./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/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_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/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_d9770ace-06e4-4a3c-b404-9ea3c708ec91/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 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a --- 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 11:34:54,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:34:54,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:34:54,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:34:54,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:34:54,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:34:54,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:34:54,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:34:54,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:34:54,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:34:54,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:34:54,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:34:54,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:34:54,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:34:54,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:34:54,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:34:54,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:34:54,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:34:54,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:34:54,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:34:54,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:34:54,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:34:54,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:34:54,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:34:54,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:34:54,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:34:54,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:34:54,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:34:54,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:34:54,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:34:54,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:34:54,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:34:54,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:34:54,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:34:54,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:34:54,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:34:54,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:34:54,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:34:54,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:34:54,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:34:54,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:34:54,937 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:34:54,992 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:34:54,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:34:54,994 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:34:54,994 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:34:54,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:34:54,996 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:34:54,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:34:54,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:34:54,998 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:34:54,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:34:55,000 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:34:55,001 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:34:55,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:34:55,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:34:55,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:34:55,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:34:55,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:34:55,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:34:55,003 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:34:55,003 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:34:55,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:34:55,004 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:34:55,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:34:55,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:34:55,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:34:55,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:34:55,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:34:55,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:34:55,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:34:55,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:34:55,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:34:55,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:34:55,009 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:34:55,009 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:34:55,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:34:55,009 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_d9770ace-06e4-4a3c-b404-9ea3c708ec91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a [2022-11-20 11:34:55,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:34:55,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:34:55,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:34:55,383 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:34:55,384 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:34:55,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2022-11-20 11:34:59,278 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:34:59,694 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:34:59,695 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2022-11-20 11:34:59,714 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/data/9a075bdb0/64f1aaea0dcc44feb3a36ada1643113c/FLAG32971780e [2022-11-20 11:34:59,744 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/data/9a075bdb0/64f1aaea0dcc44feb3a36ada1643113c [2022-11-20 11:34:59,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:34:59,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:34:59,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:34:59,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:34:59,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:34:59,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:34:59" (1/1) ... [2022-11-20 11:34:59,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603bedbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:59, skipping insertion in model container [2022-11-20 11:34:59,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:34:59" (1/1) ... [2022-11-20 11:34:59,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:34:59,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:35:00,444 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:35:00,445 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:35:00,449 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:35:00,453 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:35:00,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:35:00,508 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:35:00,553 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:35:00,553 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:35:00,554 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:35:00,555 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:35:00,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:35:00,690 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:35:00,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:00 WrapperNode [2022-11-20 11:35:00,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:35:00,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:35:00,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:35:00,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:35:00,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:00" (1/1) ... [2022-11-20 11:35:00,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:00" (1/1) ... [2022-11-20 11:35:00,830 INFO L138 Inliner]: procedures = 273, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 166 [2022-11-20 11:35:00,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:35:00,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:35:00,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:35:00,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:35:00,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:00" (1/1) ... [2022-11-20 11:35:00,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:00" (1/1) ... [2022-11-20 11:35:00,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:00" (1/1) ... [2022-11-20 11:35:00,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:00" (1/1) ... [2022-11-20 11:35:00,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:00" (1/1) ... [2022-11-20 11:35:00,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:00" (1/1) ... [2022-11-20 11:35:00,912 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:00" (1/1) ... [2022-11-20 11:35:00,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:00" (1/1) ... [2022-11-20 11:35:00,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:35:00,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:35:00,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:35:00,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:35:00,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:00" (1/1) ... [2022-11-20 11:35:00,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:35:00,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:00,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:35:01,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:35:01,040 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-20 11:35:01,041 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-20 11:35:01,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:35:01,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:35:01,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:35:01,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:35:01,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:35:01,042 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:35:01,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:35:01,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:35:01,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:35:01,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:35:01,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:35:01,045 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 11:35:01,310 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:35:01,313 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:35:01,802 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:35:01,815 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:35:01,815 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 11:35:01,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:01 BoogieIcfgContainer [2022-11-20 11:35:01,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:35:01,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:35:01,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:35:01,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:35:01,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:34:59" (1/3) ... [2022-11-20 11:35:01,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b0a874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:35:01, skipping insertion in model container [2022-11-20 11:35:01,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:00" (2/3) ... [2022-11-20 11:35:01,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b0a874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:35:01, skipping insertion in model container [2022-11-20 11:35:01,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:01" (3/3) ... [2022-11-20 11:35:01,831 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2022-11-20 11:35:01,844 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:35:01,859 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:35:01,859 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-20 11:35:01,859 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:35:02,058 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:35:02,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 259 transitions, 528 flow [2022-11-20 11:35:02,299 INFO L130 PetriNetUnfolder]: 17/257 cut-off events. [2022-11-20 11:35:02,300 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:35:02,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 257 events. 