33,168 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:55:33,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:33,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 19:55:33,375 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:55:33,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:33,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1473656865, now seen corresponding path program 1 times [2022-11-18 19:55:33,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:33,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596948096] [2022-11-18 19:55:33,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:33,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 19:55:33,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:33,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596948096] [2022-11-18 19:55:33,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596948096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:33,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:33,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:55:33,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864422502] [2022-11-18 19:55:33,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:33,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:55:33,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:33,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:55:33,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:55:33,528 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 321 [2022-11-18 19:55:33,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 357 transitions, 1529 flow. Second operand has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 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 19:55:33,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:33,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 321 [2022-11-18 19:55:33,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:35,745 INFO L130 PetriNetUnfolder]: 677/4737 cut-off events. [2022-11-18 19:55:35,745 INFO L131 PetriNetUnfolder]: For 1572/1581 co-relation queries the response was YES. [2022-11-18 19:55:35,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7360 conditions, 4737 events. 677/4737 cut-off events. For 1572/1581 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 51840 event pairs, 270 based on Foata normal form. 48/3763 useless extension candidates. Maximal degree in co-relation 7063. Up to 692 conditions per place. [2022-11-18 19:55:35,810 INFO L137 encePairwiseOnDemand]: 314/321 looper letters, 36 selfloop transitions, 6 changer transitions 0/366 dead transitions. [2022-11-18 19:55:35,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 366 transitions, 1627 flow [2022-11-18 19:55:35,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:55:35,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:55:35,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1143 transitions. [2022-11-18 19:55:35,813 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8901869158878505 [2022-11-18 19:55:35,814 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1143 transitions. [2022-11-18 19:55:35,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1143 transitions. [2022-11-18 19:55:35,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:35,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1143 transitions. [2022-11-18 19:55:35,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.75) internal successors, (1143), 4 states have internal predecessors, (1143), 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 19:55:35,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 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 19:55:35,822 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 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 19:55:35,822 INFO L175 Difference]: Start difference. First operand has 417 places, 357 transitions, 1529 flow. Second operand 4 states and 1143 transitions. [2022-11-18 19:55:35,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 366 transitions, 1627 flow [2022-11-18 19:55:35,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 366 transitions, 1520 flow, removed 5 selfloop flow, removed 30 redundant places. [2022-11-18 19:55:35,839 INFO L231 Difference]: Finished difference. Result has 392 places, 357 transitions, 1448 flow [2022-11-18 19:55:35,839 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1448, PETRI_PLACES=392, PETRI_TRANSITIONS=357} [2022-11-18 19:55:35,840 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 123 predicate places. [2022-11-18 19:55:35,840 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 357 transitions, 1448 flow [2022-11-18 19:55:35,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 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 19:55:35,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:35,841 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:55:35,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:55:35,842 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:55:35,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:35,842 INFO L85 PathProgramCache]: Analyzing trace with hash 2001462622, now seen corresponding path program 1 times [2022-11-18 19:55:35,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:35,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965692986] [2022-11-18 19:55:35,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:35,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:36,005 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 19:55:36,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:36,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965692986] [2022-11-18 19:55:36,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965692986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:36,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:36,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:55:36,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179596214] [2022-11-18 19:55:36,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:36,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:55:36,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:36,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:55:36,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:55:36,009 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 321 [2022-11-18 19:55:36,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 357 transitions, 1448 flow. Second operand has 4 states, 4 states have (on average 278.25) internal successors, (1113), 4 states have internal predecessors, (1113), 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 19:55:36,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:36,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 321 [2022-11-18 19:55:36,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:37,406 INFO L130 PetriNetUnfolder]: 174/3420 cut-off events. [2022-11-18 19:55:37,406 INFO L131 PetriNetUnfolder]: For 1127/1132 co-relation queries the response was YES. [2022-11-18 19:55:37,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5245 conditions, 3420 events. 