./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8 --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 a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 --- 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-e04fb08 [2022-11-16 11:57:24,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:57:24,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:57:24,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:57:24,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:57:24,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:57:24,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:57:24,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:57:24,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:57:24,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:57:24,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:57:24,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:57:24,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:57:24,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:57:24,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:57:24,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:57:24,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:57:24,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:57:24,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:57:24,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:57:24,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:57:24,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:57:24,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:57:24,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:57:24,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:57:24,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:57:24,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:57:24,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:57:24,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:57:24,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:57:24,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:57:24,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:57:24,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:57:24,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:57:24,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:57:24,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:57:24,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:57:24,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:57:24,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:57:24,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:57:24,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:57:24,890 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:57:24,942 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:57:24,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:57:24,945 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:57:24,945 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:57:24,946 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:57:24,947 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:57:24,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:57:24,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:57:24,948 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:57:24,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:57:24,950 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:57:24,950 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:57:24,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:57:24,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:57:24,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:57:24,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:57:24,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:57:24,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:57:24,952 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:57:24,952 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:57:24,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:57:24,952 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:57:24,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:57:24,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:57:24,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:57:24,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:57:24,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:57:24,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:57:24,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:57:24,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:57:24,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:57:24,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:57:24,956 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:57:24,956 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:57:24,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:57:24,956 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_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 [2022-11-16 11:57:25,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:57:25,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:57:25,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:57:25,354 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:57:25,355 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:57:25,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i [2022-11-16 11:57:25,431 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/data/671e1ac06/c71838a514484f348bb2baf16615bad9/FLAGe7d01082a [2022-11-16 11:57:26,121 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:57:26,121 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i [2022-11-16 11:57:26,140 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/data/671e1ac06/c71838a514484f348bb2baf16615bad9/FLAGe7d01082a [2022-11-16 11:57:26,159 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/data/671e1ac06/c71838a514484f348bb2baf16615bad9 [2022-11-16 11:57:26,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:57:26,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:57:26,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:57:26,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:57:26,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:57:26,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:57:26" (1/1) ... [2022-11-16 11:57:26,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1208d61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:26, skipping insertion in model container [2022-11-16 11:57:26,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:57:26" (1/1) ... [2022-11-16 11:57:26,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:57:26,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:57:26,788 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i[30212,30225] [2022-11-16 11:57:26,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:57:26,846 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:57:26,899 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i[30212,30225] [2022-11-16 11:57:26,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:57:26,971 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:57:26,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:26 WrapperNode [2022-11-16 11:57:26,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:57:26,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:57:26,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:57:26,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:57:26,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:26" (1/1) ... [2022-11-16 11:57:27,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:26" (1/1) ... [2022-11-16 11:57:27,057 INFO L138 Inliner]: procedures = 173, calls = 39, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 143 [2022-11-16 11:57:27,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:57:27,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:57:27,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:57:27,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:57:27,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:26" (1/1) ... [2022-11-16 11:57:27,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:26" (1/1) ... [2022-11-16 11:57:27,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:26" (1/1) ... [2022-11-16 11:57:27,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:26" (1/1) ... [2022-11-16 11:57:27,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:26" (1/1) ... [2022-11-16 11:57:27,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:26" (1/1) ... [2022-11-16 11:57:27,128 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:26" (1/1) ... [2022-11-16 11:57:27,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:26" (1/1) ... [2022-11-16 11:57:27,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:57:27,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:57:27,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:57:27,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:57:27,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:26" (1/1) ... [2022-11-16 11:57:27,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:57:27,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:27,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:57:27,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:57:27,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:57:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:57:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:57:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:57:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:57:27,239 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 11:57:27,239 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 11:57:27,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:57:27,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:57:27,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:57:27,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:57:27,243 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:57:27,409 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:57:27,411 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:57:27,745 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:57:27,754 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:57:27,762 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-16 11:57:27,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:57:27 BoogieIcfgContainer [2022-11-16 11:57:27,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:57:27,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:57:27,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:57:27,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:57:27,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:57:26" (1/3) ... [2022-11-16 11:57:27,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17689cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:57:27, skipping insertion in model container [2022-11-16 11:57:27,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:26" (2/3) ... [2022-11-16 11:57:27,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17689cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:57:27, skipping insertion in model container [2022-11-16 11:57:27,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:57:27" (3/3) ... [2022-11-16 11:57:27,778 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_19-callback_racing.i [2022-11-16 11:57:27,788 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:57:27,800 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:57:27,800 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-16 11:57:27,800 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:57:27,925 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 11:57:27,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 165 transitions, 338 flow [2022-11-16 11:57:28,083 INFO L130 PetriNetUnfolder]: 26/253 cut-off events. [2022-11-16 11:57:28,083 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:57:28,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 253 events. 