./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN --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 a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 09:32:00,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:32:00,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:32:00,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:32:00,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:32:00,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:32:00,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:32:00,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:32:00,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:32:00,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:32:00,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:32:00,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:32:00,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:32:00,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:32:00,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:32:00,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:32:00,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:32:00,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:32:00,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:32:00,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:32:00,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:32:00,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:32:00,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:32:00,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:32:00,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:32:00,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:32:00,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:32:00,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:32:00,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:32:00,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:32:00,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:32:00,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:32:00,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:32:00,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:32:00,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:32:00,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:32:00,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:32:00,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:32:00,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:32:00,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:32:00,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:32:00,597 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 09:32:00,625 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:32:00,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:32:00,625 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:32:00,626 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:32:00,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:32:00,627 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:32:00,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:32:00,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:32:00,628 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:32:00,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:32:00,629 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:32:00,629 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:32:00,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:32:00,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:32:00,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:32:00,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:32:00,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:32:00,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:32:00,630 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 09:32:00,631 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:32:00,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:32:00,631 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:32:00,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:32:00,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:32:00,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:32:00,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:32:00,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:32:00,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:32:00,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:32:00,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:32:00,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:32:00,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:32:00,633 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:32:00,634 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:32:00,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:32:00,634 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_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df [2022-11-20 09:32:00,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:32:00,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:32:00,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:32:00,958 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:32:00,959 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:32:00,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2022-11-20 09:32:03,989 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:32:04,311 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:32:04,311 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2022-11-20 09:32:04,326 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/data/9630d2a74/3cff0bd93d2d48f4b245a90c65be9fb6/FLAGc844e1c88 [2022-11-20 09:32:04,340 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/data/9630d2a74/3cff0bd93d2d48f4b245a90c65be9fb6 [2022-11-20 09:32:04,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:32:04,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:32:04,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:32:04,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:32:04,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:32:04,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:32:04" (1/1) ... [2022-11-20 09:32:04,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@794aed27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:04, skipping insertion in model container [2022-11-20 09:32:04,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:32:04" (1/1) ... [2022-11-20 09:32:04,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:32:04,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:32:04,873 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 09:32:04,874 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 09:32:04,874 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 09:32:04,875 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 09:32:04,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:32:04,915 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:32:04,974 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 09:32:04,980 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 09:32:04,982 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 09:32:04,983 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 09:32:04,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:32:05,062 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:32:05,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:05 WrapperNode [2022-11-20 09:32:05,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:32:05,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:32:05,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:32:05,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:32:05,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:05" (1/1) ... [2022-11-20 09:32:05,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:05" (1/1) ... [2022-11-20 09:32:05,116 INFO L138 Inliner]: procedures = 272, calls = 35, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 137 [2022-11-20 09:32:05,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:32:05,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:32:05,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:32:05,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:32:05,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:05" (1/1) ... [2022-11-20 09:32:05,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:05" (1/1) ... [2022-11-20 09:32:05,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:05" (1/1) ... [2022-11-20 09:32:05,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:05" (1/1) ... [2022-11-20 09:32:05,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:05" (1/1) ... [2022-11-20 09:32:05,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:05" (1/1) ... [2022-11-20 09:32:05,147 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:05" (1/1) ... [2022-11-20 09:32:05,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:05" (1/1) ... [2022-11-20 09:32:05,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:32:05,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:32:05,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:32:05,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:32:05,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:05" (1/1) ... [2022-11-20 09:32:05,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:32:05,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:05,200 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:32:05,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:32:05,242 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-20 09:32:05,242 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-20 09:32:05,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:32:05,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 09:32:05,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:32:05,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:32:05,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:32:05,243 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 09:32:05,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:32:05,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:32:05,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 09:32:05,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:32:05,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:32:05,245 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 09:32:05,419 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:32:05,421 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:32:05,791 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:32:05,810 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:32:05,811 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 09:32:05,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:32:05 BoogieIcfgContainer [2022-11-20 09:32:05,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:32:05,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:32:05,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:32:05,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:32:05,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:32:04" (1/3) ... [2022-11-20 09:32:05,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9cf7e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:32:05, skipping insertion in model container [2022-11-20 09:32:05,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:05" (2/3) ... [2022-11-20 09:32:05,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9cf7e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:32:05, skipping insertion in model container [2022-11-20 09:32:05,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:32:05" (3/3) ... [2022-11-20 09:32:05,822 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2022-11-20 09:32:05,831 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 09:32:05,839 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:32:05,839 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-20 09:32:05,839 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:32:05,957 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 09:32:05,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 217 transitions, 444 flow [2022-11-20 09:32:06,154 INFO L130 PetriNetUnfolder]: 15/215 cut-off events. [2022-11-20 09:32:06,161 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:32:06,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 215 events. 15/215 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 513 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 156. Up to 2 conditions per place. [2022-11-20 09:32:06,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 217 transitions, 444 flow [2022-11-20 09:32:06,185 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 215 transitions, 436 flow [2022-11-20 09:32:06,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:32:06,208 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;@5b1df7b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:32:06,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-20 09:32:06,229 INFO L130 PetriNetUnfolder]: 3/56 cut-off events. [2022-11-20 09:32:06,236 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:32:06,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:06,240 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] [2022-11-20 09:32:06,241 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:32:06,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:06,247 INFO L85 PathProgramCache]: Analyzing trace with hash -648803015, now seen corresponding path program 1 times [2022-11-20 09:32:06,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:06,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432044098] [2022-11-20 09:32:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:06,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:06,388 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:06,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1109036888] [2022-11-20 09:32:06,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:06,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:06,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:06,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:06,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:32:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:32:06,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:06,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:06,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:06,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:06,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432044098] [2022-11-20 09:32:06,628 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:06,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109036888] [2022-11-20 09:32:06,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109036888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:06,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:06,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:32:06,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000174888] [2022-11-20 09:32:06,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:06,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:32:06,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:06,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:32:06,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:32:06,674 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 217 [2022-11-20 09:32:06,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 215 transitions, 436 flow. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:06,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:06,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 217 [2022-11-20 09:32:06,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:06,782 INFO L130 PetriNetUnfolder]: 7/266 cut-off events. [2022-11-20 09:32:06,782 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 09:32:06,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 266 events. 