17/257 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 580 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 198. Up to 2 conditions per place. [2022-11-20 11:35:02,313 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 259 transitions, 528 flow [2022-11-20 11:35:02,329 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 257 transitions, 520 flow [2022-11-20 11:35:02,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:35:02,353 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;@10d23037, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:35:02,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-20 11:35:02,370 INFO L130 PetriNetUnfolder]: 2/55 cut-off events. [2022-11-20 11:35:02,370 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:35:02,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:35:02,372 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] [2022-11-20 11:35:02,373 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 11:35:02,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:02,380 INFO L85 PathProgramCache]: Analyzing trace with hash -784437459, now seen corresponding path program 1 times [2022-11-20 11:35:02,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:02,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816947282] [2022-11-20 11:35:02,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:02,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:02,563 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:35:02,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775021789] [2022-11-20 11:35:02,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:02,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:02,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:02,570 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:02,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:35:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:02,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:35:02,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:02,861 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 11:35:02,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:35:02,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:02,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816947282] [2022-11-20 11:35:02,863 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:35:02,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775021789] [2022-11-20 11:35:02,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775021789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:02,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:35:02,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:35:02,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137363956] [2022-11-20 11:35:02,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:02,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:35:02,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:02,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:35:02,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:35:02,935 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 259 [2022-11-20 11:35:02,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 257 transitions, 520 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states 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 11:35:02,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:02,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 259 [2022-11-20 11:35:02,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:35:03,200 INFO L130 PetriNetUnfolder]: 8/307 cut-off events. [2022-11-20 11:35:03,215 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:35:03,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 307 events. 8/307 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 792 event pairs, 0 based on Foata normal form. 10/287 useless extension candidates. Maximal degree in co-relation 275. Up to 17 conditions per place. [2022-11-20 11:35:03,220 INFO L137 encePairwiseOnDemand]: 244/259 looper letters, 23 selfloop transitions, 2 changer transitions 2/256 dead transitions. [2022-11-20 11:35:03,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 256 transitions, 568 flow [2022-11-20 11:35:03,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:35:03,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:35:03,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 739 transitions. [2022-11-20 11:35:03,251 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9510939510939511 [2022-11-20 11:35:03,252 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 739 transitions. [2022-11-20 11:35:03,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 739 transitions. [2022-11-20 11:35:03,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:35:03,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 739 transitions. [2022-11-20 11:35:03,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.33333333333334) internal successors, (739), 3 states have internal predecessors, (739), 0 states have call successors, (0), 0 states 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 11:35:03,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states 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 11:35:03,328 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states 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 11:35:03,331 INFO L175 Difference]: Start difference. First operand has 247 places, 257 transitions, 520 flow. Second operand 3 states and 739 transitions. [2022-11-20 11:35:03,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 256 transitions, 568 flow [2022-11-20 11:35:03,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 256 transitions, 566 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:35:03,355 INFO L231 Difference]: Finished difference. Result has 248 places, 246 transitions, 510 flow [2022-11-20 11:35:03,358 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=510, PETRI_PLACES=248, PETRI_TRANSITIONS=246} [2022-11-20 11:35:03,368 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 1 predicate places. [2022-11-20 11:35:03,369 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 246 transitions, 510 flow [2022-11-20 11:35:03,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states 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 11:35:03,375 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:35:03,376 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] [2022-11-20 11:35:03,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:03,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:03,583 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 11:35:03,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:03,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1452242165, now seen corresponding path program 1 times [2022-11-20 11:35:03,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:03,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003442102] [2022-11-20 11:35:03,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:03,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:03,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:35:03,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:03,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003442102] [2022-11-20 11:35:03,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003442102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:03,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:35:03,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:35:03,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691586242] [2022-11-20 11:35:03,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:03,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:35:03,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:03,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:35:03,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:35:03,806 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 259 [2022-11-20 11:35:03,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 246 transitions, 510 flow. Second operand has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states 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 11:35:03,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:03,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 259 [2022-11-20 11:35:03,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:35:03,964 INFO L130 PetriNetUnfolder]: 8/389 cut-off events. [2022-11-20 11:35:03,965 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:35:03,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 389 events. 8/389 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 867 event pairs, 0 based on Foata normal form. 2/362 useless extension candidates. Maximal degree in co-relation 294. Up to 22 conditions per place. [2022-11-20 11:35:03,969 INFO L137 encePairwiseOnDemand]: 254/259 looper letters, 17 selfloop transitions, 2 changer transitions 0/252 dead transitions. [2022-11-20 11:35:03,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 252 transitions, 560 flow [2022-11-20 11:35:03,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:35:03,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:35:03,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 730 transitions. [2022-11-20 11:35:03,988 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9395109395109396 [2022-11-20 11:35:03,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 730 transitions. [2022-11-20 11:35:03,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 730 transitions. [2022-11-20 11:35:03,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:35:03,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 730 transitions. [2022-11-20 11:35:03,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states 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 11:35:03,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states 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 11:35:03,997 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states 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 11:35:03,997 INFO L175 Difference]: Start difference. First operand has 248 places, 246 transitions, 510 flow. Second operand 3 states and 730 transitions. [2022-11-20 11:35:03,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 252 transitions, 560 flow [2022-11-20 11:35:04,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 252 transitions, 558 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:35:04,013 INFO L231 Difference]: Finished difference. Result has 248 places, 247 transitions, 524 flow [2022-11-20 11:35:04,014 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=524, PETRI_PLACES=248, PETRI_TRANSITIONS=247} [2022-11-20 11:35:04,028 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 1 predicate places. [2022-11-20 11:35:04,028 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 247 transitions, 524 flow [2022-11-20 11:35:04,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states 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 11:35:04,030 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:35:04,030 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] [2022-11-20 11:35:04,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:35:04,031 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 11:35:04,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:04,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1781092602, now seen corresponding path program 1 times [2022-11-20 11:35:04,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:04,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289971820] [2022-11-20 11:35:04,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:04,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:04,113 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:35:04,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469097510] [2022-11-20 11:35:04,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:04,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:04,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:04,140 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:04,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:35:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:04,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:35:04,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:04,658 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 11:35:04,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:35:04,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:04,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289971820] [2022-11-20 11:35:04,659 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:35:04,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469097510] [2022-11-20 11:35:04,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469097510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:04,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:35:04,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:35:04,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366062203] [2022-11-20 11:35:04,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:04,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:35:04,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:04,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:35:04,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:35:04,666 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-20 11:35:04,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 247 transitions, 524 flow. Second operand has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:04,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:04,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-20 11:35:04,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:35:04,833 INFO L130 PetriNetUnfolder]: 8/389 cut-off events. [2022-11-20 11:35:04,834 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-20 11:35:04,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 389 events. 