26/253 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 737 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 124. Up to 6 conditions per place. [2022-11-16 11:57:28,091 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 165 transitions, 338 flow [2022-11-16 11:57:28,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 162 transitions, 332 flow [2022-11-16 11:57:28,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:57:28,114 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;@75fb332e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:57:28,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-16 11:57:28,137 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-11-16 11:57:28,137 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:57:28,137 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:28,138 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:28,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:28,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:28,147 INFO L85 PathProgramCache]: Analyzing trace with hash 531203695, now seen corresponding path program 1 times [2022-11-16 11:57:28,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:28,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250733484] [2022-11-16 11:57:28,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:28,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:28,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:28,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250733484] [2022-11-16 11:57:28,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250733484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:28,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:28,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:28,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121471018] [2022-11-16 11:57:28,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:28,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:28,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:28,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:28,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:28,658 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 165 [2022-11-16 11:57:28,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 162 transitions, 332 flow. Second operand has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:28,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:28,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 165 [2022-11-16 11:57:28,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:28,749 INFO L130 PetriNetUnfolder]: 2/151 cut-off events. [2022-11-16 11:57:28,750 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:57:28,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 151 events. 2/151 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 181 event pairs, 0 based on Foata normal form. 26/165 useless extension candidates. Maximal degree in co-relation 111. Up to 7 conditions per place. [2022-11-16 11:57:28,754 INFO L137 encePairwiseOnDemand]: 146/165 looper letters, 10 selfloop transitions, 4 changer transitions 7/149 dead transitions. [2022-11-16 11:57:28,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 149 transitions, 334 flow [2022-11-16 11:57:28,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:28,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:28,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 729 transitions. [2022-11-16 11:57:28,782 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8836363636363637 [2022-11-16 11:57:28,783 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 729 transitions. [2022-11-16 11:57:28,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 729 transitions. [2022-11-16 11:57:28,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:28,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 729 transitions. [2022-11-16 11:57:28,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:28,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:28,807 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:28,809 INFO L175 Difference]: Start difference. First operand has 151 places, 162 transitions, 332 flow. Second operand 5 states and 729 transitions. [2022-11-16 11:57:28,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 149 transitions, 334 flow [2022-11-16 11:57:28,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 149 transitions, 334 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:57:28,819 INFO L231 Difference]: Finished difference. Result has 153 places, 140 transitions, 300 flow [2022-11-16 11:57:28,822 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=153, PETRI_TRANSITIONS=140} [2022-11-16 11:57:28,826 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 2 predicate places. [2022-11-16 11:57:28,826 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 140 transitions, 300 flow [2022-11-16 11:57:28,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:28,827 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:28,828 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:28,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:57:28,828 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:28,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:28,829 INFO L85 PathProgramCache]: Analyzing trace with hash -410543223, now seen corresponding path program 1 times [2022-11-16 11:57:28,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:28,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075717653] [2022-11-16 11:57:28,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:28,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:28,879 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:57:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:28,954 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:57:28,956 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:57:28,958 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-16 11:57:28,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-11-16 11:57:28,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-11-16 11:57:28,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-11-16 11:57:28,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-11-16 11:57:28,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-11-16 11:57:28,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-11-16 11:57:28,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-11-16 11:57:28,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-11-16 11:57:28,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-11-16 11:57:28,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-11-16 11:57:28,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:57:28,964 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 11:57:28,969 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:57:28,969 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 11:57:28,997 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:57:29,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 188 transitions, 394 flow [2022-11-16 11:57:29,121 INFO L130 PetriNetUnfolder]: 43/401 cut-off events. [2022-11-16 11:57:29,122 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 11:57:29,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 401 events. 43/401 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1519 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 255. Up to 9 conditions per place. [2022-11-16 11:57:29,130 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 188 transitions, 394 flow [2022-11-16 11:57:29,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 188 transitions, 394 flow [2022-11-16 11:57:29,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:57:29,150 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;@75fb332e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:57:29,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-16 11:57:29,164 INFO L130 PetriNetUnfolder]: 3/65 cut-off events. [2022-11-16 11:57:29,164 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:57:29,165 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:29,165 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:29,165 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:29,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:29,169 INFO L85 PathProgramCache]: Analyzing trace with hash -565760064, now seen corresponding path program 1 times [2022-11-16 11:57:29,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:29,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434871168] [2022-11-16 11:57:29,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:29,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:29,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:29,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:29,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434871168] [2022-11-16 11:57:29,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434871168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:29,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:29,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:29,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504546439] [2022-11-16 11:57:29,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:29,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:29,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:29,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:29,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:29,290 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 188 [2022-11-16 11:57:29,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 188 transitions, 394 flow. Second operand has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:29,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:29,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 188 [2022-11-16 11:57:29,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:29,418 INFO L130 PetriNetUnfolder]: 6/297 cut-off events. [2022-11-16 11:57:29,419 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-11-16 11:57:29,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 297 events. 6/297 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 905 event pairs, 0 based on Foata normal form. 87/352 useless extension candidates. Maximal degree in co-relation 228. Up to 21 conditions per place. [2022-11-16 11:57:29,422 INFO L137 encePairwiseOnDemand]: 166/188 looper letters, 19 selfloop transitions, 4 changer transitions 7/178 dead transitions. [2022-11-16 11:57:29,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 178 transitions, 420 flow [2022-11-16 11:57:29,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:29,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:29,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 826 transitions. [2022-11-16 11:57:29,428 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8787234042553191 [2022-11-16 11:57:29,428 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 826 transitions. [2022-11-16 11:57:29,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 826 transitions. [2022-11-16 11:57:29,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:29,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 826 transitions. [2022-11-16 11:57:29,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:29,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:29,436 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:29,436 INFO L175 Difference]: Start difference. First operand has 174 places, 188 transitions, 394 flow. Second operand 5 states and 826 transitions. [2022-11-16 11:57:29,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 178 transitions, 420 flow [2022-11-16 11:57:29,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 178 transitions, 420 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:57:29,445 INFO L231 Difference]: Finished difference. Result has 179 places, 167 transitions, 378 flow [2022-11-16 11:57:29,446 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=378, PETRI_PLACES=179, PETRI_TRANSITIONS=167} [2022-11-16 11:57:29,448 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 5 predicate places. [2022-11-16 11:57:29,448 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 167 transitions, 378 flow [2022-11-16 