7/266 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 749 event pairs, 0 based on Foata normal form. 9/247 useless extension candidates. Maximal degree in co-relation 234. Up to 17 conditions per place. [2022-11-20 09:32:06,786 INFO L137 encePairwiseOnDemand]: 203/217 looper letters, 23 selfloop transitions, 2 changer transitions 1/215 dead transitions. [2022-11-20 09:32:06,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 215 transitions, 486 flow [2022-11-20 09:32:06,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:32:06,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 09:32:06,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 615 transitions. [2022-11-20 09:32:06,801 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9447004608294931 [2022-11-20 09:32:06,802 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 615 transitions. [2022-11-20 09:32:06,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 615 transitions. [2022-11-20 09:32:06,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:06,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 615 transitions. [2022-11-20 09:32:06,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:06,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:06,818 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:06,820 INFO L175 Difference]: Start difference. First operand has 207 places, 215 transitions, 436 flow. Second operand 3 states and 615 transitions. [2022-11-20 09:32:06,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 215 transitions, 486 flow [2022-11-20 09:32:06,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 215 transitions, 484 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 09:32:06,829 INFO L231 Difference]: Finished difference. Result has 208 places, 206 transitions, 430 flow [2022-11-20 09:32:06,831 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=430, PETRI_PLACES=208, PETRI_TRANSITIONS=206} [2022-11-20 09:32:06,835 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 1 predicate places. [2022-11-20 09:32:06,835 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 206 transitions, 430 flow [2022-11-20 09:32:06,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:06,836 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:06,836 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] [2022-11-20 09:32:06,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:07,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 09:32:07,042 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:32:07,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:07,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1361942790, now seen corresponding path program 1 times [2022-11-20 09:32:07,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:07,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018822338] [2022-11-20 09:32:07,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:07,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:07,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:07,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:07,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018822338] [2022-11-20 09:32:07,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018822338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:07,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:07,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:07,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221038935] [2022-11-20 09:32:07,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:07,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:32:07,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:07,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:32:07,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:32:07,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 217 [2022-11-20 09:32:07,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 206 transitions, 430 flow. Second operand has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:07,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:07,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 217 [2022-11-20 09:32:07,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:07,341 INFO L130 PetriNetUnfolder]: 7/349 cut-off events. [2022-11-20 09:32:07,341 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 09:32:07,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 349 events. 7/349 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 710 event pairs, 0 based on Foata normal form. 2/323 useless extension candidates. Maximal degree in co-relation 248. Up to 22 conditions per place. [2022-11-20 09:32:07,347 INFO L137 encePairwiseOnDemand]: 212/217 looper letters, 17 selfloop transitions, 2 changer transitions 0/212 dead transitions. [2022-11-20 09:32:07,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 212 transitions, 480 flow [2022-11-20 09:32:07,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:32:07,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 09:32:07,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 607 transitions. [2022-11-20 09:32:07,351 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9324116743471582 [2022-11-20 09:32:07,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 607 transitions. [2022-11-20 09:32:07,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 607 transitions. [2022-11-20 09:32:07,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:07,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 607 transitions. [2022-11-20 09:32:07,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:07,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:07,358 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:07,358 INFO L175 Difference]: Start difference. First operand has 208 places, 206 transitions, 430 flow. Second operand 3 states and 607 transitions. [2022-11-20 09:32:07,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 212 transitions, 480 flow [2022-11-20 09:32:07,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 212 transitions, 478 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:32:07,364 INFO L231 Difference]: Finished difference. Result has 209 places, 207 transitions, 444 flow [2022-11-20 09:32:07,364 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=444, PETRI_PLACES=209, PETRI_TRANSITIONS=207} [2022-11-20 09:32:07,365 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 2 predicate places. [2022-11-20 09:32:07,365 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 207 transitions, 444 flow [2022-11-20 09:32:07,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:07,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:07,365 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] [2022-11-20 09:32:07,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:32:07,366 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:32:07,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:07,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1662733345, now seen corresponding path program 1 times [2022-11-20 09:32:07,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:07,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945992190] [2022-11-20 09:32:07,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:07,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:07,403 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:07,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490673565] [2022-11-20 09:32:07,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:07,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:07,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:07,405 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:07,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:32:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:07,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:32:07,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:07,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:07,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:07,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945992190] [2022-11-20 09:32:07,747 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:07,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490673565] [2022-11-20 09:32:07,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490673565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:07,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:07,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:07,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195818377] [2022-11-20 09:32:07,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:07,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:07,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:07,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:07,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:07,753 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-20 09:32:07,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 207 transitions, 444 flow. Second operand has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:07,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:07,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-20 09:32:07,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:07,883 INFO L130 PetriNetUnfolder]: 7/349 cut-off events. [2022-11-20 09:32:07,883 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-20 09:32:07,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 349 events. 7/349 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 711 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 201. Up to 30 conditions per place. [2022-11-20 09:32:07,885 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 23 selfloop transitions, 5 changer transitions 0/216 dead transitions. [2022-11-20 09:32:07,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 216 transitions, 518 flow [2022-11-20 09:32:07,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:32:07,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:32:07,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 979 transitions. [2022-11-20 09:32:07,889 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9023041474654377 [2022-11-20 09:32:07,890 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 979 transitions. [2022-11-20 09:32:07,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 979 transitions. [2022-11-20 09:32:07,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:07,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 979 transitions. [2022-11-20 09:32:07,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 195.8) internal successors, (979), 5 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:07,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:07,896 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:07,896 INFO L175 Difference]: Start difference. First operand has 209 places, 207 transitions, 444 flow. Second operand 5 states and 979 transitions. [2022-11-20 09:32:07,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 216 transitions, 518 flow [2022-11-20 09:32:07,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 216 transitions, 516 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:32:07,902 INFO L231 Difference]: Finished difference. Result has 216 places, 210 transitions, 476 flow [2022-11-20 09:32:07,902 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=476, PETRI_PLACES=216, PETRI_TRANSITIONS=210} [2022-11-20 09:32:07,903 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 9 predicate places. [2022-11-20 09:32:07,903 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 210 transitions, 476 flow [2022-11-20 09:32:07,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:07,904 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:07,905 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] [2022-11-20 09:32:07,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:08,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:08,111 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:32:08,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:08,111 INFO L85 PathProgramCache]: Analyzing trace with hash 5126545, now seen corresponding path program 1 times [2022-11-20 09:32:08,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:08,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685037674] [2022-11-20 09:32:08,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:08,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:08,167 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:08,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434685821] [2022-11-20 09:32:08,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:08,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:08,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:08,171 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:08,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:32:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:08,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:32:08,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:08,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:08,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:08,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685037674] [2022-11-20 09:32:08,420 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:08,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434685821] [2022-11-20 09:32:08,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434685821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:08,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:08,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:08,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188012062] [2022-11-20 09:32:08,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:08,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:08,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:08,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:08,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:08,424 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-20 09:32:08,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 210 transitions, 476 flow. Second operand has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:08,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:08,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-20 09:32:08,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:08,509 INFO L130 PetriNetUnfolder]: 7/345 cut-off events. [2022-11-20 09:32:08,510 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-20 09:32:08,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 345 events. 