8/389 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 864 event pairs, 0 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 247. Up to 30 conditions per place. [2022-11-20 11:35:04,838 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 23 selfloop transitions, 5 changer transitions 0/256 dead transitions. [2022-11-20 11:35:04,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 256 transitions, 598 flow [2022-11-20 11:35:04,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:35:04,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:35:04,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1184 transitions. [2022-11-20 11:35:04,874 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9142857142857143 [2022-11-20 11:35:04,874 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1184 transitions. [2022-11-20 11:35:04,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1184 transitions. [2022-11-20 11:35:04,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:35:04,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1184 transitions. [2022-11-20 11:35:04,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 236.8) internal successors, (1184), 5 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states 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 11:35:04,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 11:35:04,886 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 11:35:04,887 INFO L175 Difference]: Start difference. First operand has 248 places, 247 transitions, 524 flow. Second operand 5 states and 1184 transitions. [2022-11-20 11:35:04,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 256 transitions, 598 flow [2022-11-20 11:35:04,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 256 transitions, 596 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:35:04,895 INFO L231 Difference]: Finished difference. Result has 255 places, 250 transitions, 556 flow [2022-11-20 11:35:04,896 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=556, PETRI_PLACES=255, PETRI_TRANSITIONS=250} [2022-11-20 11:35:04,897 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 8 predicate places. [2022-11-20 11:35:04,897 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 250 transitions, 556 flow [2022-11-20 11:35:04,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:04,899 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:35:04,899 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] [2022-11-20 11:35:04,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:05,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-20 11:35:05,107 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 11:35:05,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:05,107 INFO L85 PathProgramCache]: Analyzing trace with hash 620704563, now seen corresponding path program 1 times [2022-11-20 11:35:05,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:05,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741473983] [2022-11-20 11:35:05,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:05,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:05,192 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:35:05,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1061960682] [2022-11-20 11:35:05,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:05,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:05,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:05,204 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:05,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:35:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:05,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:35:05,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:05,515 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 11:35:05,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:35:05,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:05,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741473983] [2022-11-20 11:35:05,517 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:35:05,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061960682] [2022-11-20 11:35:05,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061960682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:05,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:35:05,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:35:05,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198705238] [2022-11-20 11:35:05,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:05,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:35:05,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:05,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:35:05,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:35:05,525 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-20 11:35:05,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 250 transitions, 556 flow. Second operand has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:05,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:05,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-20 11:35:05,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:35:05,656 INFO L130 PetriNetUnfolder]: 8/385 cut-off events. [2022-11-20 11:35:05,657 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-20 11:35:05,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 385 events. 8/385 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 856 event pairs, 0 based on Foata normal form. 4/370 useless extension candidates. Maximal degree in co-relation 296. Up to 28 conditions per place. [2022-11-20 11:35:05,660 INFO L137 encePairwiseOnDemand]: 255/259 looper letters, 16 selfloop transitions, 5 changer transitions 0/249 dead transitions. [2022-11-20 11:35:05,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 249 transitions, 596 flow [2022-11-20 11:35:05,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:35:05,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:35:05,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 943 transitions. [2022-11-20 11:35:05,665 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9102316602316602 [2022-11-20 11:35:05,665 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 943 transitions. [2022-11-20 11:35:05,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 943 transitions. [2022-11-20 11:35:05,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:35:05,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 943 transitions. [2022-11-20 11:35:05,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 235.75) internal successors, (943), 4 states have internal predecessors, (943), 0 states have call successors, (0), 0 states 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 11:35:05,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states 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 11:35:05,674 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states 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 11:35:05,674 INFO L175 Difference]: Start difference. First operand has 255 places, 250 transitions, 556 flow. Second operand 4 states and 943 transitions. [2022-11-20 11:35:05,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 249 transitions, 596 flow [2022-11-20 11:35:05,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 249 transitions, 587 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:35:05,683 INFO L231 Difference]: Finished difference. Result has 255 places, 249 transitions, 558 flow [2022-11-20 11:35:05,683 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=558, PETRI_PLACES=255, PETRI_TRANSITIONS=249} [2022-11-20 11:35:05,684 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 8 predicate places. [2022-11-20 11:35:05,685 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 249 transitions, 558 flow [2022-11-20 11:35:05,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:05,686 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:35:05,686 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 11:35:05,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:05,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:05,894 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 11:35:05,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:05,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1850046175, now seen corresponding path program 1 times [2022-11-20 11:35:05,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:05,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112285526] [2022-11-20 11:35:05,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:05,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:05,947 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:35:05,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1595244453] [2022-11-20 11:35:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:05,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:05,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:05,953 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:05,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:35:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:06,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:35:06,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:06,265 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 11:35:06,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:35:06,378 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 11:35:06,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:06,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112285526] [2022-11-20 11:35:06,379 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:35:06,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595244453] [2022-11-20 11:35:06,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595244453] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:35:06,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:35:06,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 11:35:06,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144543285] [2022-11-20 11:35:06,381 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:35:06,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:35:06,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:06,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:35:06,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:35:06,385 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-20 11:35:06,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 249 transitions, 558 flow. Second operand has 8 states, 8 states have (on average 233.875) internal successors, (1871), 8 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states 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 11:35:06,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:06,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-20 11:35:06,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:35:06,656 INFO L130 PetriNetUnfolder]: 8/471 cut-off events. [2022-11-20 11:35:06,656 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-20 11:35:06,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 471 events. 8/471 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 604 event pairs, 0 based on Foata normal form. 6/458 useless extension candidates. Maximal degree in co-relation 363. Up to 22 conditions per place. [2022-11-20 11:35:06,660 INFO L137 encePairwiseOnDemand]: 252/259 looper letters, 29 selfloop transitions, 10 changer transitions 0/267 dead transitions. [2022-11-20 11:35:06,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 267 transitions, 690 flow [2022-11-20 11:35:06,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:35:06,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:35:06,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2120 transitions. [2022-11-20 11:35:06,668 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9094809094809094 [2022-11-20 11:35:06,668 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2120 transitions. [2022-11-20 11:35:06,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2120 transitions. [2022-11-20 11:35:06,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:35:06,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2120 transitions. [2022-11-20 11:35:06,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 235.55555555555554) internal successors, (2120), 9 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:06,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states 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 11:35:06,688 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states 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 11:35:06,688 INFO L175 Difference]: Start difference. First operand has 255 places, 249 transitions, 558 flow. Second operand 9 states and 2120 transitions. [2022-11-20 11:35:06,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 267 transitions, 690 flow [2022-11-20 11:35:06,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 267 transitions, 677 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:35:06,698 INFO L231 Difference]: Finished difference. Result has 266 places, 253 transitions, 608 flow [2022-11-20 11:35:06,699 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=608, PETRI_PLACES=266, PETRI_TRANSITIONS=253} [2022-11-20 11:35:06,700 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 19 predicate places. [2022-11-20 11:35:06,700 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 253 transitions, 608 flow [2022-11-20 11:35:06,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 233.875) internal successors, (1871), 8 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states 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 11:35:06,702 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:35:06,702 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] [2022-11-20 11:35:06,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:06,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:06,910 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 11:35:06,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:06,911 INFO L85 PathProgramCache]: Analyzing trace with hash 505126278, now seen corresponding path program 1 times [2022-11-20 11:35:06,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:06,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697845547] [2022-11-20 11:35:06,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:06,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:06,980 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:35:06,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [631564236] [2022-11-20 11:35:06,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:06,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:06,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:06,982 