11:57:29,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:29,449 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:29,450 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:29,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:57:29,451 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:29,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:29,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1007027112, now seen corresponding path program 1 times [2022-11-16 11:57:29,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:29,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337519515] [2022-11-16 11:57:29,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:29,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:29,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:57:29,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:29,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337519515] [2022-11-16 11:57:29,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337519515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:29,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:29,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:29,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796015748] [2022-11-16 11:57:29,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:29,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:29,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:29,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:29,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:29,655 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 188 [2022-11-16 11:57:29,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 167 transitions, 378 flow. Second operand has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:29,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:29,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 188 [2022-11-16 11:57:29,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:29,755 INFO L130 PetriNetUnfolder]: 6/268 cut-off events. [2022-11-16 11:57:29,755 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-16 11:57:29,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 268 events. 6/268 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 748 event pairs, 0 based on Foata normal form. 1/245 useless extension candidates. Maximal degree in co-relation 252. Up to 10 conditions per place. [2022-11-16 11:57:29,758 INFO L137 encePairwiseOnDemand]: 182/188 looper letters, 11 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2022-11-16 11:57:29,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 167 transitions, 414 flow [2022-11-16 11:57:29,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:29,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 792 transitions. [2022-11-16 11:57:29,761 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8425531914893617 [2022-11-16 11:57:29,761 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 792 transitions. [2022-11-16 11:57:29,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 792 transitions. [2022-11-16 11:57:29,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:29,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 792 transitions. [2022-11-16 11:57:29,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:29,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:29,768 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:29,769 INFO L175 Difference]: Start difference. First operand has 179 places, 167 transitions, 378 flow. Second operand 5 states and 792 transitions. [2022-11-16 11:57:29,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 167 transitions, 414 flow [2022-11-16 11:57:29,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 167 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:57:29,774 INFO L231 Difference]: Finished difference. Result has 175 places, 167 transitions, 396 flow [2022-11-16 11:57:29,774 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=396, PETRI_PLACES=175, PETRI_TRANSITIONS=167} [2022-11-16 11:57:29,775 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 1 predicate places. [2022-11-16 11:57:29,776 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 167 transitions, 396 flow [2022-11-16 11:57:29,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:29,776 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:29,777 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:29,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:57:29,777 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:29,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:29,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1153068889, now seen corresponding path program 1 times [2022-11-16 11:57:29,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:29,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473354812] [2022-11-16 11:57:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:29,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:29,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:29,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:29,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473354812] [2022-11-16 11:57:29,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473354812] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:29,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274954346] [2022-11-16 11:57:29,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:29,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:29,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:29,923 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:29,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:57:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:30,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:57:30,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:30,214 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:30,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:57:30,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274954346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:30,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:57:30,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 11:57:30,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740231157] [2022-11-16 11:57:30,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:30,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:57:30,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:30,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:57:30,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:57:30,220 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 188 [2022-11-16 11:57:30,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 167 transitions, 396 flow. Second operand has 5 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:30,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:30,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 188 [2022-11-16 11:57:30,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:30,327 INFO L130 PetriNetUnfolder]: 6/267 cut-off events. [2022-11-16 11:57:30,327 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-11-16 11:57:30,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 267 events. 6/267 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 743 event pairs, 0 based on Foata normal form. 1/244 useless extension candidates. Maximal degree in co-relation 230. Up to 17 conditions per place. [2022-11-16 11:57:30,329 INFO L137 encePairwiseOnDemand]: 184/188 looper letters, 13 selfloop transitions, 5 changer transitions 0/166 dead transitions. [2022-11-16 11:57:30,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 166 transitions, 428 flow [2022-11-16 11:57:30,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:57:30,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:57:30,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 635 transitions. [2022-11-16 11:57:30,332 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8444148936170213 [2022-11-16 11:57:30,333 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 635 transitions. [2022-11-16 11:57:30,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 635 transitions. [2022-11-16 11:57:30,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:30,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 635 transitions. [2022-11-16 11:57:30,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:30,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:30,339 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:30,339 INFO L175 Difference]: Start difference. First operand has 175 places, 167 transitions, 396 flow. Second operand 4 states and 635 transitions. [2022-11-16 11:57:30,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 166 transitions, 428 flow [2022-11-16 11:57:30,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 166 transitions, 416 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:57:30,345 INFO L231 Difference]: Finished difference. Result has 174 places, 166 transitions, 390 flow [2022-11-16 11:57:30,346 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=174, PETRI_TRANSITIONS=166} [2022-11-16 11:57:30,347 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, 0 predicate places. [2022-11-16 11:57:30,347 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 166 transitions, 390 flow [2022-11-16 11:57:30,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:30,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:30,348 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] [2022-11-16 11:57:30,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:30,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:30,556 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:30,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:30,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1654269603, now seen corresponding path program 1 times [2022-11-16 11:57:30,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:30,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722191452] [2022-11-16 11:57:30,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:30,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:30,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:30,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:30,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722191452] [2022-11-16 11:57:30,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722191452] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:30,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338362379] [2022-11-16 11:57:30,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:30,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:30,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:30,715 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:30,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:57:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:30,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:57:30,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:30,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:30,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:30,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:30,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338362379] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:30,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:57:30,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:57:30,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708901663] [2022-11-16 11:57:31,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:31,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:57:31,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:31,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:57:31,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:57:31,006 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 188 [2022-11-16 11:57:31,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 166 transitions, 390 flow. Second operand has 10 states, 10 states have (on average 157.9) internal successors, (1579), 10 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:31,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:31,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 188 [2022-11-16 11:57:31,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:31,119 INFO L130 PetriNetUnfolder]: 0/99 cut-off events. [2022-11-16 11:57:31,119 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-16 11:57:31,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 99 events. 