7/345 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 703 event pairs, 0 based on Foata normal form. 4/331 useless extension candidates. Maximal degree in co-relation 250. Up to 28 conditions per place. [2022-11-20 09:32:08,512 INFO L137 encePairwiseOnDemand]: 213/217 looper letters, 16 selfloop transitions, 5 changer transitions 0/209 dead transitions. [2022-11-20 09:32:08,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 209 transitions, 516 flow [2022-11-20 09:32:08,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:32:08,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:32:08,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 779 transitions. [2022-11-20 09:32:08,515 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8974654377880185 [2022-11-20 09:32:08,515 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 779 transitions. [2022-11-20 09:32:08,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 779 transitions. [2022-11-20 09:32:08,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:08,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 779 transitions. [2022-11-20 09:32:08,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 194.75) internal successors, (779), 4 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:08,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:08,521 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:08,521 INFO L175 Difference]: Start difference. First operand has 216 places, 210 transitions, 476 flow. Second operand 4 states and 779 transitions. [2022-11-20 09:32:08,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 209 transitions, 516 flow [2022-11-20 09:32:08,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 209 transitions, 507 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 09:32:08,526 INFO L231 Difference]: Finished difference. Result has 216 places, 209 transitions, 478 flow [2022-11-20 09:32:08,527 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=478, PETRI_PLACES=216, PETRI_TRANSITIONS=209} [2022-11-20 09:32:08,528 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 9 predicate places. [2022-11-20 09:32:08,528 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 209 transitions, 478 flow [2022-11-20 09:32:08,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:08,529 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:08,529 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] [2022-11-20 09:32:08,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:08,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:08,736 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:32:08,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:08,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1278315239, now seen corresponding path program 1 times [2022-11-20 09:32:08,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:08,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118421916] [2022-11-20 09:32:08,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:08,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:08,763 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:08,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907124528] [2022-11-20 09:32:08,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:08,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:08,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:08,765 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:08,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:32:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:08,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:32:08,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:09,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:09,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:09,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:09,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:09,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118421916] [2022-11-20 09:32:09,110 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:09,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907124528] [2022-11-20 09:32:09,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907124528] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:09,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:09,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 09:32:09,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408225034] [2022-11-20 09:32:09,112 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:09,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:32:09,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:09,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:32:09,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:32:09,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-20 09:32:09,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 209 transitions, 478 flow. Second operand has 8 states, 8 states have (on average 192.875) internal successors, (1543), 8 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:09,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:09,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-20 09:32:09,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:09,363 INFO L130 PetriNetUnfolder]: 7/431 cut-off events. [2022-11-20 09:32:09,364 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-20 09:32:09,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 431 events. 7/431 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 466 event pairs, 0 based on Foata normal form. 6/419 useless extension candidates. Maximal degree in co-relation 317. Up to 22 conditions per place. [2022-11-20 09:32:09,366 INFO L137 encePairwiseOnDemand]: 210/217 looper letters, 29 selfloop transitions, 10 changer transitions 0/227 dead transitions. [2022-11-20 09:32:09,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 227 transitions, 610 flow [2022-11-20 09:32:09,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:32:09,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 09:32:09,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1751 transitions. [2022-11-20 09:32:09,370 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8965693804403482 [2022-11-20 09:32:09,371 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1751 transitions. [2022-11-20 09:32:09,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1751 transitions. [2022-11-20 09:32:09,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:09,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1751 transitions. [2022-11-20 09:32:09,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 194.55555555555554) internal successors, (1751), 9 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:09,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:09,381 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:09,381 INFO L175 Difference]: Start difference. First operand has 216 places, 209 transitions, 478 flow. Second operand 9 states and 1751 transitions. [2022-11-20 09:32:09,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 227 transitions, 610 flow [2022-11-20 09:32:09,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 227 transitions, 597 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 09:32:09,387 INFO L231 Difference]: Finished difference. Result has 227 places, 213 transitions, 528 flow [2022-11-20 09:32:09,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=528, PETRI_PLACES=227, PETRI_TRANSITIONS=213} [2022-11-20 09:32:09,388 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 20 predicate places. [2022-11-20 09:32:09,388 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 213 transitions, 528 flow [2022-11-20 09:32:09,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 192.875) internal successors, (1543), 8 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:09,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:09,390 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:09,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:09,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:09,595 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:32:09,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:09,596 INFO L85 PathProgramCache]: Analyzing trace with hash -235804927, now seen corresponding path program 1 times [2022-11-20 09:32:09,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:09,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940805793] [2022-11-20 09:32:09,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:09,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:09,651 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:09,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768652994] [2022-11-20 09:32:09,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:09,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:09,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:09,663 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:09,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:32:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:09,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:32:09,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:10,085 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:10,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:10,325 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:10,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:10,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940805793] [2022-11-20 09:32:10,325 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:10,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768652994] [2022-11-20 09:32:10,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768652994] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:10,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:10,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 09:32:10,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695075474] [2022-11-20 09:32:10,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:10,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 09:32:10,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:10,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 09:32:10,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:32:10,334 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-20 09:32:10,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 213 transitions, 528 flow. Second operand has 14 states, 14 states have (on average 193.64285714285714) internal successors, (2711), 14 states have internal predecessors, (2711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:10,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:10,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-20 09:32:10,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:10,631 INFO L130 PetriNetUnfolder]: 13/655 cut-off events. [2022-11-20 09:32:10,631 INFO L131 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2022-11-20 09:32:10,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 889 conditions, 655 events. 13/655 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1271 event pairs, 0 based on Foata normal form. 4/623 useless extension candidates. Maximal degree in co-relation 539. Up to 19 conditions per place. [2022-11-20 09:32:10,636 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 37 selfloop transitions, 16 changer transitions 0/241 dead transitions. [2022-11-20 09:32:10,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 241 transitions, 742 flow [2022-11-20 09:32:10,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 09:32:10,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 09:32:10,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2905 transitions. [2022-11-20 09:32:10,642 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8924731182795699 [2022-11-20 09:32:10,642 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2905 transitions. [2022-11-20 09:32:10,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2905 transitions. [2022-11-20 09:32:10,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:10,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2905 transitions. [2022-11-20 09:32:10,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 193.66666666666666) internal successors, (2905), 15 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:10,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 217.0) internal successors, (3472), 16 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:10,658 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 217.0) internal successors, (3472), 16 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:10,658 INFO L175 Difference]: Start difference. First operand has 227 places, 213 transitions, 528 flow. Second operand 15 states and 2905 transitions. [2022-11-20 09:32:10,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 241 transitions, 742 flow [2022-11-20 09:32:10,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 241 transitions, 724 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-20 09:32:10,665 INFO L231 Difference]: Finished difference. Result has 236 places, 217 transitions, 577 flow [2022-11-20 09:32:10,666 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=577, PETRI_PLACES=236, PETRI_TRANSITIONS=217} [2022-11-20 09:32:10,666 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 29 predicate places. [2022-11-20 09:32:10,667 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 217 transitions, 577 flow [2022-11-20 09:32:10,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 193.64285714285714) internal successors, (2711), 14 states have internal predecessors, (2711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:10,668 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:10,668 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 09:32:10,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:10,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 09:32:10,874 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:32:10,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:10,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1415545401, now seen corresponding path program 2 times [2022-11-20 09:32:10,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:10,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61953317] [2022-11-20 09:32:10,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:10,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:10,927 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:10,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067887807] [2022-11-20 09:32:10,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:32:10,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:10,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:10,930 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:10,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 09:32:11,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:32:11,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:32:11,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:32:11,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:11,317 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-20 09:32:11,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:11,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:11,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61953317] [2022-11-20 09:32:11,321 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:11,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067887807] [2022-11-20 09:32:11,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067887807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:11,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:11,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:11,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470165289] [2022-11-20 09:32:11,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:11,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:11,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:11,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:11,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:11,326 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 217 [2022-11-20 09:32:11,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 217 transitions, 577 flow. Second operand has 4 states, 4 states have (on average 189.75) internal successors, (759), 4 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:11,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:11,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 217 [2022-11-20 09:32:11,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:11,505 INFO L130 PetriNetUnfolder]: 13/655 cut-off events. [2022-11-20 09:32:11,505 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-11-20 09:32:11,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895 conditions, 655 events. 