174/3420 cut-off events. For 1127/1132 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 26002 event pairs, 35 based on Foata normal form. 9/2968 useless extension candidates. Maximal degree in co-relation 4986. Up to 173 conditions per place. [2022-11-18 19:55:37,444 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 48 selfloop transitions, 7 changer transitions 0/367 dead transitions. [2022-11-18 19:55:37,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 367 transitions, 1587 flow [2022-11-18 19:55:37,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:55:37,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:55:37,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1142 transitions. [2022-11-18 19:55:37,447 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8894080996884736 [2022-11-18 19:55:37,447 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1142 transitions. [2022-11-18 19:55:37,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1142 transitions. [2022-11-18 19:55:37,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:37,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1142 transitions. [2022-11-18 19:55:37,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.5) internal successors, (1142), 4 states have internal predecessors, (1142), 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 19:55:37,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 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 19:55:37,453 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 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 19:55:37,453 INFO L175 Difference]: Start difference. First operand has 392 places, 357 transitions, 1448 flow. Second operand 4 states and 1142 transitions. [2022-11-18 19:55:37,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 367 transitions, 1587 flow [2022-11-18 19:55:37,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 367 transitions, 1580 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:55:37,472 INFO L231 Difference]: Finished difference. Result has 395 places, 357 transitions, 1466 flow [2022-11-18 19:55:37,473 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1466, PETRI_PLACES=395, PETRI_TRANSITIONS=357} [2022-11-18 19:55:37,473 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 126 predicate places. [2022-11-18 19:55:37,474 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 357 transitions, 1466 flow [2022-11-18 19:55:37,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.25) internal successors, (1113), 4 states have internal predecessors, (1113), 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 19:55:37,474 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:37,474 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:55:37,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:55:37,475 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:55:37,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:37,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1915799966, now seen corresponding path program 1 times [2022-11-18 19:55:37,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:37,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023778073] [2022-11-18 19:55:37,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:37,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 11 proven. 79 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-18 19:55:39,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:39,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023778073] [2022-11-18 19:55:39,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023778073] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:39,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118442703] [2022-11-18 19:55:39,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:39,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:39,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:39,735 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:39,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:55:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:39,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 19:55:39,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:40,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 19:55:40,512 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-18 19:55:40,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:55:40,809 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-18 19:55:40,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:55:41,029 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-18 19:55:41,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:55:41,275 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-18 19:55:41,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:55:41,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:41,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:55:41,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-18 19:55:41,853 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 48 proven. 47 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-18 19:55:41,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:42,102 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_555 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_555) c_~o_2~0.base) c_~o_2~0.offset) 4294967296))) is different from false [2022-11-18 19:55:42,133 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_555 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_555) |c_ULTIMATE.start_main_#t~ret10#1.base|) |c_ULTIMATE.start_main_#t~ret10#1.offset|) 4294967296))) is different from false [2022-11-18 19:55:42,143 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_555 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_555) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 4294967296))) is different from false [2022-11-18 19:57:25,834 INFO L321 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-18 19:57:25,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 52 treesize of output 73 [2022-11-18 19:57:25,846 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:57:25,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2022-11-18 19:57:46,425 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 42 proven. 53 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-18 19:57:46,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118442703] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:46,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:57:46,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 27] total 69 [2022-11-18 19:57:46,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213536246] [2022-11-18 19:57:46,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:46,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-11-18 19:57:46,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:46,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-11-18 19:57:46,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=3935, Unknown=100, NotChecked=396, Total=4830 [2022-11-18 19:57:46,440 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 321 [2022-11-18 19:57:46,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 357 transitions, 1466 flow. Second operand has 70 states, 70 states have (on average 217.42857142857142) internal successors, (15220), 70 states have internal predecessors, (15220), 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 19:57:46,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:46,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 321 [2022-11-18 19:57:46,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:05,711 INFO L130 PetriNetUnfolder]: 6914/44953 cut-off events. [2022-11-18 19:58:05,711 INFO L131 PetriNetUnfolder]: For 18955/18958 co-relation queries the response was YES. [2022-11-18 19:58:06,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72326 conditions, 44953 events. 6914/44953 cut-off events. For 18955/18958 co-relation queries the response was YES. Maximal size of possible extension queue 844. Compared 635943 event pairs, 3056 based on Foata normal form. 2/38150 useless extension candidates. Maximal degree in co-relation 71995. Up to 5562 conditions per place. [2022-11-18 19:58:06,190 INFO L137 encePairwiseOnDemand]: 281/321 looper letters, 225 selfloop transitions, 100 changer transitions 0/517 dead transitions. [2022-11-18 19:58:06,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 517 transitions, 2705 flow [2022-11-18 19:58:06,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-18 19:58:06,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-11-18 19:58:06,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 13123 transitions. [2022-11-18 19:58:06,218 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6813603322949118 [2022-11-18 19:58:06,218 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 13123 transitions. [2022-11-18 19:58:06,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 13123 transitions. [2022-11-18 19:58:06,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:06,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 13123 transitions. [2022-11-18 19:58:06,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 218.71666666666667) internal successors, (13123), 