0/99 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 2/99 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2022-11-16 11:57:31,120 INFO L137 encePairwiseOnDemand]: 183/188 looper letters, 13 selfloop transitions, 7 changer transitions 0/93 dead transitions. [2022-11-16 11:57:31,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 93 transitions, 278 flow [2022-11-16 11:57:31,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:57:31,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:57:31,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1417 transitions. [2022-11-16 11:57:31,125 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8374704491725768 [2022-11-16 11:57:31,125 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1417 transitions. [2022-11-16 11:57:31,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1417 transitions. [2022-11-16 11:57:31,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:31,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1417 transitions. [2022-11-16 11:57:31,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 157.44444444444446) internal successors, (1417), 9 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:31,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 188.0) internal successors, (1880), 10 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:31,134 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 188.0) internal successors, (1880), 10 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:31,134 INFO L175 Difference]: Start difference. First operand has 174 places, 166 transitions, 390 flow. Second operand 9 states and 1417 transitions. [2022-11-16 11:57:31,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 93 transitions, 278 flow [2022-11-16 11:57:31,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 93 transitions, 266 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-16 11:57:31,138 INFO L231 Difference]: Finished difference. Result has 105 places, 88 transitions, 228 flow [2022-11-16 11:57:31,139 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=228, PETRI_PLACES=105, PETRI_TRANSITIONS=88} [2022-11-16 11:57:31,143 INFO L288 CegarLoopForPetriNet]: 174 programPoint places, -69 predicate places. [2022-11-16 11:57:31,143 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 88 transitions, 228 flow [2022-11-16 11:57:31,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 157.9) internal successors, (1579), 10 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:31,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:31,147 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:31,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:31,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:31,354 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:31,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:31,355 INFO L85 PathProgramCache]: Analyzing trace with hash -489867641, now seen corresponding path program 1 times [2022-11-16 11:57:31,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:31,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344048975] [2022-11-16 11:57:31,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:31,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:31,401 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:57:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:31,434 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:57:31,434 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:57:31,435 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-16 11:57:31,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-11-16 11:57:31,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-11-16 11:57:31,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-11-16 11:57:31,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-11-16 11:57:31,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-11-16 11:57:31,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-11-16 11:57:31,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-11-16 11:57:31,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-11-16 11:57:31,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-11-16 11:57:31,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-11-16 11:57:31,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:57:31,445 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 11:57:31,446 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:57:31,447 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 11:57:31,483 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:57:31,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 211 transitions, 452 flow [2022-11-16 11:57:31,574 INFO L130 PetriNetUnfolder]: 65/590 cut-off events. [2022-11-16 11:57:31,574 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-16 11:57:31,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 590 events. 65/590 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2491 event pairs, 1 based on Foata normal form. 0/477 useless extension candidates. Maximal degree in co-relation 409. Up to 16 conditions per place. [2022-11-16 11:57:31,579 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 211 transitions, 452 flow [2022-11-16 11:57:31,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 211 transitions, 452 flow [2022-11-16 11:57:31,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:57:31,589 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;@75fb332e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:57:31,589 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-16 11:57:31,596 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-11-16 11:57:31,596 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:57:31,596 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:31,597 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:31,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:31,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:31,602 INFO L85 PathProgramCache]: Analyzing trace with hash -565638680, now seen corresponding path program 1 times [2022-11-16 11:57:31,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:31,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855404790] [2022-11-16 11:57:31,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:31,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:31,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:31,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:31,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855404790] [2022-11-16 11:57:31,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855404790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:31,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:31,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:31,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926419123] [2022-11-16 11:57:31,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:31,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:31,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:31,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:31,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:31,708 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 211 [2022-11-16 11:57:31,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 211 transitions, 452 flow. Second operand has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:31,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:31,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 211 [2022-11-16 11:57:31,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:31,865 INFO L130 PetriNetUnfolder]: 13/470 cut-off events. [2022-11-16 11:57:31,865 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-11-16 11:57:31,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 470 events. 13/470 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1900 event pairs, 1 based on Foata normal form. 197/611 useless extension candidates. Maximal degree in co-relation 384. Up to 40 conditions per place. [2022-11-16 11:57:31,868 INFO L137 encePairwiseOnDemand]: 186/211 looper letters, 21 selfloop transitions, 4 changer transitions 7/197 dead transitions. [2022-11-16 11:57:31,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 197 transitions, 474 flow [2022-11-16 11:57:31,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:31,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:31,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 916 transitions. [2022-11-16 11:57:31,872 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8682464454976303 [2022-11-16 11:57:31,872 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 916 transitions. [2022-11-16 11:57:31,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 916 transitions. [2022-11-16 11:57:31,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:31,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 916 transitions. [2022-11-16 11:57:31,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.2) internal successors, (916), 5 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:31,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:31,878 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:31,879 INFO L175 Difference]: Start difference. First operand has 195 places, 211 transitions, 452 flow. Second operand 5 states and 916 transitions. [2022-11-16 11:57:31,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 197 transitions, 474 flow [2022-11-16 11:57:31,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 197 transitions, 474 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:57:31,885 INFO L231 Difference]: Finished difference. Result has 199 places, 186 transitions, 428 flow [2022-11-16 11:57:31,886 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=428, PETRI_PLACES=199, PETRI_TRANSITIONS=186} [2022-11-16 11:57:31,888 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 4 predicate places. [2022-11-16 11:57:31,888 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 186 transitions, 428 flow [2022-11-16 11:57:31,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:31,889 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:31,889 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:31,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:57:31,890 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:31,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:31,890 INFO L85 PathProgramCache]: Analyzing trace with hash -320209323, now seen corresponding path program 1 times [2022-11-16 11:57:31,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:31,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978739971] [2022-11-16 11:57:31,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:31,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:31,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:57:31,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:31,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978739971] [2022-11-16 11:57:31,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978739971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:31,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:31,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:31,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205798126] [2022-11-16 11:57:31,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:31,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:31,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:31,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:31,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:31,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 211 [2022-11-16 11:57:31,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 186 transitions, 428 flow. Second operand has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:31,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:31,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 211 [2022-11-16 11:57:31,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:32,083 INFO L130 PetriNetUnfolder]: 13/412 cut-off events. [2022-11-16 11:57:32,083 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-11-16 11:57:32,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 412 events. 