13/655 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1262 event pairs, 0 based on Foata normal form. 0/621 useless extension candidates. Maximal degree in co-relation 569. Up to 50 conditions per place. [2022-11-20 09:32:11,510 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 29 selfloop transitions, 5 changer transitions 0/229 dead transitions. [2022-11-20 09:32:11,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 229 transitions, 669 flow [2022-11-20 09:32:11,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:32:11,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:32:11,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 970 transitions. [2022-11-20 09:32:11,513 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8940092165898618 [2022-11-20 09:32:11,513 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 970 transitions. [2022-11-20 09:32:11,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 970 transitions. [2022-11-20 09:32:11,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:11,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 970 transitions. [2022-11-20 09:32:11,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 194.0) internal successors, (970), 5 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:11,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:11,519 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:11,519 INFO L175 Difference]: Start difference. First operand has 236 places, 217 transitions, 577 flow. Second operand 5 states and 970 transitions. [2022-11-20 09:32:11,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 229 transitions, 669 flow [2022-11-20 09:32:11,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 229 transitions, 610 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-20 09:32:11,527 INFO L231 Difference]: Finished difference. Result has 231 places, 220 transitions, 552 flow [2022-11-20 09:32:11,528 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=552, PETRI_PLACES=231, PETRI_TRANSITIONS=220} [2022-11-20 09:32:11,529 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 24 predicate places. [2022-11-20 09:32:11,529 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 220 transitions, 552 flow [2022-11-20 09:32:11,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 189.75) internal successors, (759), 4 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:11,530 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:11,530 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 09:32:11,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:11,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:11,745 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:32:11,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:11,746 INFO L85 PathProgramCache]: Analyzing trace with hash -932234146, now seen corresponding path program 1 times [2022-11-20 09:32:11,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:11,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813550159] [2022-11-20 09:32:11,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:11,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:11,783 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:11,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504057104] [2022-11-20 09:32:11,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:11,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:11,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:11,785 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:11,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 09:32:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:12,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:32:12,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:12,289 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:12,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:12,543 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:12,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:12,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813550159] [2022-11-20 09:32:12,544 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:12,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504057104] [2022-11-20 09:32:12,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504057104] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:12,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:12,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 09:32:12,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557043752] [2022-11-20 09:32:12,545 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:12,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:32:12,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:12,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:32:12,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:32:12,550 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-20 09:32:12,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 220 transitions, 552 flow. Second operand has 16 states, 16 states have (on average 193.6875) internal successors, (3099), 16 states have internal predecessors, (3099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:12,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:12,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-20 09:32:12,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:13,004 INFO L130 PetriNetUnfolder]: 7/765 cut-off events. [2022-11-20 09:32:13,004 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2022-11-20 09:32:13,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1076 conditions, 765 events. 7/765 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 481 event pairs, 0 based on Foata normal form. 8/759 useless extension candidates. Maximal degree in co-relation 604. Up to 20 conditions per place. [2022-11-20 09:32:13,007 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 60 selfloop transitions, 22 changer transitions 0/273 dead transitions. [2022-11-20 09:32:13,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 273 transitions, 909 flow [2022-11-20 09:32:13,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 09:32:13,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 09:32:13,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4075 transitions. [2022-11-20 09:32:13,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8942286592056178 [2022-11-20 09:32:13,016 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4075 transitions. [2022-11-20 09:32:13,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4075 transitions. [2022-11-20 09:32:13,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:13,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4075 transitions. [2022-11-20 09:32:13,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 194.04761904761904) internal successors, (4075), 21 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:13,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 217.0) internal successors, (4774), 22 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:13,038 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 217.0) internal successors, (4774), 22 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:13,039 INFO L175 Difference]: Start difference. First operand has 231 places, 220 transitions, 552 flow. Second operand 21 states and 4075 transitions. [2022-11-20 09:32:13,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 273 transitions, 909 flow [2022-11-20 09:32:13,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 273 transitions, 899 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-20 09:32:13,045 INFO L231 Difference]: Finished difference. Result has 255 places, 229 transitions, 662 flow [2022-11-20 09:32:13,046 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=662, PETRI_PLACES=255, PETRI_TRANSITIONS=229} [2022-11-20 09:32:13,049 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 48 predicate places. [2022-11-20 09:32:13,049 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 229 transitions, 662 flow [2022-11-20 09:32:13,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 193.6875) internal successors, (3099), 16 states have internal predecessors, (3099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:13,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:13,059 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:13,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:13,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:13,267 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:32:13,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:13,267 INFO L85 PathProgramCache]: Analyzing trace with hash -740231522, now seen corresponding path program 2 times [2022-11-20 09:32:13,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:13,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337358724] [2022-11-20 09:32:13,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:13,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:13,338 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:13,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281617704] [2022-11-20 09:32:13,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:32:13,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:13,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:13,340 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:13,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 09:32:13,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:32:13,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:32:13,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:32:13,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:14,041 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-20 09:32:14,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:14,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:14,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337358724] [2022-11-20 09:32:14,041 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:14,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281617704] [2022-11-20 09:32:14,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281617704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:14,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:14,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:14,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889564937] [2022-11-20 09:32:14,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:14,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:14,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:14,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:14,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:14,049 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 217 [2022-11-20 09:32:14,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 229 transitions, 662 flow. Second operand has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:14,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:14,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 217 [2022-11-20 09:32:14,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:14,291 INFO L130 PetriNetUnfolder]: 7/763 cut-off events. [2022-11-20 09:32:14,291 INFO L131 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-11-20 09:32:14,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 763 events. 7/763 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 477 event pairs, 0 based on Foata normal form. 2/751 useless extension candidates. Maximal degree in co-relation 605. Up to 80 conditions per place. [2022-11-20 09:32:14,295 INFO L137 encePairwiseOnDemand]: 213/217 looper letters, 18 selfloop transitions, 5 changer transitions 0/227 dead transitions. [2022-11-20 09:32:14,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 227 transitions, 698 flow [2022-11-20 09:32:14,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:32:14,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:32:14,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 769 transitions. [2022-11-20 09:32:14,298 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2022-11-20 09:32:14,298 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 769 transitions. [2022-11-20 09:32:14,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 769 transitions. [2022-11-20 09:32:14,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:14,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 769 transitions. [2022-11-20 09:32:14,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:14,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:14,302 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:14,302 INFO L175 Difference]: Start difference. First operand has 255 places, 229 transitions, 662 flow. Second operand 4 states and 769 transitions. [2022-11-20 09:32:14,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 227 transitions, 698 flow [2022-11-20 09:32:14,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 227 transitions, 675 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-20 09:32:14,308 INFO L231 Difference]: Finished difference. Result has 246 places, 227 transitions, 639 flow [2022-11-20 09:32:14,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=639, PETRI_PLACES=246, PETRI_TRANSITIONS=227} [2022-11-20 09:32:14,309 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 39 predicate places. [2022-11-20 09:32:14,309 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 227 transitions, 639 flow [2022-11-20 09:32:14,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:14,310 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:14,310 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:14,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-20 09:32:14,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 09:32:14,515 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:32:14,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:14,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1998132056, now seen corresponding path program 1 times [2022-11-20 09:32:14,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:14,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805966360] [2022-11-20 09:32:14,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:14,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:14,581 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:14,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910551181] [2022-11-20 09:32:14,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:14,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:14,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:14,583 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:14,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 09:32:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:15,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 09:32:15,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:15,634 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:15,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:16,360 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:16,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:16,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805966360] [2022-11-20 09:32:16,360 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:16,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910551181] [2022-11-20 09:32:16,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910551181] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:16,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:16,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-20 09:32:16,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967705130] [2022-11-20 09:32:16,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:16,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 09:32:16,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:16,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 09:32:16,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-20 09:32:16,368 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-20 09:32:16,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 227 transitions, 639 flow. Second operand has 32 states, 32 states have (on average 194.125) internal successors, (6212), 32 states have internal predecessors, (6212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:16,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:16,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-20 09:32:16,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:17,603 INFO L130 PetriNetUnfolder]: 7/1435 cut-off events. [2022-11-20 09:32:17,604 INFO L131 PetriNetUnfolder]: For 725/725 co-relation queries the response was YES. [2022-11-20 09:32:17,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2196 conditions, 1435 events. 