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:06,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:35:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:07,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:35:07,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:07,549 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 11:35:07,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:35:07,893 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 11:35:07,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:07,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697845547] [2022-11-20 11:35:07,894 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:35:07,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631564236] [2022-11-20 11:35:07,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631564236] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:35:07,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:35:07,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 11:35:07,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532804192] [2022-11-20 11:35:07,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:35:07,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:35:07,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:07,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:35:07,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:35:07,908 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-20 11:35:07,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 253 transitions, 608 flow. Second operand has 14 states, 14 states have (on average 234.64285714285714) internal successors, (3285), 14 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states 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 11:35:07,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:07,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-20 11:35:07,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:35:08,339 INFO L130 PetriNetUnfolder]: 15/741 cut-off events. [2022-11-20 11:35:08,339 INFO L131 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2022-11-20 11:35:08,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 741 events. 15/741 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1731 event pairs, 0 based on Foata normal form. 4/707 useless extension candidates. Maximal degree in co-relation 631. Up to 19 conditions per place. [2022-11-20 11:35:08,344 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 37 selfloop transitions, 16 changer transitions 0/281 dead transitions. [2022-11-20 11:35:08,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 281 transitions, 822 flow [2022-11-20 11:35:08,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:35:08,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 11:35:08,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3520 transitions. [2022-11-20 11:35:08,354 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9060489060489061 [2022-11-20 11:35:08,354 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3520 transitions. [2022-11-20 11:35:08,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3520 transitions. [2022-11-20 11:35:08,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:35:08,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3520 transitions. [2022-11-20 11:35:08,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 234.66666666666666) internal successors, (3520), 15 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states 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 11:35:08,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 259.0) internal successors, (4144), 16 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states 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 11:35:08,377 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 259.0) internal successors, (4144), 16 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states 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 11:35:08,377 INFO L175 Difference]: Start difference. First operand has 266 places, 253 transitions, 608 flow. Second operand 15 states and 3520 transitions. [2022-11-20 11:35:08,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 281 transitions, 822 flow [2022-11-20 11:35:08,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 281 transitions, 804 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-20 11:35:08,389 INFO L231 Difference]: Finished difference. Result has 275 places, 257 transitions, 657 flow [2022-11-20 11:35:08,390 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=657, PETRI_PLACES=275, PETRI_TRANSITIONS=257} [2022-11-20 11:35:08,391 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 28 predicate places. [2022-11-20 11:35:08,391 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 257 transitions, 657 flow [2022-11-20 11:35:08,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 234.64285714285714) internal successors, (3285), 14 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states 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 11:35:08,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:35:08,394 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] [2022-11-20 11:35:08,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 11:35:08,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 11:35:08,604 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 11:35:08,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:08,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1429378977, now seen corresponding path program 2 times [2022-11-20 11:35:08,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:08,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240126301] [2022-11-20 11:35:08,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:08,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:08,652 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:35:08,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [213594388] [2022-11-20 11:35:08,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:35:08,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:08,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:08,654 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:08,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:35:08,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:35:08,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:35:08,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:35:08,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:09,148 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 11:35:09,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:35:09,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:09,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240126301] [2022-11-20 11:35:09,153 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:35:09,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213594388] [2022-11-20 11:35:09,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213594388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:09,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:35:09,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:35:09,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720410182] [2022-11-20 11:35:09,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:09,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:35:09,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:09,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:35:09,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:35:09,158 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 259 [2022-11-20 11:35:09,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 257 transitions, 657 flow. Second operand has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:09,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:09,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 259 [2022-11-20 11:35:09,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:35:09,409 INFO L130 PetriNetUnfolder]: 15/741 cut-off events. [2022-11-20 11:35:09,409 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-11-20 11:35:09,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 981 conditions, 741 events. 15/741 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1730 event pairs, 0 based on Foata normal form. 0/705 useless extension candidates. Maximal degree in co-relation 628. Up to 50 conditions per place. [2022-11-20 11:35:09,413 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 29 selfloop transitions, 5 changer transitions 0/269 dead transitions. [2022-11-20 11:35:09,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 269 transitions, 749 flow [2022-11-20 11:35:09,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:35:09,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:35:09,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1175 transitions. [2022-11-20 11:35:09,418 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9073359073359073 [2022-11-20 11:35:09,418 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1175 transitions. [2022-11-20 11:35:09,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1175 transitions. [2022-11-20 11:35:09,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:35:09,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1175 transitions. [2022-11-20 11:35:09,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states 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 11:35:09,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 11:35:09,428 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 11:35:09,428 INFO L175 Difference]: Start difference. First operand has 275 places, 257 transitions, 657 flow. Second operand 5 states and 1175 transitions. [2022-11-20 11:35:09,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 269 transitions, 749 flow [2022-11-20 11:35:09,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 269 transitions, 690 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-20 11:35:09,437 INFO L231 Difference]: Finished difference. Result has 270 places, 260 transitions, 632 flow [2022-11-20 11:35:09,438 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=632, PETRI_PLACES=270, PETRI_TRANSITIONS=260} [2022-11-20 11:35:09,439 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 23 predicate places. [2022-11-20 11:35:09,439 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 260 transitions, 632 flow [2022-11-20 11:35:09,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:09,440 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:35:09,440 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] [2022-11-20 11:35:09,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:09,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:09,648 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 11:35:09,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:09,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1361075661, now seen corresponding path program 1 times [2022-11-20 11:35:09,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:09,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484724517] [2022-11-20 11:35:09,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:09,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:09,706 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:35:09,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634779799] [2022-11-20 11:35:09,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:09,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:09,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:09,708 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:09,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:35:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:10,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:35:10,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:10,288 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 11:35:10,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:35:10,569 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 11:35:10,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:10,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484724517] [2022-11-20 11:35:10,570 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:35:10,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634779799] [2022-11-20 11:35:10,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634779799] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:35:10,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:35:10,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 11:35:10,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067146249] [2022-11-20 11:35:10,572 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:35:10,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:35:10,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:10,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:35:10,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:35:10,580 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-20 11:35:10,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 260 transitions, 632 flow. Second operand has 16 states, 16 states have (on average 234.6875) internal successors, (3755), 16 states have internal predecessors, (3755), 0 states have call successors, (0), 0 states 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 11:35:10,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:10,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-20 11:35:10,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:35:11,102 INFO L130 PetriNetUnfolder]: 8/805 cut-off events. [2022-11-20 11:35:11,103 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2022-11-20 11:35:11,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1116 conditions, 805 events. 