13/412 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1571 event pairs, 1 based on Foata normal form. 2/373 useless extension candidates. Maximal degree in co-relation 432. Up to 20 conditions per place. [2022-11-16 11:57:32,087 INFO L137 encePairwiseOnDemand]: 205/211 looper letters, 13 selfloop transitions, 8 changer transitions 0/186 dead transitions. [2022-11-16 11:57:32,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 186 transitions, 468 flow [2022-11-16 11:57:32,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:32,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:32,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 879 transitions. [2022-11-16 11:57:32,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.833175355450237 [2022-11-16 11:57:32,094 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 879 transitions. [2022-11-16 11:57:32,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 879 transitions. [2022-11-16 11:57:32,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:32,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 879 transitions. [2022-11-16 11:57:32,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 175.8) internal successors, (879), 5 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:32,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:32,103 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:32,103 INFO L175 Difference]: Start difference. First operand has 199 places, 186 transitions, 428 flow. Second operand 5 states and 879 transitions. [2022-11-16 11:57:32,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 186 transitions, 468 flow [2022-11-16 11:57:32,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 186 transitions, 466 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:57:32,109 INFO L231 Difference]: Finished difference. Result has 195 places, 186 transitions, 446 flow [2022-11-16 11:57:32,109 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=195, PETRI_TRANSITIONS=186} [2022-11-16 11:57:32,111 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 0 predicate places. [2022-11-16 11:57:32,111 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 186 transitions, 446 flow [2022-11-16 11:57:32,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:32,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:32,112 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:32,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:57:32,113 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:32,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:32,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1336553699, now seen corresponding path program 1 times [2022-11-16 11:57:32,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:32,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045138069] [2022-11-16 11:57:32,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:32,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,241 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:32,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:32,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045138069] [2022-11-16 11:57:32,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045138069] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:32,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464370221] [2022-11-16 11:57:32,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:32,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:32,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:32,243 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:32,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:57:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:57:32,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:32,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:57:32,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464370221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:32,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:57:32,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 11:57:32,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929093319] [2022-11-16 11:57:32,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:32,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:57:32,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:32,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:57:32,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:57:32,408 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 211 [2022-11-16 11:57:32,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 186 transitions, 446 flow. Second operand has 5 states, 5 states have (on average 175.2) internal successors, (876), 5 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:32,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:32,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 211 [2022-11-16 11:57:32,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:32,535 INFO L130 PetriNetUnfolder]: 13/410 cut-off events. [2022-11-16 11:57:32,535 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-11-16 11:57:32,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 410 events. 13/410 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1554 event pairs, 1 based on Foata normal form. 2/371 useless extension candidates. Maximal degree in co-relation 377. Up to 30 conditions per place. [2022-11-16 11:57:32,540 INFO L137 encePairwiseOnDemand]: 207/211 looper letters, 15 selfloop transitions, 5 changer transitions 0/185 dead transitions. [2022-11-16 11:57:32,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 185 transitions, 482 flow [2022-11-16 11:57:32,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:57:32,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:57:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 705 transitions. [2022-11-16 11:57:32,542 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8353080568720379 [2022-11-16 11:57:32,542 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 705 transitions. [2022-11-16 11:57:32,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 705 transitions. [2022-11-16 11:57:32,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:32,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 705 transitions. [2022-11-16 11:57:32,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 176.25) internal successors, (705), 4 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) [2022-11-16 11:57:32,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:32,548 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:32,548 INFO L175 Difference]: Start difference. First operand has 195 places, 186 transitions, 446 flow. Second operand 4 states and 705 transitions. [2022-11-16 11:57:32,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 185 transitions, 482 flow [2022-11-16 11:57:32,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 185 transitions, 470 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:57:32,553 INFO L231 Difference]: Finished difference. Result has 194 places, 185 transitions, 440 flow [2022-11-16 11:57:32,553 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=440, PETRI_PLACES=194, PETRI_TRANSITIONS=185} [2022-11-16 11:57:32,554 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, -1 predicate places. [2022-11-16 11:57:32,554 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 185 transitions, 440 flow [2022-11-16 11:57:32,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.2) internal successors, (876), 5 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:32,555 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:32,555 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] [2022-11-16 11:57:32,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:57:32,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:57:32,762 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:32,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:32,762 INFO L85 PathProgramCache]: Analyzing trace with hash -820245586, now seen corresponding path program 1 times [2022-11-16 11:57:32,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:32,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870724225] [2022-11-16 11:57:32,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:32,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:32,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:32,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870724225] [2022-11-16 11:57:32,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870724225] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:32,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030687363] [2022-11-16 11:57:32,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:32,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:32,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:32,837 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:32,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:57:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:57:32,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:32,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:33,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030687363] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:33,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:57:33,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:57:33,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389079952] [2022-11-16 11:57:33,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:33,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:57:33,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:33,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:57:33,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:57:33,035 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 211 [2022-11-16 11:57:33,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 185 transitions, 440 flow. Second operand has 10 states, 10 states have (on average 174.9) internal successors, (1749), 10 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:33,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:33,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 211 [2022-11-16 11:57:33,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:33,200 INFO L130 PetriNetUnfolder]: 7/278 cut-off events. [2022-11-16 11:57:33,200 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2022-11-16 11:57:33,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 278 events. 