7/1435 cut-off events. For 725/725 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 518 event pairs, 0 based on Foata normal form. 16/1437 useless extension candidates. Maximal degree in co-relation 1194. Up to 38 conditions per place. [2022-11-20 09:32:17,610 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 124 selfloop transitions, 46 changer transitions 0/359 dead transitions. [2022-11-20 09:32:17,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 359 transitions, 1575 flow [2022-11-20 09:32:17,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 09:32:17,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-20 09:32:17,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 8727 transitions. [2022-11-20 09:32:17,626 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8937019969278034 [2022-11-20 09:32:17,627 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 8727 transitions. [2022-11-20 09:32:17,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 8727 transitions. [2022-11-20 09:32:17,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:17,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 8727 transitions. [2022-11-20 09:32:17,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 193.93333333333334) internal successors, (8727), 45 states have internal predecessors, (8727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:17,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 217.0) internal successors, (9982), 46 states have internal predecessors, (9982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:17,667 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 217.0) internal successors, (9982), 46 states have internal predecessors, (9982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:17,667 INFO L175 Difference]: Start difference. First operand has 246 places, 227 transitions, 639 flow. Second operand 45 states and 8727 transitions. [2022-11-20 09:32:17,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 359 transitions, 1575 flow [2022-11-20 09:32:17,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 359 transitions, 1565 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 09:32:17,677 INFO L231 Difference]: Finished difference. Result has 296 places, 252 transitions, 952 flow [2022-11-20 09:32:17,678 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=952, PETRI_PLACES=296, PETRI_TRANSITIONS=252} [2022-11-20 09:32:17,678 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 89 predicate places. [2022-11-20 09:32:17,679 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 252 transitions, 952 flow [2022-11-20 09:32:17,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 194.125) internal successors, (6212), 32 states have internal predecessors, (6212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:17,681 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:17,681 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:17,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:17,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 09:32:17,889 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:32:17,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:17,890 INFO L85 PathProgramCache]: Analyzing trace with hash 282355752, now seen corresponding path program 2 times [2022-11-20 09:32:17,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:17,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67649029] [2022-11-20 09:32:17,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:17,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:18,036 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:18,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033223177] [2022-11-20 09:32:18,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:32:18,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:18,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:18,038 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:18,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 09:32:18,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:32:18,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:32:18,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:32:18,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:18,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4321 trivial. 0 not checked. [2022-11-20 09:32:18,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:18,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:18,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67649029] [2022-11-20 09:32:18,643 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:18,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033223177] [2022-11-20 09:32:18,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033223177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:18,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:18,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:18,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881384423] [2022-11-20 09:32:18,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:18,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:18,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:18,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:18,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:18,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-20 09:32:18,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 252 transitions, 952 flow. Second operand has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:18,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:18,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-20 09:32:18,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:19,270 INFO L130 PetriNetUnfolder]: 23/1491 cut-off events. [2022-11-20 09:32:19,270 INFO L131 PetriNetUnfolder]: For 729/729 co-relation queries the response was YES. [2022-11-20 09:32:19,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2168 conditions, 1491 events. 23/1491 cut-off events. For 729/729 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 982 event pairs, 3 based on Foata normal form. 0/1471 useless extension candidates. Maximal degree in co-relation 1897. Up to 38 conditions per place. [2022-11-20 09:32:19,279 INFO L137 encePairwiseOnDemand]: 212/217 looper letters, 16 selfloop transitions, 4 changer transitions 0/254 dead transitions. [2022-11-20 09:32:19,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 254 transitions, 1002 flow [2022-11-20 09:32:19,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:32:19,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:32:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 971 transitions. [2022-11-20 09:32:19,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8949308755760369 [2022-11-20 09:32:19,282 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 971 transitions. [2022-11-20 09:32:19,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 971 transitions. [2022-11-20 09:32:19,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:19,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 971 transitions. [2022-11-20 09:32:19,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 194.2) internal successors, (971), 5 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:19,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:19,286 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:19,287 INFO L175 Difference]: Start difference. First operand has 296 places, 252 transitions, 952 flow. Second operand 5 states and 971 transitions. [2022-11-20 09:32:19,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 254 transitions, 1002 flow [2022-11-20 09:32:19,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 254 transitions, 945 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-20 09:32:19,298 INFO L231 Difference]: Finished difference. Result has 281 places, 251 transitions, 901 flow [2022-11-20 09:32:19,299 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=901, PETRI_PLACES=281, PETRI_TRANSITIONS=251} [2022-11-20 09:32:19,299 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 74 predicate places. [2022-11-20 09:32:19,299 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 251 transitions, 901 flow [2022-11-20 09:32:19,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:19,300 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:19,300 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:19,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:19,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 09:32:19,506 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:32:19,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:19,507 INFO L85 PathProgramCache]: Analyzing trace with hash 282386537, now seen corresponding path program 1 times [2022-11-20 09:32:19,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:19,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930151443] [2022-11-20 09:32:19,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:19,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:19,627 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:19,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895008385] [2022-11-20 09:32:19,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:19,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:19,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:19,629 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:19,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 09:32:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:20,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 09:32:20,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:21,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:23,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:23,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:23,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930151443] [2022-11-20 09:32:23,559 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:23,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895008385] [2022-11-20 09:32:23,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895008385] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:23,560 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:23,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-20 09:32:23,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176456710] [2022-11-20 09:32:23,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:23,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-20 09:32:23,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:23,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-20 09:32:23,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-20 09:32:23,572 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-20 09:32:23,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 251 transitions, 901 flow. Second operand has 61 states, 61 states have (on average 194.37704918032787) internal successors, (11857), 61 states have internal predecessors, (11857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:23,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:23,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-20 09:32:23,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:27,474 INFO L130 PetriNetUnfolder]: 7/2694 cut-off events. [2022-11-20 09:32:27,475 INFO L131 PetriNetUnfolder]: For 4943/4943 co-relation queries the response was YES. [2022-11-20 09:32:27,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4453 conditions, 2694 events. 7/2694 cut-off events. For 4943/4943 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 587 event pairs, 0 based on Foata normal form. 30/2712 useless extension candidates. Maximal degree in co-relation 4393. Up to 96 conditions per place. [2022-11-20 09:32:27,484 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 244 selfloop transitions, 91 changer transitions 0/523 dead transitions. [2022-11-20 09:32:27,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 523 transitions, 2983 flow [2022-11-20 09:32:27,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-20 09:32:27,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-20 09:32:27,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 17449 transitions. [2022-11-20 09:32:27,506 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8934459805427547 [2022-11-20 09:32:27,507 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 17449 transitions. [2022-11-20 09:32:27,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 17449 transitions. [2022-11-20 09:32:27,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:27,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 17449 transitions. [2022-11-20 09:32:27,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 193.87777777777777) internal successors, (17449), 90 states have internal predecessors, (17449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:27,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 217.0) internal successors, (19747), 91 states have internal predecessors, (19747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:27,573 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 217.0) internal successors, (19747), 91 states have internal predecessors, (19747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:27,573 INFO L175 Difference]: Start difference. First operand has 281 places, 251 transitions, 901 flow. Second operand 90 states and 17449 transitions. [2022-11-20 09:32:27,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 523 transitions, 2983 flow [2022-11-20 09:32:27,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 523 transitions, 2975 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:32:27,592 INFO L231 Difference]: Finished difference. Result has 382 places, 297 transitions, 1582 flow [2022-11-20 09:32:27,593 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1582, PETRI_PLACES=382, PETRI_TRANSITIONS=297} [2022-11-20 09:32:27,593 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 175 predicate places. [2022-11-20 09:32:27,593 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 297 transitions, 1582 flow [2022-11-20 09:32:27,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 194.37704918032787) internal successors, (11857), 61 states have internal predecessors, (11857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:27,597 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:27,597 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:27,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:27,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:27,808 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:32:27,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:27,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1185555336, now seen corresponding path program 2 times [2022-11-20 09:32:27,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:27,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809243456] [2022-11-20 09:32:27,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:27,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:28,148 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:28,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [977520445] [2022-11-20 09:32:28,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:32:28,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:28,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:28,150 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:28,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 09:32:29,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:32:29,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:32:29,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 5208 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:32:29,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:31,499 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-20 09:32:31,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:33,439 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-20 09:32:33,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:33,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809243456] [2022-11-20 09:32:33,439 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:33,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977520445] [2022-11-20 09:32:33,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977520445] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:33,440 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:33,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 09:32:33,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914745163] [2022-11-20 09:32:33,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:33,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:32:33,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:33,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:32:33,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:32:33,444 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 217 [2022-11-20 09:32:33,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 297 transitions, 1582 flow. Second operand has 8 states, 8 states have (on average 190.75) internal successors, (1526), 8 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:33,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:33,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 217 [2022-11-20 09:32:33,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:36,378 INFO L130 PetriNetUnfolder]: 8/4000 cut-off events. [2022-11-20 09:32:36,378 INFO L131 PetriNetUnfolder]: For 4582/4582 co-relation queries the response was YES. [2022-11-20 09:32:36,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6701 conditions, 4000 events. 