60 states have internal predecessors, (13123), 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 19:58:06,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 321.0) internal successors, (19581), 61 states have internal predecessors, (19581), 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 19:58:06,288 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 321.0) internal successors, (19581), 61 states have internal predecessors, (19581), 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 19:58:06,289 INFO L175 Difference]: Start difference. First operand has 395 places, 357 transitions, 1466 flow. Second operand 60 states and 13123 transitions. [2022-11-18 19:58:06,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 517 transitions, 2705 flow [2022-11-18 19:58:06,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 517 transitions, 2671 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-11-18 19:58:06,417 INFO L231 Difference]: Finished difference. Result has 456 places, 374 transitions, 1784 flow [2022-11-18 19:58:06,418 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=1784, PETRI_PLACES=456, PETRI_TRANSITIONS=374} [2022-11-18 19:58:06,418 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 187 predicate places. [2022-11-18 19:58:06,419 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 374 transitions, 1784 flow [2022-11-18 19:58:06,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 217.42857142857142) internal successors, (15220), 70 states have internal predecessors, (15220), 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 19:58:06,421 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:06,421 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:06,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:06,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 19:58:06,627 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:58:06,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:06,628 INFO L85 PathProgramCache]: Analyzing trace with hash -581847871, now seen corresponding path program 1 times [2022-11-18 19:58:06,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:06,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598242862] [2022-11-18 19:58:06,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:06,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:06,758 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 19:58:06,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:06,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598242862] [2022-11-18 19:58:06,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598242862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:06,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:06,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:06,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265317019] [2022-11-18 19:58:06,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:06,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:06,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:06,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:06,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:06,763 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 321 [2022-11-18 19:58:06,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 374 transitions, 1784 flow. Second operand has 4 states, 4 states have (on average 278.5) internal successors, (1114), 4 states have internal predecessors, (1114), 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 19:58:06,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:06,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 321 [2022-11-18 19:58:06,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:08,096 INFO L130 PetriNetUnfolder]: 193/3555 cut-off events. [2022-11-18 19:58:08,096 INFO L131 PetriNetUnfolder]: For 1688/1693 co-relation queries the response was YES. [2022-11-18 19:58:08,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5718 conditions, 3555 events. 193/3555 cut-off events. For 1688/1693 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 27462 event pairs, 54 based on Foata normal form. 8/3092 useless extension candidates. Maximal degree in co-relation 5416. Up to 223 conditions per place. [2022-11-18 19:58:08,137 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 53 selfloop transitions, 7 changer transitions 0/382 dead transitions. [2022-11-18 19:58:08,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 382 transitions, 1933 flow [2022-11-18 19:58:08,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:58:08,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:58:08,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1140 transitions. [2022-11-18 19:58:08,139 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8878504672897196 [2022-11-18 19:58:08,139 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1140 transitions. [2022-11-18 19:58:08,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1140 transitions. [2022-11-18 19:58:08,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:08,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1140 transitions. [2022-11-18 19:58:08,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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 19:58:08,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 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 19:58:08,144 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 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 19:58:08,145 INFO L175 Difference]: Start difference. First operand has 456 places, 374 transitions, 1784 flow. Second operand 4 states and 1140 transitions. [2022-11-18 19:58:08,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 382 transitions, 1933 flow [2022-11-18 19:58:08,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 382 transitions, 1763 flow, removed 10 selfloop flow, removed 52 redundant places. [2022-11-18 19:58:08,169 INFO L231 Difference]: Finished difference. Result has 408 places, 373 transitions, 1648 flow [2022-11-18 19:58:08,170 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1648, PETRI_PLACES=408, PETRI_TRANSITIONS=373} [2022-11-18 19:58:08,170 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 139 predicate places. [2022-11-18 19:58:08,171 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 373 transitions, 1648 flow [2022-11-18 19:58:08,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.5) internal successors, (1114), 4 states have internal predecessors, (1114), 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 19:58:08,171 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:08,171 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:08,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:58:08,172 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:58:08,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:08,172 INFO L85 PathProgramCache]: Analyzing trace with hash -325545307, now seen corresponding path program 1 times [2022-11-18 19:58:08,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:08,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662510873] [2022-11-18 19:58:08,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:08,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 27 proven. 158 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:58:12,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:12,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662510873] [2022-11-18 19:58:12,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662510873] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:12,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057309599] [2022-11-18 19:58:12,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:12,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:12,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:12,707 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:12,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:58:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:12,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-18 19:58:12,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:13,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 19:58:14,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:14,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:58:14,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:14,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:58:14,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:14,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:58:14,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:14,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:58:15,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:15,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:58:15,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:15,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:58:15,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-18 19:58:15,802 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 48 proven. 