7/278 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 592 event pairs, 5 based on Foata normal form. 2/255 useless extension candidates. Maximal degree in co-relation 243. Up to 17 conditions per place. [2022-11-16 11:57:33,202 INFO L137 encePairwiseOnDemand]: 205/211 looper letters, 22 selfloop transitions, 9 changer transitions 0/196 dead transitions. [2022-11-16 11:57:33,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 196 transitions, 540 flow [2022-11-16 11:57:33,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:57:33,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:57:33,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1581 transitions. [2022-11-16 11:57:33,207 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8325434439178515 [2022-11-16 11:57:33,207 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1581 transitions. [2022-11-16 11:57:33,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1581 transitions. [2022-11-16 11:57:33,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:33,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1581 transitions. [2022-11-16 11:57:33,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 175.66666666666666) internal successors, (1581), 9 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:33,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 211.0) internal successors, (2110), 10 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:33,220 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 211.0) internal successors, (2110), 10 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:33,220 INFO L175 Difference]: Start difference. First operand has 194 places, 185 transitions, 440 flow. Second operand 9 states and 1581 transitions. [2022-11-16 11:57:33,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 196 transitions, 540 flow [2022-11-16 11:57:33,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 196 transitions, 526 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:57:33,224 INFO L231 Difference]: Finished difference. Result has 203 places, 189 transitions, 486 flow [2022-11-16 11:57:33,224 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=486, PETRI_PLACES=203, PETRI_TRANSITIONS=189} [2022-11-16 11:57:33,225 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 8 predicate places. [2022-11-16 11:57:33,225 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 189 transitions, 486 flow [2022-11-16 11:57:33,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 174.9) internal successors, (1749), 10 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:33,226 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:33,226 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 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] [2022-11-16 11:57:33,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 11:57:33,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:33,432 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:33,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:33,433 INFO L85 PathProgramCache]: Analyzing trace with hash 679102343, now seen corresponding path program 1 times [2022-11-16 11:57:33,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:33,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652809084] [2022-11-16 11:57:33,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:33,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:33,452 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:57:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:33,473 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:57:33,473 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:57:33,473 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-16 11:57:33,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-11-16 11:57:33,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-11-16 11:57:33,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-11-16 11:57:33,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-11-16 11:57:33,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-11-16 11:57:33,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-11-16 11:57:33,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-11-16 11:57:33,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-11-16 11:57:33,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-11-16 11:57:33,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-11-16 11:57:33,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:57:33,475 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 11:57:33,476 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:57:33,476 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-16 11:57:33,500 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 11:57:33,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 234 transitions, 512 flow [2022-11-16 11:57:33,622 INFO L130 PetriNetUnfolder]: 99/863 cut-off events. [2022-11-16 11:57:33,622 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-16 11:57:33,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 863 events. 99/863 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4001 event pairs, 6 based on Foata normal form. 0/696 useless extension candidates. Maximal degree in co-relation 610. Up to 32 conditions per place. [2022-11-16 11:57:33,631 INFO L82 GeneralOperation]: Start removeDead. Operand has 216 places, 234 transitions, 512 flow [2022-11-16 11:57:33,638 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 234 transitions, 512 flow [2022-11-16 11:57:33,639 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:57:33,640 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;@75fb332e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:57:33,640 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-16 11:57:33,645 INFO L130 PetriNetUnfolder]: 2/59 cut-off events. [2022-11-16 11:57:33,645 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:57:33,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:33,645 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:33,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:33,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:33,646 INFO L85 PathProgramCache]: Analyzing trace with hash 531567847, now seen corresponding path program 1 times [2022-11-16 11:57:33,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:33,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007375717] [2022-11-16 11:57:33,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:33,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:33,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:33,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:33,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007375717] [2022-11-16 11:57:33,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007375717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:33,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:33,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:33,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136966615] [2022-11-16 11:57:33,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:33,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:33,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:33,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:33,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:33,722 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 234 [2022-11-16 11:57:33,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 234 transitions, 512 flow. Second operand has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:33,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:33,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 234 [2022-11-16 11:57:33,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:33,928 INFO L130 PetriNetUnfolder]: 28/723 cut-off events. [2022-11-16 11:57:33,928 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2022-11-16 11:57:33,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 857 conditions, 723 events. 28/723 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3436 event pairs, 6 based on Foata normal form. 380/1011 useless extension candidates. Maximal degree in co-relation 590. Up to 71 conditions per place. [2022-11-16 11:57:33,936 INFO L137 encePairwiseOnDemand]: 206/234 looper letters, 23 selfloop transitions, 4 changer transitions 7/216 dead transitions. [2022-11-16 11:57:33,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 216 transitions, 530 flow [2022-11-16 11:57:33,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:33,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:33,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1006 transitions. [2022-11-16 11:57:33,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8598290598290599 [2022-11-16 11:57:33,940 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1006 transitions. [2022-11-16 11:57:33,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1006 transitions. [2022-11-16 11:57:33,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:33,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1006 transitions. [2022-11-16 11:57:33,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 201.2) internal successors, (1006), 5 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:33,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:33,946 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:33,947 INFO L175 Difference]: Start difference. First operand has 216 places, 234 transitions, 512 flow. Second operand 5 states and 1006 transitions. [2022-11-16 11:57:33,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 216 transitions, 530 flow [2022-11-16 11:57:33,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 216 transitions, 530 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:57:33,952 INFO L231 Difference]: Finished difference. Result has 219 places, 205 transitions, 480 flow [2022-11-16 11:57:33,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=480, PETRI_PLACES=219, PETRI_TRANSITIONS=205} [2022-11-16 11:57:33,954 INFO L288 CegarLoopForPetriNet]: 216 programPoint places, 3 predicate places. [2022-11-16 11:57:33,954 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 205 transitions, 480 flow [2022-11-16 11:57:33,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:33,955 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:33,955 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:33,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:57:33,955 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:33,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:33,956 INFO L85 PathProgramCache]: Analyzing trace with hash -684036119, now seen corresponding path program 1 times [2022-11-16 11:57:33,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:33,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253317683] [2022-11-16 11:57:33,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:33,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:34,014 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:57:34,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:34,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253317683] [2022-11-16 11:57:34,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253317683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:34,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:34,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:34,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211003367] [2022-11-16 11:57:34,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:34,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:34,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:34,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:34,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:34,019 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 234 [2022-11-16 11:57:34,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 205 transitions, 480 flow. Second operand has 4 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:34,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:34,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 234 [2022-11-16 11:57:34,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:34,189 INFO L130 PetriNetUnfolder]: 28/608 cut-off events. [2022-11-16 11:57:34,190 INFO L131 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2022-11-16 11:57:34,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 608 events. 