8/4000 cut-off events. For 4582/4582 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 526 event pairs, 0 based on Foata normal form. 3/3990 useless extension candidates. Maximal degree in co-relation 4617. Up to 187 conditions per place. [2022-11-20 09:32:36,387 INFO L137 encePairwiseOnDemand]: 210/217 looper letters, 38 selfloop transitions, 9 changer transitions 0/321 dead transitions. [2022-11-20 09:32:36,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 321 transitions, 1738 flow [2022-11-20 09:32:36,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:32:36,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 09:32:36,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1733 transitions. [2022-11-20 09:32:36,391 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8873527905785971 [2022-11-20 09:32:36,391 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1733 transitions. [2022-11-20 09:32:36,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1733 transitions. [2022-11-20 09:32:36,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:36,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1733 transitions. [2022-11-20 09:32:36,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 192.55555555555554) internal successors, (1733), 9 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:36,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:36,399 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:36,399 INFO L175 Difference]: Start difference. First operand has 382 places, 297 transitions, 1582 flow. Second operand 9 states and 1733 transitions. [2022-11-20 09:32:36,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 321 transitions, 1738 flow [2022-11-20 09:32:36,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 321 transitions, 1619 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-20 09:32:36,439 INFO L231 Difference]: Finished difference. Result has 353 places, 301 transitions, 1519 flow [2022-11-20 09:32:36,440 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=1463, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1519, PETRI_PLACES=353, PETRI_TRANSITIONS=301} [2022-11-20 09:32:36,440 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 146 predicate places. [2022-11-20 09:32:36,440 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 301 transitions, 1519 flow [2022-11-20 09:32:36,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 190.75) internal successors, (1526), 8 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:36,441 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:36,442 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:36,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:36,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 09:32:36,657 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:32:36,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:36,658 INFO L85 PathProgramCache]: Analyzing trace with hash -894325561, now seen corresponding path program 1 times [2022-11-20 09:32:36,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:36,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531842244] [2022-11-20 09:32:36,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:36,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:36,847 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:36,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2089200564] [2022-11-20 09:32:36,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:36,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:36,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:36,849 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:36,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 09:32:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:40,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 5339 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 09:32:40,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:43,112 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-20 09:32:43,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:45,192 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-20 09:32:45,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:45,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531842244] [2022-11-20 09:32:45,192 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:45,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089200564] [2022-11-20 09:32:45,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089200564] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:45,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:45,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 09:32:45,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868918440] [2022-11-20 09:32:45,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:45,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 09:32:45,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:45,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 09:32:45,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:32:45,201 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 217 [2022-11-20 09:32:45,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 301 transitions, 1519 flow. Second operand has 14 states, 14 states have (on average 182.35714285714286) internal successors, (2553), 14 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:45,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:45,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 217 [2022-11-20 09:32:45,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:49,128 INFO L130 PetriNetUnfolder]: 8/3968 cut-off events. [2022-11-20 09:32:49,128 INFO L131 PetriNetUnfolder]: For 4795/4795 co-relation queries the response was YES. [2022-11-20 09:32:49,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6973 conditions, 3968 events. 8/3968 cut-off events. For 4795/4795 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 432 event pairs, 0 based on Foata normal form. 32/3987 useless extension candidates. Maximal degree in co-relation 4758. Up to 307 conditions per place. [2022-11-20 09:32:49,139 INFO L137 encePairwiseOnDemand]: 203/217 looper letters, 224 selfloop transitions, 144 changer transitions 0/541 dead transitions. [2022-11-20 09:32:49,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 541 transitions, 4379 flow [2022-11-20 09:32:49,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 09:32:49,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 09:32:49,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4351 transitions. [2022-11-20 09:32:49,146 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8354454685099847 [2022-11-20 09:32:49,146 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4351 transitions. [2022-11-20 09:32:49,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4351 transitions. [2022-11-20 09:32:49,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:49,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4351 transitions. [2022-11-20 09:32:49,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 181.29166666666666) internal successors, (4351), 24 states have internal predecessors, (4351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:49,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 217.0) internal successors, (5425), 25 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:49,166 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 217.0) internal successors, (5425), 25 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:49,167 INFO L175 Difference]: Start difference. First operand has 353 places, 301 transitions, 1519 flow. Second operand 24 states and 4351 transitions. [2022-11-20 09:32:49,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 541 transitions, 4379 flow [2022-11-20 09:32:49,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 541 transitions, 4363 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-20 09:32:49,207 INFO L231 Difference]: Finished difference. Result has 377 places, 432 transitions, 3558 flow [2022-11-20 09:32:49,208 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3558, PETRI_PLACES=377, PETRI_TRANSITIONS=432} [2022-11-20 09:32:49,209 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 170 predicate places. [2022-11-20 09:32:49,209 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 432 transitions, 3558 flow [2022-11-20 09:32:49,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 182.35714285714286) internal successors, (2553), 14 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:49,209 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:49,210 INFO L209 CegarLoopForPetriNet]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:49,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:49,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 09:32:49,427 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:32:49,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:49,427 INFO L85 PathProgramCache]: Analyzing trace with hash 123984631, now seen corresponding path program 1 times [2022-11-20 09:32:49,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:49,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467362522] [2022-11-20 09:32:49,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:49,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:49,646 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:49,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [448013256] [2022-11-20 09:32:49,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:49,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:49,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:49,651 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:49,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 09:32:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:56,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 5507 conjuncts, 226 conjunts are in the unsatisfiable core [2022-11-20 09:32:56,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:57,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:57,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-20 09:32:57,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:57,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-20 09:32:57,447 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 09:32:57,447 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 [2022-11-20 09:32:58,737 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-20 09:32:58,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-20 09:32:59,911 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-20 09:32:59,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 45 [2022-11-20 09:33:02,012 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-20 09:33:02,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 32 treesize of output 57 [2022-11-20 09:33:05,060 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:33:05,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:33:08,154 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:33:08,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:33:12,090 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:33:12,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:33:15,258 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:33:15,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:33:18,431 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:33:18,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:33:21,923 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:33:21,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:33:25,014 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:33:25,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:33:28,157 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:33:28,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:33:31,779 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:33:31,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:33:34,961 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:33:34,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:33:38,279 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:33:38,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:33:41,758 INFO L321 Elim1Store]: treesize reduction 70, result has 27.1 percent of original size [2022-11-20 09:33:41,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 46 [2022-11-20 09:33:44,881 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:33:44,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:33:48,211 INFO L321 Elim1Store]: treesize reduction 70, result has 27.1 percent of original size [2022-11-20 09:33:48,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 46 [2022-11-20 09:33:51,702 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:33:51,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:33:54,884 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:33:54,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:33:58,058 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:33:58,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:34:01,707 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:34:01,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:34:04,673 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:34:04,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:34:07,832 INFO L321 Elim1Store]: treesize reduction 70, result has 27.1 percent of original size [2022-11-20 09:34:07,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 46 [2022-11-20 09:34:11,407 INFO L321 Elim1Store]: treesize reduction 70, result has 27.1 percent of original size [2022-11-20 09:34:11,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 46 [2022-11-20 09:34:14,269 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:34:14,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:34:17,521 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:34:17,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:34:20,963 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:34:20,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:34:23,833 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:34:23,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:34:27,118 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-20 09:34:27,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-20 09:34:30,933 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 [2022-11-20 09:34:31,105 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 32 treesize of output 31 [2022-11-20 09:34:32,144 INFO L321 Elim1Store]: treesize reduction 20, result has 51.2 percent of original size [2022-11-20 09:34:32,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 39 [2022-11-20 09:34:32,300 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 22 treesize of output 24 [2022-11-20 09:34:32,491 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 22 treesize of output 24 [2022-11-20 09:34:32,509 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 [2022-11-20 09:34:33,113 INFO L134 CoverageAnalysis]: Checked inductivity of 20475 backedges. 