47 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-18 19:58:15,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:18,626 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_661 (Array Int Int)) (v_ArrVal_660 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_660) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_661) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 4294967296))) is different from false [2022-11-18 19:59:56,724 INFO L321 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-18 19:59:56,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 55 treesize of output 76 [2022-11-18 19:59:56,736 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:59:56,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 136 [2022-11-18 19:59:56,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 118 [2022-11-18 19:59:56,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2022-11-18 20:00:17,820 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 40 proven. 53 refuted. 2 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-18 20:00:17,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057309599] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:00:17,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:00:17,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 26, 29] total 81 [2022-11-18 20:00:17,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402100333] [2022-11-18 20:00:17,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:00:17,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-11-18 20:00:17,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:17,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-11-18 20:00:17,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=5830, Unknown=119, NotChecked=158, Total=6642 [2022-11-18 20:00:17,834 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 321 [2022-11-18 20:00:17,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 373 transitions, 1648 flow. Second operand has 82 states, 82 states have (on average 215.52439024390245) internal successors, (17673), 82 states have internal predecessors, (17673), 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 20:00:17,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:00:17,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 321 [2022-11-18 20:00:17,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:00:34,344 INFO L130 PetriNetUnfolder]: 6924/31667 cut-off events. [2022-11-18 20:00:34,344 INFO L131 PetriNetUnfolder]: For 20859/20862 co-relation queries the response was YES. [2022-11-18 20:00:34,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57025 conditions, 31667 events. 6924/31667 cut-off events. For 20859/20862 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 410497 event pairs, 1094 based on Foata normal form. 29/26904 useless extension candidates. Maximal degree in co-relation 56689. Up to 3275 conditions per place. [2022-11-18 20:00:34,674 INFO L137 encePairwiseOnDemand]: 281/321 looper letters, 244 selfloop transitions, 96 changer transitions 0/533 dead transitions. [2022-11-18 20:00:34,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 533 transitions, 2861 flow [2022-11-18 20:00:34,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 20:00:34,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 20:00:34,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 9637 transitions. [2022-11-18 20:00:34,685 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6823137921268763 [2022-11-18 20:00:34,685 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 9637 transitions. [2022-11-18 20:00:34,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 9637 transitions. [2022-11-18 20:00:34,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:00:34,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 9637 transitions. [2022-11-18 20:00:34,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 219.02272727272728) internal successors, (9637), 44 states have internal predecessors, (9637), 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 20:00:34,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 321.0) internal successors, (14445), 45 states have internal predecessors, (14445), 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 20:00:34,715 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 321.0) internal successors, (14445), 45 states have internal predecessors, (14445), 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 20:00:34,715 INFO L175 Difference]: Start difference. First operand has 408 places, 373 transitions, 1648 flow. Second operand 44 states and 9637 transitions. [2022-11-18 20:00:34,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 533 transitions, 2861 flow [2022-11-18 20:00:34,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 533 transitions, 2851 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:00:34,864 INFO L231 Difference]: Finished difference. Result has 452 places, 375 transitions, 1878 flow [2022-11-18 20:00:34,864 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1642, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1878, PETRI_PLACES=452, PETRI_TRANSITIONS=375} [2022-11-18 20:00:34,865 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 183 predicate places. [2022-11-18 20:00:34,865 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 375 transitions, 1878 flow [2022-11-18 20:00:34,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 215.52439024390245) internal successors, (17673), 82 states have internal predecessors, (17673), 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 20:00:34,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:00:34,868 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:34,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:00:35,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:00:35,075 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 20:00:35,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:35,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1630168902, now seen corresponding path program 1 times [2022-11-18 20:00:35,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:35,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101011081] [2022-11-18 20:00:35,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:35,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 20:00:35,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:35,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101011081] [2022-11-18 20:00:35,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101011081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:00:35,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:00:35,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:00:35,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593692754] [2022-11-18 20:00:35,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:35,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:00:35,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:35,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:00:35,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:00:35,209 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 321 [2022-11-18 20:00:35,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 375 transitions, 1878 flow. Second operand has 4 states, 4 states have (on average 278.5) internal successors, (1114), 4 states have internal predecessors, (1114), 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 20:00:35,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:00:35,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 321 [2022-11-18 20:00:35,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:00:36,868 INFO L130 PetriNetUnfolder]: 727/5113 cut-off events. [2022-11-18 20:00:36,868 INFO L131 PetriNetUnfolder]: For 2654/2664 co-relation queries the response was YES. [2022-11-18 20:00:36,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8398 conditions, 5113 events. 