8/805 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 627 event pairs, 0 based on Foata normal form. 8/798 useless extension candidates. Maximal degree in co-relation 650. Up to 20 conditions per place. [2022-11-20 11:35:11,107 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 60 selfloop transitions, 22 changer transitions 0/313 dead transitions. [2022-11-20 11:35:11,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 313 transitions, 989 flow [2022-11-20 11:35:11,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:35:11,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:35:11,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4936 transitions. [2022-11-20 11:35:11,119 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9075197646626219 [2022-11-20 11:35:11,119 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4936 transitions. [2022-11-20 11:35:11,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4936 transitions. [2022-11-20 11:35:11,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:35:11,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4936 transitions. [2022-11-20 11:35:11,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 235.04761904761904) internal successors, (4936), 21 states have internal predecessors, (4936), 0 states have call successors, (0), 0 states 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 11:35:11,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 259.0) internal successors, (5698), 22 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states 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 11:35:11,168 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 259.0) internal successors, (5698), 22 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states 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 11:35:11,168 INFO L175 Difference]: Start difference. First operand has 270 places, 260 transitions, 632 flow. Second operand 21 states and 4936 transitions. [2022-11-20 11:35:11,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 313 transitions, 989 flow [2022-11-20 11:35:11,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 313 transitions, 979 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-20 11:35:11,177 INFO L231 Difference]: Finished difference. Result has 294 places, 269 transitions, 742 flow [2022-11-20 11:35:11,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=742, PETRI_PLACES=294, PETRI_TRANSITIONS=269} [2022-11-20 11:35:11,183 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 47 predicate places. [2022-11-20 11:35:11,183 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 269 transitions, 742 flow [2022-11-20 11:35:11,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 234.6875) internal successors, (3755), 16 states have internal predecessors, (3755), 0 states have call successors, (0), 0 states 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 11:35:11,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:35:11,188 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] [2022-11-20 11:35:11,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:11,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:11,397 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 11:35:11,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:11,397 INFO L85 PathProgramCache]: Analyzing trace with hash -984629043, now seen corresponding path program 2 times [2022-11-20 11:35:11,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:11,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550519974] [2022-11-20 11:35:11,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:11,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:11,485 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:35:11,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158979518] [2022-11-20 11:35:11,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:35:11,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:11,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:11,488 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:11,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:35:11,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:35:11,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:35:11,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:35:11,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:12,360 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 11:35:12,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:35:12,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:12,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550519974] [2022-11-20 11:35:12,362 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:35:12,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158979518] [2022-11-20 11:35:12,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158979518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:12,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:35:12,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:35:12,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583562897] [2022-11-20 11:35:12,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:12,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:35:12,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:12,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:35:12,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:35:12,366 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 259 [2022-11-20 11:35:12,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 269 transitions, 742 flow. Second operand has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states 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 11:35:12,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:12,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 259 [2022-11-20 11:35:12,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:35:12,622 INFO L130 PetriNetUnfolder]: 8/803 cut-off events. [2022-11-20 11:35:12,622 INFO L131 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-11-20 11:35:12,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1122 conditions, 803 events. 8/803 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 622 event pairs, 0 based on Foata normal form. 2/790 useless extension candidates. Maximal degree in co-relation 651. Up to 80 conditions per place. [2022-11-20 11:35:12,626 INFO L137 encePairwiseOnDemand]: 255/259 looper letters, 18 selfloop transitions, 5 changer transitions 0/267 dead transitions. [2022-11-20 11:35:12,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 267 transitions, 778 flow [2022-11-20 11:35:12,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:35:12,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:35:12,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 933 transitions. [2022-11-20 11:35:12,630 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9005791505791506 [2022-11-20 11:35:12,630 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 933 transitions. [2022-11-20 11:35:12,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 933 transitions. [2022-11-20 11:35:12,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:35:12,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 933 transitions. [2022-11-20 11:35:12,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:12,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states 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 11:35:12,637 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states 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 11:35:12,637 INFO L175 Difference]: Start difference. First operand has 294 places, 269 transitions, 742 flow. Second operand 4 states and 933 transitions. [2022-11-20 11:35:12,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 267 transitions, 778 flow [2022-11-20 11:35:12,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 267 transitions, 755 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-20 11:35:12,645 INFO L231 Difference]: Finished difference. Result has 285 places, 267 transitions, 719 flow [2022-11-20 11:35:12,646 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=719, PETRI_PLACES=285, PETRI_TRANSITIONS=267} [2022-11-20 11:35:12,647 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 38 predicate places. [2022-11-20 11:35:12,648 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 267 transitions, 719 flow [2022-11-20 11:35:12,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states 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 11:35:12,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:35:12,649 INFO L209 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2022-11-20 11:35:12,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:12,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:12,856 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 11:35:12,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:12,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1280389661, now seen corresponding path program 1 times [2022-11-20 11:35:12,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:12,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474941120] [2022-11-20 11:35:12,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:12,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:12,964 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:35:12,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [959760875] [2022-11-20 11:35:12,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:12,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:12,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:12,967 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:12,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:35:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:13,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 1490 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:35:13,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 313 proven. 868 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:35:14,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:35:15,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 313 proven. 868 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:35:15,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:15,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474941120] [2022-11-20 11:35:15,089 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:35:15,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959760875] [2022-11-20 11:35:15,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959760875] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:35:15,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:35:15,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-20 11:35:15,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626302942] [2022-11-20 11:35:15,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:35:15,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 11:35:15,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:15,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 11:35:15,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-20 11:35:15,106 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-20 11:35:15,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 267 transitions, 719 flow. Second operand has 32 states, 32 states have (on average 235.4375) internal successors, (7534), 32 states have internal predecessors, (7534), 0 states have call successors, (0), 0 states 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 11:35:15,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:15,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-20 11:35:15,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:35:16,603 INFO L130 PetriNetUnfolder]: 8/1475 cut-off events. [2022-11-20 11:35:16,603 INFO L131 PetriNetUnfolder]: For 725/725 co-relation queries the response was YES. [2022-11-20 11:35:16,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2236 conditions, 1475 events. 