2375 proven. 4783 refuted. 0 times theorem prover too weak. 13317 trivial. 0 not checked. [2022-11-20 09:34:33,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:57,336 INFO L134 CoverageAnalysis]: Checked inductivity of 20475 backedges. 5766 proven. 2560 refuted. 0 times theorem prover too weak. 12149 trivial. 0 not checked. [2022-11-20 09:34:57,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:57,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467362522] [2022-11-20 09:34:57,337 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:34:57,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448013256] [2022-11-20 09:34:57,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448013256] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:34:57,337 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:34:57,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 16] total 54 [2022-11-20 09:34:57,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924321867] [2022-11-20 09:34:57,338 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:34:57,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-20 09:34:57,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:57,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-20 09:34:57,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=625, Invalid=2345, Unknown=0, NotChecked=0, Total=2970 [2022-11-20 09:34:57,346 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 217 [2022-11-20 09:34:57,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 432 transitions, 3558 flow. Second operand has 55 states, 55 states have (on average 134.1818181818182) internal successors, (7380), 55 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:57,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:34:57,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 217 [2022-11-20 09:34:57,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:35:08,914 INFO L130 PetriNetUnfolder]: 349/5335 cut-off events. [2022-11-20 09:35:08,914 INFO L131 PetriNetUnfolder]: For 6755/6755 co-relation queries the response was YES. [2022-11-20 09:35:08,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11335 conditions, 5335 events. 349/5335 cut-off events. For 6755/6755 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 12345 event pairs, 287 based on Foata normal form. 56/5163 useless extension candidates. Maximal degree in co-relation 6205. Up to 729 conditions per place. [2022-11-20 09:35:08,941 INFO L137 encePairwiseOnDemand]: 186/217 looper letters, 391 selfloop transitions, 250 changer transitions 0/762 dead transitions. [2022-11-20 09:35:08,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 762 transitions, 6201 flow [2022-11-20 09:35:08,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-20 09:35:08,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2022-11-20 09:35:08,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 8633 transitions. [2022-11-20 09:35:08,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6027789414886189 [2022-11-20 09:35:08,954 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 8633 transitions. [2022-11-20 09:35:08,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 8633 transitions. [2022-11-20 09:35:08,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:35:08,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 8633 transitions. [2022-11-20 09:35:08,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 130.8030303030303) internal successors, (8633), 66 states have internal predecessors, (8633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:08,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 217.0) internal successors, (14539), 67 states have internal predecessors, (14539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:08,990 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 217.0) internal successors, (14539), 67 states have internal predecessors, (14539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:08,990 INFO L175 Difference]: Start difference. First operand has 377 places, 432 transitions, 3558 flow. Second operand 66 states and 8633 transitions. [2022-11-20 09:35:08,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 762 transitions, 6201 flow [2022-11-20 09:35:09,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 762 transitions, 6165 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-11-20 09:35:09,057 INFO L231 Difference]: Finished difference. Result has 450 places, 551 transitions, 5223 flow [2022-11-20 09:35:09,058 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=3512, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=5223, PETRI_PLACES=450, PETRI_TRANSITIONS=551} [2022-11-20 09:35:09,059 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 243 predicate places. [2022-11-20 09:35:09,059 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 551 transitions, 5223 flow [2022-11-20 09:35:09,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 134.1818181818182) internal successors, (7380), 55 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:09,061 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:35:09,062 INFO L209 CegarLoopForPetriNet]: trace histogram [62, 62, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 09:35:09,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:09,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 09:35:09,275 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:35:09,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:09,276 INFO L85 PathProgramCache]: Analyzing trace with hash 415109579, now seen corresponding path program 2 times [2022-11-20 09:35:09,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:09,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664746161] [2022-11-20 09:35:09,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:09,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:09,659 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:35:09,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027797981] [2022-11-20 09:35:09,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:35:09,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:09,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:09,666 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:35:09,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 09:37:14,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:37:14,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:37:14,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 10400 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 09:37:14,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:37:18,041 INFO L134 CoverageAnalysis]: Checked inductivity of 75373 backedges. 39643 proven. 0 refuted. 0 times theorem prover too weak. 35730 trivial. 0 not checked. [2022-11-20 09:37:18,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:37:18,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:37:18,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664746161] [2022-11-20 09:37:18,041 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:37:18,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027797981] [2022-11-20 09:37:18,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027797981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:37:18,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:37:18,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:37:18,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2484054] [2022-11-20 09:37:18,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:37:18,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:37:18,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:37:18,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:37:18,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:37:18,047 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 217 [2022-11-20 09:37:18,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 551 transitions, 5223 flow. Second operand has 11 states, 11 states have (on average 182.36363636363637) internal successors, (2006), 11 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:37:18,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:37:18,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 217 [2022-11-20 09:37:18,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:37:21,490 INFO L130 PetriNetUnfolder]: 8/3920 cut-off events. [2022-11-20 09:37:21,491 INFO L131 PetriNetUnfolder]: For 9440/9440 co-relation queries the response was YES. [2022-11-20 09:37:21,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9329 conditions, 3920 events. 8/3920 cut-off events. For 9440/9440 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 286 event pairs, 0 based on Foata normal form. 1/3908 useless extension candidates. Maximal degree in co-relation 5991. Up to 307 conditions per place. [2022-11-20 09:37:21,505 INFO L137 encePairwiseOnDemand]: 207/217 looper letters, 252 selfloop transitions, 108 changer transitions 0/581 dead transitions. [2022-11-20 09:37:21,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 581 transitions, 6132 flow [2022-11-20 09:37:21,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 09:37:21,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 09:37:21,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2912 transitions. [2022-11-20 09:37:21,510 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8387096774193549 [2022-11-20 09:37:21,510 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2912 transitions. [2022-11-20 09:37:21,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2912 transitions. [2022-11-20 09:37:21,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:37:21,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2912 transitions. [2022-11-20 09:37:21,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 182.0) internal successors, (2912), 16 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:37:21,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 217.0) internal successors, (3689), 17 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:37:21,519 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 217.0) internal successors, (3689), 17 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:37:21,519 INFO L175 Difference]: Start difference. First operand has 450 places, 551 transitions, 5223 flow. Second operand 16 states and 2912 transitions. [2022-11-20 09:37:21,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 581 transitions, 6132 flow [2022-11-20 09:37:21,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 581 transitions, 5735 flow, removed 74 selfloop flow, removed 21 redundant places. [2022-11-20 09:37:21,618 INFO L231 Difference]: Finished difference. Result has 444 places, 552 transitions, 5105 flow [2022-11-20 09:37:21,619 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=4819, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5105, PETRI_PLACES=444, PETRI_TRANSITIONS=552} [2022-11-20 09:37:21,619 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 237 predicate places. [2022-11-20 09:37:21,620 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 552 transitions, 5105 flow [2022-11-20 09:37:21,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 182.36363636363637) internal successors, (2006), 11 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:37:21,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:37:21,621 INFO L209 CegarLoopForPetriNet]: trace histogram [63, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 09:37:21,834 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forcibly destroying the process [2022-11-20 09:37:21,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 137 [2022-11-20 09:37:21,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 09:37:21,891 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:37:21,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:21,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1047335675, now seen corresponding path program 2 times [2022-11-20 09:37:21,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:37:21,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52361231] [2022-11-20 09:37:21,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:21,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:37:22,225 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:37:22,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1744294845] [2022-11-20 09:37:22,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:37:22,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:37:22,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:37:22,231 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:37:22,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 09:40:19,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:40:19,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:40:19,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 10566 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:40:19,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:40:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 77817 backedges. 5109 proven. 0 refuted. 0 times theorem prover too weak. 72708 trivial. 0 not checked. [2022-11-20 09:40:19,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:40:19,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:40:19,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52361231] [2022-11-20 09:40:19,622 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:40:19,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744294845] [2022-11-20 09:40:19,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744294845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:40:19,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:40:19,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:40:19,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680852893] [2022-11-20 09:40:19,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:40:19,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:40:19,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:40:19,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:40:19,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:40:19,627 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 217 [2022-11-20 09:40:19,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 552 transitions, 5105 flow. Second operand has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:40:19,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:40:19,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 217 [2022-11-20 09:40:19,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:40:23,419 INFO L130 PetriNetUnfolder]: 8/3892 cut-off events. [2022-11-20 09:40:23,419 INFO L131 PetriNetUnfolder]: For 8576/8576 co-relation queries the response was YES. [2022-11-20 09:40:23,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8981 conditions, 3892 events. 