28/608 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2717 event pairs, 6 based on Foata normal form. 3/545 useless extension candidates. Maximal degree in co-relation 689. Up to 42 conditions per place. [2022-11-16 11:57:34,195 INFO L137 encePairwiseOnDemand]: 228/234 looper letters, 15 selfloop transitions, 8 changer transitions 0/205 dead transitions. [2022-11-16 11:57:34,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 205 transitions, 524 flow [2022-11-16 11:57:34,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:34,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 966 transitions. [2022-11-16 11:57:34,199 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8256410256410256 [2022-11-16 11:57:34,199 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 966 transitions. [2022-11-16 11:57:34,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 966 transitions. [2022-11-16 11:57:34,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:34,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 966 transitions. [2022-11-16 11:57:34,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 193.2) internal successors, (966), 5 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:34,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:34,206 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:34,206 INFO L175 Difference]: Start difference. First operand has 219 places, 205 transitions, 480 flow. Second operand 5 states and 966 transitions. [2022-11-16 11:57:34,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 205 transitions, 524 flow [2022-11-16 11:57:34,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 205 transitions, 522 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:57:34,211 INFO L231 Difference]: Finished difference. Result has 215 places, 205 transitions, 498 flow [2022-11-16 11:57:34,212 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=215, PETRI_TRANSITIONS=205} [2022-11-16 11:57:34,213 INFO L288 CegarLoopForPetriNet]: 216 programPoint places, -1 predicate places. [2022-11-16 11:57:34,213 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 205 transitions, 498 flow [2022-11-16 11:57:34,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:34,214 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:34,214 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:34,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:57:34,214 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:34,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:34,215 INFO L85 PathProgramCache]: Analyzing trace with hash 269717747, now seen corresponding path program 1 times [2022-11-16 11:57:34,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:34,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711087349] [2022-11-16 11:57:34,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:34,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:34,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:34,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711087349] [2022-11-16 11:57:34,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711087349] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:34,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011946843] [2022-11-16 11:57:34,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:34,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:34,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:34,301 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:34,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:57:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:34,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:57:34,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:34,465 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:34,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:57:34,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011946843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:34,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:57:34,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 11:57:34,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826360405] [2022-11-16 11:57:34,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:34,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:57:34,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:34,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:57:34,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:57:34,470 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 234 [2022-11-16 11:57:34,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 205 transitions, 498 flow. Second operand has 5 states, 5 states have (on average 192.2) internal successors, (961), 5 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:34,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:34,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 234 [2022-11-16 11:57:34,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:34,622 INFO L130 PetriNetUnfolder]: 28/605 cut-off events. [2022-11-16 11:57:34,622 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2022-11-16 11:57:34,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 779 conditions, 605 events. 28/605 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2687 event pairs, 6 based on Foata normal form. 3/542 useless extension candidates. Maximal degree in co-relation 560. Up to 55 conditions per place. [2022-11-16 11:57:34,629 INFO L137 encePairwiseOnDemand]: 230/234 looper letters, 17 selfloop transitions, 5 changer transitions 0/204 dead transitions. [2022-11-16 11:57:34,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 204 transitions, 538 flow [2022-11-16 11:57:34,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:57:34,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:57:34,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 775 transitions. [2022-11-16 11:57:34,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8279914529914529 [2022-11-16 11:57:34,633 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 775 transitions. [2022-11-16 11:57:34,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 775 transitions. [2022-11-16 11:57:34,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:34,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 775 transitions. [2022-11-16 11:57:34,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:34,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 234.0) internal successors, (1170), 5 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:34,638 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 234.0) internal successors, (1170), 5 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:34,639 INFO L175 Difference]: Start difference. First operand has 215 places, 205 transitions, 498 flow. Second operand 4 states and 775 transitions. [2022-11-16 11:57:34,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 204 transitions, 538 flow [2022-11-16 11:57:34,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 204 transitions, 526 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:57:34,644 INFO L231 Difference]: Finished difference. Result has 214 places, 204 transitions, 492 flow [2022-11-16 11:57:34,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=492, PETRI_PLACES=214, PETRI_TRANSITIONS=204} [2022-11-16 11:57:34,645 INFO L288 CegarLoopForPetriNet]: 216 programPoint places, -2 predicate places. [2022-11-16 11:57:34,645 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 204 transitions, 492 flow [2022-11-16 11:57:34,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.2) internal successors, (961), 5 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:34,646 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:34,646 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] [2022-11-16 11:57:34,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:34,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:34,853 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:34,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:34,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1325916423, now seen corresponding path program 1 times [2022-11-16 11:57:34,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:34,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466674079] [2022-11-16 11:57:34,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:34,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:34,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:34,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:34,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466674079] [2022-11-16 11:57:34,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466674079] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:34,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110529849] [2022-11-16 11:57:34,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:34,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:34,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:34,937 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:34,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:57:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:35,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:57:35,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:35,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:35,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:35,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:35,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110529849] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:35,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:57:35,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:57:35,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698923047] [2022-11-16 11:57:35,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:35,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:57:35,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:35,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:57:35,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:57:35,147 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 234 [2022-11-16 11:57:35,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 204 transitions, 492 flow. Second operand has 10 states, 10 states have (on average 191.9) internal successors, (1919), 10 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:35,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:35,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 234 [2022-11-16 11:57:35,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:35,374 INFO L130 PetriNetUnfolder]: 22/473 cut-off events. [2022-11-16 11:57:35,374 INFO L131 PetriNetUnfolder]: For 144/144 co-relation queries the response was YES. [2022-11-16 11:57:35,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 473 events. 22/473 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1746 event pairs, 10 based on Foata normal form. 2/425 useless extension candidates. Maximal degree in co-relation 420. Up to 40 conditions per place. [2022-11-16 11:57:35,379 INFO L137 encePairwiseOnDemand]: 228/234 looper letters, 24 selfloop transitions, 9 changer transitions 0/215 dead transitions. [2022-11-16 11:57:35,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 215 transitions, 596 flow [2022-11-16 11:57:35,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:57:35,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:57:35,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1736 transitions. [2022-11-16 11:57:35,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8243114909781576 [2022-11-16 11:57:35,384 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1736 transitions. [2022-11-16 11:57:35,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1736 transitions. [2022-11-16 11:57:35,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:35,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1736 transitions. [2022-11-16 11:57:35,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 192.88888888888889) internal successors, (1736), 9 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:35,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 234.0) internal successors, (2340), 10 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:35,396 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 234.0) internal successors, (2340), 10 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:35,396 INFO L175 Difference]: Start difference. First operand has 214 places, 204 transitions, 492 flow. Second operand 9 states and 1736 transitions. [2022-11-16 11:57:35,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 215 transitions, 596 flow [2022-11-16 11:57:35,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 215 transitions, 582 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:57:35,401 INFO L231 Difference]: Finished difference. Result has 223 places, 208 transitions, 538 flow [2022-11-16 11:57:35,402 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=538, PETRI_PLACES=223, PETRI_TRANSITIONS=208} [2022-11-16 11:57:35,402 INFO L288 CegarLoopForPetriNet]: 216 programPoint