8/1475 cut-off events. For 725/725 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 662 event pairs, 0 based on Foata normal form. 16/1476 useless extension candidates. Maximal degree in co-relation 1240. Up to 38 conditions per place. [2022-11-20 11:35:16,609 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 124 selfloop transitions, 46 changer transitions 0/399 dead transitions. [2022-11-20 11:35:16,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 399 transitions, 1655 flow [2022-11-20 11:35:16,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 11:35:16,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-20 11:35:16,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 10572 transitions. [2022-11-20 11:35:16,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9070785070785071 [2022-11-20 11:35:16,632 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 10572 transitions. [2022-11-20 11:35:16,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 10572 transitions. [2022-11-20 11:35:16,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:35:16,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 10572 transitions. [2022-11-20 11:35:16,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 234.93333333333334) internal successors, (10572), 45 states have internal predecessors, (10572), 0 states have call successors, (0), 0 states 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 11:35:16,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 259.0) internal successors, (11914), 46 states have internal predecessors, (11914), 0 states have call successors, (0), 0 states 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 11:35:16,693 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 259.0) internal successors, (11914), 46 states have internal predecessors, (11914), 0 states have call successors, (0), 0 states 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 11:35:16,693 INFO L175 Difference]: Start difference. First operand has 285 places, 267 transitions, 719 flow. Second operand 45 states and 10572 transitions. [2022-11-20 11:35:16,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 399 transitions, 1655 flow [2022-11-20 11:35:16,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 399 transitions, 1645 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:35:16,708 INFO L231 Difference]: Finished difference. Result has 335 places, 292 transitions, 1032 flow [2022-11-20 11:35:16,710 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1032, PETRI_PLACES=335, PETRI_TRANSITIONS=292} [2022-11-20 11:35:16,711 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 88 predicate places. [2022-11-20 11:35:16,711 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 292 transitions, 1032 flow [2022-11-20 11:35:16,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 235.4375) internal successors, (7534), 32 states have internal predecessors, (7534), 0 states have call successors, (0), 0 states 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 11:35:16,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:35:16,714 INFO L209 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 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] [2022-11-20 11:35:16,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:16,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:16,924 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 11:35:16,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:16,924 INFO L85 PathProgramCache]: Analyzing trace with hash -808702947, now seen corresponding path program 2 times [2022-11-20 11:35:16,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:16,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779036129] [2022-11-20 11:35:16,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:16,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:17,094 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:35:17,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282603501] [2022-11-20 11:35:17,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:35:17,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:17,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:17,099 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:17,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:35:18,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:35:18,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:35:18,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 2826 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 11:35:18,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:19,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4979 backedges. 657 proven. 4320 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:35:19,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:35:21,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4979 backedges. 657 proven. 4320 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:35:21,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:21,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779036129] [2022-11-20 11:35:21,942 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:35:21,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282603501] [2022-11-20 11:35:21,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282603501] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:35:21,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:35:21,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-20 11:35:21,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035224691] [2022-11-20 11:35:21,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:35:21,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-20 11:35:21,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:21,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-20 11:35:21,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-20 11:35:21,968 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-20 11:35:21,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 292 transitions, 1032 flow. Second operand has 61 states, 61 states have (on average 235.54098360655738) internal successors, (14368), 61 states have internal predecessors, (14368), 0 states have call successors, (0), 0 states 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 11:35:21,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:21,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-20 11:35:21,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:35:26,765 INFO L130 PetriNetUnfolder]: 8/2735 cut-off events. [2022-11-20 11:35:26,766 INFO L131 PetriNetUnfolder]: For 4813/4813 co-relation queries the response was YES. [2022-11-20 11:35:26,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4575 conditions, 2735 events. 8/2735 cut-off events. For 4813/4813 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 736 event pairs, 0 based on Foata normal form. 30/2750 useless extension candidates. Maximal degree in co-relation 2465. Up to 98 conditions per place. [2022-11-20 11:35:26,774 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 244 selfloop transitions, 91 changer transitions 0/564 dead transitions. [2022-11-20 11:35:26,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 564 transitions, 3144 flow [2022-11-20 11:35:26,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-20 11:35:26,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-20 11:35:26,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 21139 transitions. [2022-11-20 11:35:26,812 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9068640068640068 [2022-11-20 11:35:26,812 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 21139 transitions. [2022-11-20 11:35:26,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 21139 transitions. [2022-11-20 11:35:26,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:35:26,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 21139 transitions. [2022-11-20 11:35:26,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 234.87777777777777) internal successors, (21139), 90 states have internal predecessors, (21139), 0 states have call successors, (0), 0 states 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 11:35:26,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 259.0) internal successors, (23569), 91 states have internal predecessors, (23569), 0 states have call successors, (0), 0 states 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 11:35:26,922 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 259.0) internal successors, (23569), 91 states have internal predecessors, (23569), 0 states have call successors, (0), 0 states 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 11:35:26,922 INFO L175 Difference]: Start difference. First operand has 335 places, 292 transitions, 1032 flow. Second operand 90 states and 21139 transitions. [2022-11-20 11:35:26,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 564 transitions, 3144 flow [2022-11-20 11:35:26,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 564 transitions, 3057 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-11-20 11:35:26,953 INFO L231 Difference]: Finished difference. Result has 422 places, 338 transitions, 1664 flow [2022-11-20 11:35:26,954 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1664, PETRI_PLACES=422, PETRI_TRANSITIONS=338} [2022-11-20 11:35:26,954 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 175 predicate places. [2022-11-20 11:35:26,955 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 338 transitions, 1664 flow [2022-11-20 11:35:26,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 235.54098360655738) internal successors, (14368), 61 states have internal predecessors, (14368), 0 states have call successors, (0), 0 states 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 11:35:26,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:35:26,960 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] [2022-11-20 11:35:26,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:27,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 11:35:27,173 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 11:35:27,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:27,174 INFO L85 PathProgramCache]: Analyzing trace with hash -262578959, now seen corresponding path program 3 times [2022-11-20 11:35:27,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:27,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723409412] [2022-11-20 11:35:27,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:27,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:27,465 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:35:27,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504756990] [2022-11-20 11:35:27,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:35:27,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:27,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:27,468 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:27,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:35:28,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 11:35:28,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:35:28,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:35:28,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 1301 proven. 2 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-20 11:35:28,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:35:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 1301 proven. 2 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-20 11:35:29,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:29,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723409412] [2022-11-20 11:35:29,236 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:35:29,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504756990] [2022-11-20 11:35:29,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504756990] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:35:29,237 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:35:29,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-20 11:35:29,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185935479] [2022-11-20 11:35:29,238 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:35:29,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:35:29,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:29,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:35:29,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:35:29,245 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 259 [2022-11-20 11:35:29,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 338 transitions, 1664 flow. Second operand has 10 states, 10 states have (on average 228.1) internal successors, (2281), 10 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states 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 11:35:29,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:29,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 259 [2022-11-20 11:35:29,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:35:31,375 INFO L130 PetriNetUnfolder]: 8/2706 cut-off events. [2022-11-20 11:35:31,375 INFO L131 PetriNetUnfolder]: For 3181/3181 co-relation queries the response was YES. [2022-11-20 11:35:31,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4739 conditions, 2706 events. 8/2706 cut-off events. For 3181/3181 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 648 event pairs, 0 based on Foata normal form. 29/2720 useless extension candidates. Maximal degree in co-relation 2481. Up to 310 conditions per place. [2022-11-20 11:35:31,386 INFO L137 encePairwiseOnDemand]: 250/259 looper letters, 39 selfloop transitions, 103 changer transitions 0/361 dead transitions. [2022-11-20 11:35:31,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 361 transitions, 2004 flow [2022-11-20 11:35:31,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:35:31,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:35:31,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2954 transitions. [2022-11-20 11:35:31,394 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8773388773388774 [2022-11-20 11:35:31,394 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2954 transitions. [2022-11-20 11:35:31,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2954 transitions. [2022-11-20 11:35:31,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:35:31,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2954 transitions. [2022-11-20 11:35:31,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 227.23076923076923) internal successors, (2954), 13 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states 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 11:35:31,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 259.0) internal successors, (3626), 14 states have internal predecessors, (3626), 0 states have call successors, (0), 0 states 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 11:35:31,413 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 259.0) internal successors, (3626), 14 states have internal predecessors, (3626), 0 states have call successors, (0), 0 states 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 11:35:31,413 INFO L175 Difference]: Start difference. First operand has 422 places, 338 transitions, 1664 flow. Second operand 13 states and 2954 transitions. [2022-11-20 11:35:31,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 361 transitions, 2004 flow [2022-11-20 11:35:31,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 