8/3892 cut-off events. For 8576/8576 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 257 event pairs, 0 based on Foata normal form. 28/3907 useless extension candidates. Maximal degree in co-relation 5849. Up to 423 conditions per place. [2022-11-20 09:40:23,430 INFO L137 encePairwiseOnDemand]: 208/217 looper letters, 39 selfloop transitions, 299 changer transitions 0/566 dead transitions. [2022-11-20 09:40:23,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 566 transitions, 5845 flow [2022-11-20 09:40:23,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 09:40:23,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 09:40:23,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2227 transitions. [2022-11-20 09:40:23,435 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8552227342549923 [2022-11-20 09:40:23,436 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2227 transitions. [2022-11-20 09:40:23,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2227 transitions. [2022-11-20 09:40:23,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:40:23,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2227 transitions. [2022-11-20 09:40:23,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 185.58333333333334) internal successors, (2227), 12 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:40:23,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 217.0) internal successors, (2821), 13 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:40:23,455 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 217.0) internal successors, (2821), 13 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:40:23,455 INFO L175 Difference]: Start difference. First operand has 444 places, 552 transitions, 5105 flow. Second operand 12 states and 2227 transitions. [2022-11-20 09:40:23,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 566 transitions, 5845 flow [2022-11-20 09:40:23,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 566 transitions, 5728 flow, removed 3 selfloop flow, removed 12 redundant places. [2022-11-20 09:40:23,543 INFO L231 Difference]: Finished difference. Result has 444 places, 553 transitions, 5717 flow [2022-11-20 09:40:23,543 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=4982, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5717, PETRI_PLACES=444, PETRI_TRANSITIONS=553} [2022-11-20 09:40:23,544 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 237 predicate places. [2022-11-20 09:40:23,544 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 553 transitions, 5717 flow [2022-11-20 09:40:23,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:40:23,545 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:40:23,546 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 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] [2022-11-20 09:40:23,758 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forcibly destroying the process [2022-11-20 09:40:23,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 137 [2022-11-20 09:40:23,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 09:40:23,820 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:40:23,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:40:23,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1032449126, now seen corresponding path program 3 times [2022-11-20 09:40:23,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:40:23,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717356709] [2022-11-20 09:40:23,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:40:23,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:40:24,300 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:40:24,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350343853] [2022-11-20 09:40:24,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:40:24,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:40:24,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:40:24,307 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:40:24,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 09:40:29,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 09:40:29,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:40:29,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:40:29,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:40:35,376 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-20 09:40:35,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:40:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-20 09:40:42,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:40:42,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717356709] [2022-11-20 09:40:42,401 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:40:42,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350343853] [2022-11-20 09:40:42,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350343853] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:40:42,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:40:42,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 09:40:42,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233111834] [2022-11-20 09:40:42,405 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:40:42,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:40:42,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:40:42,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:40:42,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:40:42,410 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 217 [2022-11-20 09:40:42,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 553 transitions, 5717 flow. Second operand has 16 states, 16 states have (on average 191.875) internal successors, (3070), 16 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:40:42,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:40:42,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 217 [2022-11-20 09:40:42,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:41:00,065 INFO L130 PetriNetUnfolder]: 12/8871 cut-off events. [2022-11-20 09:41:00,065 INFO L131 PetriNetUnfolder]: For 24298/24298 co-relation queries the response was YES. [2022-11-20 09:41:00,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20661 conditions, 8871 events. 12/8871 cut-off events. For 24298/24298 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 241 event pairs, 0 based on Foata normal form. 4/8862 useless extension candidates. Maximal degree in co-relation 17559. Up to 450 conditions per place. [2022-11-20 09:41:00,096 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 77 selfloop transitions, 21 changer transitions 0/618 dead transitions. [2022-11-20 09:41:00,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 618 transitions, 6253 flow [2022-11-20 09:41:00,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 09:41:00,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 09:41:00,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4021 transitions. [2022-11-20 09:41:00,101 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8823787579547948 [2022-11-20 09:41:00,101 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4021 transitions. [2022-11-20 09:41:00,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4021 transitions. [2022-11-20 09:41:00,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:41:00,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4021 transitions. [2022-11-20 09:41:00,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 191.47619047619048) internal successors, (4021), 21 states have internal predecessors, (4021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:41:00,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 217.0) internal successors, (4774), 22 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:41:00,113 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 217.0) internal successors, (4774), 22 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:41:00,113 INFO L175 Difference]: Start difference. First operand has 444 places, 553 transitions, 5717 flow. Second operand 21 states and 4021 transitions. [2022-11-20 09:41:00,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 618 transitions, 6253 flow [2022-11-20 09:41:00,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 618 transitions, 5860 flow, removed 4 selfloop flow, removed 8 redundant places. [2022-11-20 09:41:00,260 INFO L231 Difference]: Finished difference. Result has 461 places, 566 transitions, 5527 flow [2022-11-20 09:41:00,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=5328, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5527, PETRI_PLACES=461, PETRI_TRANSITIONS=566} [2022-11-20 09:41:00,261 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 254 predicate places. [2022-11-20 09:41:00,261 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 566 transitions, 5527 flow [2022-11-20 09:41:00,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 191.875) internal successors, (3070), 16 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:41:00,262 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:41:00,264 INFO L209 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:41:00,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 09:41:00,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:41:00,481 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:41:00,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:41:00,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1448848162, now seen corresponding path program 4 times [2022-11-20 09:41:00,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:41:00,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607197270] [2022-11-20 09:41:00,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:41:00,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:41:01,587 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:41:01,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136447429] [2022-11-20 09:41:01,588 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 09:41:01,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:41:01,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:41:01,595 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:41:01,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 09:41:11,359 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 09:41:11,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:41:11,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 31930 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 09:41:11,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:41:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 901558 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125055 trivial. 0 not checked. [2022-11-20 09:41:26,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:41:42,503 INFO L134 CoverageAnalysis]: Checked inductivity of 901558 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125055 trivial. 0 not checked. [2022-11-20 09:41:42,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:41:42,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607197270] [2022-11-20 09:41:42,503 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:41:42,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136447429] [2022-11-20 09:41:42,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136447429] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:41:42,504 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:41:42,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2022-11-20 09:41:42,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371674112] [2022-11-20 09:41:42,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:41:42,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 09:41:42,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:41:42,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 09:41:42,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-20 09:41:42,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 217 [2022-11-20 09:41:42,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 566 transitions, 5527 flow. Second operand has 21 states, 21 states have (on average 192.42857142857142) internal successors, (4041), 21 states have internal predecessors, (4041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:41:42,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:41:42,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 217 [2022-11-20 09:41:42,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:42:17,109 INFO L130 PetriNetUnfolder]: 15/12612 cut-off events. [2022-11-20 09:42:17,110 INFO L131 PetriNetUnfolder]: For 32632/32632 co-relation queries the response was YES. [2022-11-20 09:42:17,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28965 conditions, 12612 events. 15/12612 cut-off events. For 32632/32632 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 245 event pairs, 0 based on Foata normal form. 3/12602 useless extension candidates. Maximal degree in co-relation 25928. Up to 720 conditions per place. [2022-11-20 09:42:17,168 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 107 selfloop transitions, 30 changer transitions 0/657 dead transitions. [2022-11-20 09:42:17,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 657 transitions, 6267 flow [2022-11-20 09:42:17,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 09:42:17,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 09:42:17,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5739 transitions. [2022-11-20 09:42:17,174 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8815668202764977 [2022-11-20 09:42:17,175 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5739 transitions. [2022-11-20 09:42:17,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5739 transitions. [2022-11-20 09:42:17,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:42:17,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5739 transitions. [2022-11-20 09:42:17,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 191.3) internal successors, (5739), 30 states have internal predecessors, (5739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:42:17,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 217.0) internal successors, (6727), 31 states have internal predecessors, (6727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:42:17,191 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 217.0) internal successors, (6727), 31 states have internal predecessors, (6727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:42:17,191 INFO L175 Difference]: Start difference. First operand has 461 places, 566 transitions, 5527 flow. Second operand 30 states and 5739 transitions. [2022-11-20 09:42:17,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 657 transitions, 6267 flow [2022-11-20 09:42:17,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 657 transitions, 6255 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 09:42:17,396 INFO L231 Difference]: Finished difference. Result has 488 places, 576 transitions, 5726 flow [2022-11-20 09:42:17,397 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=5515, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5726, PETRI_PLACES=488, PETRI_TRANSITIONS=576} [2022-11-20 09:42:17,397 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 281 predicate places. [2022-11-20 09:42:17,397 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 576 transitions, 5726 flow [2022-11-20 09:42:17,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 192.42857142857142) internal successors, (4041), 21 states have internal predecessors, (4041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:42:17,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:42:17,402 INFO L209 CegarLoopForPetriNet]: trace histogram [300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:42:17,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 09:42:17,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:42:17,627 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:42:17,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:42:17,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1728833935, now seen corresponding path program 5 times [2022-11-20 09:42:17,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:42:17,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083537522] [2022-11-20 09:42:17,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:42:17,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:42:19,447 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:42:19,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1513908801] [2022-11-20 09:42:19,448 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 09:42:19,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:42:19,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:42:19,464 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:42:19,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f35a23c-d662-489a-a97f-f5a079395d94/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process