727/5113 cut-off events. For 2654/2664 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 57573 event pairs, 240 based on Foata normal form. 26/4048 useless extension candidates. Maximal degree in co-relation 8099. Up to 703 conditions per place. [2022-11-18 20:00:36,924 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 37 selfloop transitions, 5 changer transitions 0/384 dead transitions. [2022-11-18 20:00:36,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 384 transitions, 1982 flow [2022-11-18 20:00:36,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:00:36,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:00:36,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1141 transitions. [2022-11-18 20:00:36,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8886292834890965 [2022-11-18 20:00:36,926 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1141 transitions. [2022-11-18 20:00:36,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1141 transitions. [2022-11-18 20:00:36,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:00:36,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1141 transitions. [2022-11-18 20:00:36,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 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 20:00:36,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 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 20:00:36,932 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 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 20:00:36,932 INFO L175 Difference]: Start difference. First operand has 452 places, 375 transitions, 1878 flow. Second operand 4 states and 1141 transitions. [2022-11-18 20:00:36,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 384 transitions, 1982 flow [2022-11-18 20:00:36,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 384 transitions, 1759 flow, removed 9 selfloop flow, removed 49 redundant places. [2022-11-18 20:00:36,959 INFO L231 Difference]: Finished difference. Result has 407 places, 375 transitions, 1670 flow [2022-11-18 20:00:36,959 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1649, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1670, PETRI_PLACES=407, PETRI_TRANSITIONS=375} [2022-11-18 20:00:36,960 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 138 predicate places. [2022-11-18 20:00:36,960 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 375 transitions, 1670 flow [2022-11-18 20:00:36,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.5) internal successors, (1114), 4 states have internal predecessors, (1114), 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 20:00:36,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:00:36,961 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:36,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:00:36,961 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 20:00:36,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:36,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1625453219, now seen corresponding path program 1 times [2022-11-18 20:00:36,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:36,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557366013] [2022-11-18 20:00:36,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:36,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:40,625 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 27 proven. 97 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-18 20:00:40,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:40,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557366013] [2022-11-18 20:00:40,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557366013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:00:40,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322194724] [2022-11-18 20:00:40,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:40,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:00:40,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:00:40,628 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:00:40,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:00:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:40,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-18 20:00:40,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:00:40,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:00:40,887 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:00:40,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 20:00:40,949 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:00:40,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 20:00:41,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 20:00:41,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:00:41,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:00:42,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:00:42,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:00:42,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:00:42,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:00:42,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:00:42,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:00:43,502 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-18 20:00:43,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:00:43,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:00:43,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:00:44,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:00:44,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:00:44,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:00:44,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:00:44,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:00:45,034 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 48 proven. 76 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-18 20:00:45,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:00:45,556 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_771 (Array Int Int)) (v_ArrVal_772 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_771) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_772) c_~o_0~0.base) c_~o_0~0.offset) 2147483648)) is different from false [2022-11-18 20:00:45,697 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_771 (Array Int Int)) (v_ArrVal_772 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc19#1.base| v_ArrVal_771) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_772) c_~o_0~0.base) c_~o_0~0.offset) 2147483648)) is different from false [2022-11-18 20:02:20,219 INFO L321 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-18 20:02:20,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 74 [2022-11-18 20:02:20,234 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:02:20,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 62 [2022-11-18 20:02:20,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2022-11-18 20:02:20,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2022-11-18 20:02:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 40 proven. 53 refuted. 2 times theorem prover too weak. 66 trivial. 