361 transitions, 1883 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-20 11:35:31,456 INFO L231 Difference]: Finished difference. Result has 393 places, 340 transitions, 1800 flow [2022-11-20 11:35:31,457 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1800, PETRI_PLACES=393, PETRI_TRANSITIONS=340} [2022-11-20 11:35:31,458 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 146 predicate places. [2022-11-20 11:35:31,459 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 340 transitions, 1800 flow [2022-11-20 11:35:31,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 228.1) internal successors, (2281), 10 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states 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 11:35:31,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:35:31,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:31,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:31,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:35:31,669 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 11:35:31,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:31,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1034934093, now seen corresponding path program 1 times [2022-11-20 11:35:31,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:31,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135622758] [2022-11-20 11:35:31,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:31,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:31,995 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:35:31,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852539809] [2022-11-20 11:35:31,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:31,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:32,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:32,001 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:32,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:35:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:34,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 5239 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:35:34,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:36,590 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 11:35:36,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:35:38,977 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 11:35:38,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:38,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135622758] [2022-11-20 11:35:38,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:35:38,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852539809] [2022-11-20 11:35:38,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852539809] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:35:38,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:35:38,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 11:35:38,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140716152] [2022-11-20 11:35:38,980 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:35:38,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:35:38,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:38,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:35:38,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:35:38,985 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 259 [2022-11-20 11:35:38,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 340 transitions, 1800 flow. Second operand has 8 states, 8 states have (on average 231.75) internal successors, (1854), 8 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 11:35:38,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:38,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 259 [2022-11-20 11:35:38,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:35:42,460 INFO L130 PetriNetUnfolder]: 9/3983 cut-off events. [2022-11-20 11:35:42,461 INFO L131 PetriNetUnfolder]: For 5415/5415 co-relation queries the response was YES. [2022-11-20 11:35:42,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6803 conditions, 3983 events. 9/3983 cut-off events. For 5415/5415 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 406 event pairs, 0 based on Foata normal form. 3/3971 useless extension candidates. Maximal degree in co-relation 4626. Up to 158 conditions per place. [2022-11-20 11:35:42,473 INFO L137 encePairwiseOnDemand]: 252/259 looper letters, 36 selfloop transitions, 9 changer transitions 0/362 dead transitions. [2022-11-20 11:35:42,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 362 transitions, 1954 flow [2022-11-20 11:35:42,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:35:42,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:35:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2100 transitions. [2022-11-20 11:35:42,477 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9009009009009009 [2022-11-20 11:35:42,477 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2100 transitions. [2022-11-20 11:35:42,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2100 transitions. [2022-11-20 11:35:42,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:35:42,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2100 transitions. [2022-11-20 11:35:42,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 233.33333333333334) internal successors, (2100), 9 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states 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 11:35:42,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states 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 11:35:42,486 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states 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 11:35:42,486 INFO L175 Difference]: Start difference. First operand has 393 places, 340 transitions, 1800 flow. Second operand 9 states and 2100 transitions. [2022-11-20 11:35:42,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 362 transitions, 1954 flow [2022-11-20 11:35:42,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 362 transitions, 1883 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 11:35:42,529 INFO L231 Difference]: Finished difference. Result has 400 places, 344 transitions, 1792 flow [2022-11-20 11:35:42,530 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1792, PETRI_PLACES=400, PETRI_TRANSITIONS=344} [2022-11-20 11:35:42,531 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 153 predicate places. [2022-11-20 11:35:42,531 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 344 transitions, 1792 flow [2022-11-20 11:35:42,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 231.75) internal successors, (1854), 8 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 11:35:42,532 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:35:42,533 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 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, 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] [2022-11-20 11:35:42,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:42,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:42,752 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 11:35:42,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:42,753 INFO L85 PathProgramCache]: Analyzing trace with hash 449987226, now seen corresponding path program 1 times [2022-11-20 11:35:42,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:42,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175585860] [2022-11-20 11:35:42,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:42,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:42,980 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:35:42,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [71366853] [2022-11-20 11:35:42,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:42,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:42,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:42,991 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:43,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 11:35:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:53,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 5332 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:35:53,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:56,601 INFO L134 CoverageAnalysis]: Checked inductivity of 19200 backedges. 1335 proven. 0 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-20 11:35:56,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:35:56,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:56,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175585860] [2022-11-20 11:35:56,602 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:35:56,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71366853] [2022-11-20 11:35:56,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71366853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:56,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:35:56,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:35:56,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576156149] [2022-11-20 11:35:56,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:56,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:35:56,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:56,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:35:56,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:35:56,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 259 [2022-11-20 11:35:56,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 344 transitions, 1792 flow. Second operand has 9 states, 9 states have (on average 222.33333333333334) internal successors, (2001), 9 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states 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 11:35:56,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:56,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 259 [2022-11-20 11:35:56,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:36:00,565 INFO L130 PetriNetUnfolder]: 9/3925 cut-off events. [2022-11-20 11:36:00,566 INFO L131 PetriNetUnfolder]: For 5807/5807 co-relation queries the response was YES. [2022-11-20 11:36:00,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7045 conditions, 3925 events. 9/3925 cut-off events. For 5807/5807 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 291 event pairs, 0 based on Foata normal form. 58/3968 useless extension candidates. Maximal degree in co-relation 4709. Up to 354 conditions per place. [2022-11-20 11:36:00,582 INFO L137 encePairwiseOnDemand]: 249/259 looper letters, 169 selfloop transitions, 74 changer transitions 0/457 dead transitions. [2022-11-20 11:36:00,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 457 transitions, 3476 flow [2022-11-20 11:36:00,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:36:00,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 11:36:00,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2671 transitions. [2022-11-20 11:36:00,588 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8593951093951094 [2022-11-20 11:36:00,588 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2671 transitions. [2022-11-20 11:36:00,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2671 transitions. [2022-11-20 11:36:00,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:36:00,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2671 transitions. [2022-11-20 11:36:00,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 222.58333333333334) internal successors, (2671), 12 states have internal predecessors, (2671), 0 states have call successors, (0), 0 states 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 11:36:00,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 259.0) internal successors, (3367), 13 states have internal predecessors, (3367), 0 states have call successors, (0), 0 states 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 11:36:00,600 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 259.0) internal successors, (3367), 13 states have internal predecessors, (3367), 0 states have call successors, (0), 0 states 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 11:36:00,600 INFO L175 Difference]: Start difference. First operand has 400 places, 344 transitions, 1792 flow. Second operand 12 states and 2671 transitions. [2022-11-20 11:36:00,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 457 transitions, 3476 flow [2022-11-20 11:36:00,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 457 transitions, 3462 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-20 11:36:00,647 INFO L231 Difference]: Finished difference. Result has 410 places, 403 transitions, 2755 flow [2022-11-20 11:36:00,648 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2755, PETRI_PLACES=410, PETRI_TRANSITIONS=403} [2022-11-20 11:36:00,649 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 163 predicate places. [2022-11-20 11:36:00,649 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 403 transitions, 2755 flow [2022-11-20 11:36:00,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 222.33333333333334) internal successors, (2001), 9 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states 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 11:36:00,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:36:00,652 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:36:00,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:36:00,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:36:00,867 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 11:36:00,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:00,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1664200277, now seen corresponding path program 1 times [2022-11-20 11:36:00,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:00,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917950787] [2022-11-20 11:36:00,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:00,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:01,458 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:36:01,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [201344533] [2022-11-20 11:36:01,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:01,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:36:01,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:36:01,474 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:36:01,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 11:36:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:06,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 15236 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:36:06,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:36:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 164517 backedges. 