29 not checked. [2022-11-18 20:02:41,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322194724] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:02:41,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:02:41,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 29, 32] total 83 [2022-11-18 20:02:41,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720182774] [2022-11-18 20:02:41,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:41,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-11-18 20:02:41,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:41,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-11-18 20:02:41,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=571, Invalid=6013, Unknown=66, NotChecked=322, Total=6972 [2022-11-18 20:02:41,474 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 321 [2022-11-18 20:02:41,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 375 transitions, 1670 flow. Second operand has 84 states, 84 states have (on average 170.0) internal successors, (14280), 84 states have internal predecessors, (14280), 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 20:02:41,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:02:41,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 321 [2022-11-18 20:02:41,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:03:01,373 INFO L130 PetriNetUnfolder]: 10743/44586 cut-off events. [2022-11-18 20:03:01,374 INFO L131 PetriNetUnfolder]: For 30071/30074 co-relation queries the response was YES. [2022-11-18 20:03:01,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82112 conditions, 44586 events. 10743/44586 cut-off events. For 30071/30074 co-relation queries the response was YES. Maximal size of possible extension queue 1371. Compared 602501 event pairs, 1808 based on Foata normal form. 2/38026 useless extension candidates. Maximal degree in co-relation 81757. Up to 5052 conditions per place. [2022-11-18 20:03:01,839 INFO L137 encePairwiseOnDemand]: 280/321 looper letters, 298 selfloop transitions, 110 changer transitions 0/575 dead transitions. [2022-11-18 20:03:01,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 575 transitions, 3332 flow [2022-11-18 20:03:01,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-18 20:03:01,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2022-11-18 20:03:01,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 10778 transitions. [2022-11-18 20:03:01,855 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5329575236117292 [2022-11-18 20:03:01,855 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 10778 transitions. [2022-11-18 20:03:01,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 10778 transitions. [2022-11-18 20:03:01,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:03:01,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 10778 transitions. [2022-11-18 20:03:01,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 171.0793650793651) internal successors, (10778), 63 states have internal predecessors, (10778), 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 20:03:01,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 321.0) internal successors, (20544), 64 states have internal predecessors, (20544), 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 20:03:01,903 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 321.0) internal successors, (20544), 64 states have internal predecessors, (20544), 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 20:03:01,903 INFO L175 Difference]: Start difference. First operand has 407 places, 375 transitions, 1670 flow. Second operand 63 states and 10778 transitions. [2022-11-18 20:03:01,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 575 transitions, 3332 flow [2022-11-18 20:03:02,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 575 transitions, 3323 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-18 20:03:02,075 INFO L231 Difference]: Finished difference. Result has 476 places, 422 transitions, 2238 flow [2022-11-18 20:03:02,075 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1661, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=2238, PETRI_PLACES=476, PETRI_TRANSITIONS=422} [2022-11-18 20:03:02,075 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 207 predicate places. [2022-11-18 20:03:02,076 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 422 transitions, 2238 flow [2022-11-18 20:03:02,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 170.0) internal successors, (14280), 84 states have internal predecessors, (14280), 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 20:03:02,077 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:03:02,077 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:03:02,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:02,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:03:02,278 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 20:03:02,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:02,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1004370683, now seen corresponding path program 1 times [2022-11-18 20:03:02,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:02,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096878726] [2022-11-18 20:03:02,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:02,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:06,822 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 151 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 20:03:06,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:06,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096878726] [2022-11-18 20:03:06,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096878726] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:06,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702142936] [2022-11-18 20:03:06,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:06,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:06,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:06,824 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:06,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64fbe5e-f75c-46a9-a7a5-0faff939c4dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:03:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:07,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-18 20:03:07,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:07,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:03:07,169 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:03:07,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 20:03:07,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 20:03:07,891 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-18 20:03:07,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 20:03:08,232 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-18 20:03:08,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 20:03:08,579 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-18 20:03:08,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 20:03:08,934 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-18 20:03:08,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 20:03:09,750 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-18 20:03:09,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:03:10,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:03:10,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:03:10,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:03:10,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:03:10,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:03:11,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:11,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:03:11,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:03:11,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-18 20:03:11,511 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 48 proven. 76 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-18 20:03:11,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:12,121 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_854 (Array Int Int)) (v_ArrVal_855 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_854) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_855) c_~o_0~0.base) c_~o_0~0.offset) 4294967296))) is different from false [2022-11-18 20:03:12,200 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_854 (Array Int Int)) (v_ArrVal_853 (Array Int Int)) (v_ArrVal_855 (Array Int Int))) (< 0 (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_853) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_854) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_855) c_~o_0~0.base) c_~o_0~0.offset) 4294967296))) is different from false