0 proven. 110922 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-20 11:36:13,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:36:22,964 INFO L134 CoverageAnalysis]: Checked inductivity of 164517 backedges. 0 proven. 110922 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-20 11:36:22,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:22,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917950787] [2022-11-20 11:36:22,965 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:36:22,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201344533] [2022-11-20 11:36:22,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201344533] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:36:22,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:36:22,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 11:36:22,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58018749] [2022-11-20 11:36:22,969 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:36:22,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:36:22,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:22,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:36:22,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:36:22,979 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 259 [2022-11-20 11:36:22,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 403 transitions, 2755 flow. Second operand has 14 states, 14 states have (on average 232.92857142857142) internal successors, (3261), 14 states have internal predecessors, (3261), 0 states have call successors, (0), 0 states 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 11:36:22,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:36:22,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 259 [2022-11-20 11:36:22,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:36:30,328 INFO L130 PetriNetUnfolder]: 15/5334 cut-off events. [2022-11-20 11:36:30,328 INFO L131 PetriNetUnfolder]: For 8853/8853 co-relation queries the response was YES. [2022-11-20 11:36:30,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9187 conditions, 5334 events. 15/5334 cut-off events. For 8853/8853 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 872 event pairs, 0 based on Foata normal form. 2/5306 useless extension candidates. Maximal degree in co-relation 6974. Up to 192 conditions per place. [2022-11-20 11:36:30,350 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 43 selfloop transitions, 14 changer transitions 0/434 dead transitions. [2022-11-20 11:36:30,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 434 transitions, 2976 flow [2022-11-20 11:36:30,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:36:30,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 11:36:30,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3479 transitions. [2022-11-20 11:36:30,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8954954954954955 [2022-11-20 11:36:30,355 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3479 transitions. [2022-11-20 11:36:30,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3479 transitions. [2022-11-20 11:36:30,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:36:30,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3479 transitions. [2022-11-20 11:36:30,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 231.93333333333334) internal successors, (3479), 15 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states 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 11:36:30,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 259.0) internal successors, (4144), 16 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states 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 11:36:30,368 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 259.0) internal successors, (4144), 16 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states 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 11:36:30,368 INFO L175 Difference]: Start difference. First operand has 410 places, 403 transitions, 2755 flow. Second operand 15 states and 3479 transitions. [2022-11-20 11:36:30,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 434 transitions, 2976 flow [2022-11-20 11:36:30,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 434 transitions, 2937 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-11-20 11:36:30,429 INFO L231 Difference]: Finished difference. Result has 414 places, 406 transitions, 2784 flow [2022-11-20 11:36:30,430 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=2719, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2784, PETRI_PLACES=414, PETRI_TRANSITIONS=406} [2022-11-20 11:36:30,431 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 167 predicate places. [2022-11-20 11:36:30,431 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 406 transitions, 2784 flow [2022-11-20 11:36:30,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 232.92857142857142) internal successors, (3261), 14 states have internal predecessors, (3261), 0 states have call successors, (0), 0 states 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 11:36:30,432 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:36:30,433 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:36:30,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:36:30,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 11:36:30,647 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 11:36:30,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:30,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2122701357, now seen corresponding path program 2 times [2022-11-20 11:36:30,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:30,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880590923] [2022-11-20 11:36:30,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:30,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:31,375 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:36:31,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492845696] [2022-11-20 11:36:31,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:36:31,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:36:31,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:36:31,400 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:36:31,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 11:36:36,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:36:36,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:36:36,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 15359 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:36:37,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:36:44,920 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 11:36:44,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:36:52,724 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 11:36:52,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:52,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880590923] [2022-11-20 11:36:52,725 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:36:52,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492845696] [2022-11-20 11:36:52,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492845696] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:36:52,725 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:36:52,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 11:36:52,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435182827] [2022-11-20 11:36:52,729 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:36:52,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:36:52,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:52,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:36:52,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:36:52,737 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 259 [2022-11-20 11:36:52,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 406 transitions, 2784 flow. Second operand has 16 states, 16 states have (on average 232.875) internal successors, (3726), 16 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states 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 11:36:52,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:36:52,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 259 [2022-11-20 11:36:52,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:37:08,717 INFO L130 PetriNetUnfolder]: 13/8912 cut-off events. [2022-11-20 11:37:08,717 INFO L131 PetriNetUnfolder]: For 15656/15656 co-relation queries the response was YES. [2022-11-20 11:37:08,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15623 conditions, 8912 events. 13/8912 cut-off events. For 15656/15656 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 294 event pairs, 0 based on Foata normal form. 4/8901 useless extension candidates. Maximal degree in co-relation 13243. Up to 336 conditions per place. [2022-11-20 11:37:08,740 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 69 selfloop transitions, 21 changer transitions 0/467 dead transitions. [2022-11-20 11:37:08,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 467 transitions, 3196 flow [2022-11-20 11:37:08,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:37:08,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:37:08,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4882 transitions. [2022-11-20 11:37:08,748 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8975914690200405 [2022-11-20 11:37:08,748 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4882 transitions. [2022-11-20 11:37:08,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4882 transitions. [2022-11-20 11:37:08,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:37:08,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4882 transitions. [2022-11-20 11:37:08,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 232.47619047619048) internal successors, (4882), 21 states have internal predecessors, (4882), 0 states have call successors, (0), 0 states 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 11:37:08,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 259.0) internal successors, (5698), 22 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states 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 11:37:08,766 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 259.0) internal successors, (5698), 22 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states 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 11:37:08,766 INFO L175 Difference]: Start difference. First operand has 414 places, 406 transitions, 2784 flow. Second operand 21 states and 4882 transitions. [2022-11-20 11:37:08,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 467 transitions, 3196 flow [2022-11-20 11:37:08,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 467 transitions, 3112 flow, removed 15 selfloop flow, removed 12 redundant places. [2022-11-20 11:37:08,842 INFO L231 Difference]: Finished difference. Result has 427 places, 416 transitions, 2875 flow [2022-11-20 11:37:08,843 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2875, PETRI_PLACES=427, PETRI_TRANSITIONS=416} [2022-11-20 11:37:08,844 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 180 predicate places. [2022-11-20 11:37:08,844 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 416 transitions, 2875 flow [2022-11-20 11:37:08,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 232.875) internal successors, (3726), 16 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states 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 11:37:08,845 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:37:08,848 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:08,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:09,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:37:09,068 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 11:37:09,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:09,069 INFO L85 PathProgramCache]: Analyzing trace with hash -984338451, now seen corresponding path program 3 times [2022-11-20 11:37:09,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:09,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463298278] [2022-11-20 11:37:09,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:09,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:10,565 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:37:10,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1432438859] [2022-11-20 11:37:10,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:37:10,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:10,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:37:10,575 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:37:10,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9770ace-06e4-4a3c-b404-9ea3c708ec91/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process