places, 7 predicate places. [2022-11-16 11:57:35,403 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 208 transitions, 538 flow [2022-11-16 11:57:35,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 191.9) internal successors, (1919), 10 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:35,404 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:35,405 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:57:35,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:35,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:57:35,610 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:35,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:35,611 INFO L85 PathProgramCache]: Analyzing trace with hash 797362644, now seen corresponding path program 1 times [2022-11-16 11:57:35,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:35,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906225579] [2022-11-16 11:57:35,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:35,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:35,683 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 11:57:35,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:35,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906225579] [2022-11-16 11:57:35,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906225579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:35,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:35,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:35,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805847764] [2022-11-16 11:57:35,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:35,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:35,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:35,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:35,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:35,687 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 234 [2022-11-16 11:57:35,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 208 transitions, 538 flow. Second operand has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:35,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:35,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 234 [2022-11-16 11:57:35,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:35,864 INFO L130 PetriNetUnfolder]: 24/583 cut-off events. [2022-11-16 11:57:35,865 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2022-11-16 11:57:35,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 583 events. 24/583 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2357 event pairs, 10 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 552. Up to 59 conditions per place. [2022-11-16 11:57:35,873 INFO L137 encePairwiseOnDemand]: 227/234 looper letters, 21 selfloop transitions, 4 changer transitions 0/214 dead transitions. [2022-11-16 11:57:35,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 214 transitions, 600 flow [2022-11-16 11:57:35,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:35,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:35,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 978 transitions. [2022-11-16 11:57:35,876 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8358974358974359 [2022-11-16 11:57:35,876 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 978 transitions. [2022-11-16 11:57:35,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 978 transitions. [2022-11-16 11:57:35,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:35,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 978 transitions. [2022-11-16 11:57:35,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 195.6) internal successors, (978), 5 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:35,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:35,882 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:35,882 INFO L175 Difference]: Start difference. First operand has 223 places, 208 transitions, 538 flow. Second operand 5 states and 978 transitions. [2022-11-16 11:57:35,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 214 transitions, 600 flow [2022-11-16 11:57:35,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 214 transitions, 584 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 11:57:35,889 INFO L231 Difference]: Finished difference. Result has 226 places, 211 transitions, 554 flow [2022-11-16 11:57:35,889 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=554, PETRI_PLACES=226, PETRI_TRANSITIONS=211} [2022-11-16 11:57:35,890 INFO L288 CegarLoopForPetriNet]: 216 programPoint places, 10 predicate places. [2022-11-16 11:57:35,890 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 211 transitions, 554 flow [2022-11-16 11:57:35,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:35,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:35,891 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:35,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:57:35,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:35,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:35,892 INFO L85 PathProgramCache]: Analyzing trace with hash -624891191, now seen corresponding path program 1 times [2022-11-16 11:57:35,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:35,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276342298] [2022-11-16 11:57:35,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:35,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:35,913 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:57:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:35,936 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:57:35,937 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:57:35,937 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-16 11:57:35,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-11-16 11:57:35,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-11-16 11:57:35,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-11-16 11:57:35,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-11-16 11:57:35,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-11-16 11:57:35,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-11-16 11:57:35,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-11-16 11:57:35,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-11-16 11:57:35,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-11-16 11:57:35,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-11-16 11:57:35,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:57:35,939 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-16 11:57:35,940 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:57:35,940 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-16 11:57:35,969 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-16 11:57:35,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 257 transitions, 574 flow [2022-11-16 11:57:36,269 INFO L130 PetriNetUnfolder]: 161/1308 cut-off events. [2022-11-16 11:57:36,269 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-11-16 11:57:36,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1419 conditions, 1308 events. 161/1308 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6805 event pairs, 23 based on Foata normal form. 0/1055 useless extension candidates. Maximal degree in co-relation 908. Up to 80 conditions per place. [2022-11-16 11:57:36,285 INFO L82 GeneralOperation]: Start removeDead. Operand has 237 places, 257 transitions, 574 flow [2022-11-16 11:57:36,296 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 257 transitions, 574 flow [2022-11-16 11:57:36,297 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:57:36,298 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;@75fb332e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:57:36,298 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-16 11:57:36,302 INFO L130 PetriNetUnfolder]: 2/61 cut-off events. [2022-11-16 11:57:36,303 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:57:36,303 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:36,303 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:36,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:36,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:36,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1569107779, now seen corresponding path program 1 times [2022-11-16 11:57:36,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:36,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927330467] [2022-11-16 11:57:36,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:36,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:36,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:36,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927330467] [2022-11-16 11:57:36,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927330467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:36,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:36,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:36,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962926793] [2022-11-16 11:57:36,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:36,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:36,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:36,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:36,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:36,358 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 257 [2022-11-16 11:57:36,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 257 transitions, 574 flow. Second operand has 4 states, 4 states have (on average 207.75) internal successors, (831), 4 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:36,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:36,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 257 [2022-11-16 11:57:36,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:36,677 INFO L130 PetriNetUnfolder]: 63/1140 cut-off events. [2022-11-16 11:57:36,677 INFO L131 PetriNetUnfolder]: For 270/270 co-relation queries the response was YES. [2022-11-16 11:57:36,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 1140 events. 63/1140 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6200 event pairs, 23 based on Foata normal form. 688/1676 useless extension candidates. Maximal degree in co-relation 901. Up to 130 conditions per place. [2022-11-16 11:57:36,689 INFO L137 encePairwiseOnDemand]: 226/257 looper letters, 25 selfloop transitions, 4 changer transitions 7/235 dead transitions. [2022-11-16 11:57:36,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 235 transitions, 588 flow [2022-11-16 11:57:36,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:36,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:36,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1096 transitions. [2022-11-16 11:57:36,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8529182879377432 [2022-11-16 11:57:36,695 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1096 transitions. [2022-11-16 11:57:36,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1096 transitions. [2022-11-16 11:57:36,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:36,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1096 transitions. [2022-11-16 11:57:36,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 219.2) internal successors, (1096), 5 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:36,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 257.0) internal successors, (1542), 6 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:36,701 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 257.0) internal successors, (1542), 6 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:36,702 INFO L175 Difference]: Start difference. First operand has 237 places, 257 transitions, 574 flow. Second operand 5 states and 1096 transitions. [2022-11-16 11:57:36,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 235 transitions, 588 flow [2022-11-16 11:57:36,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 235 transitions, 588 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:57:36,708 INFO L231 Difference]: Finished difference. Result has 239 places, 224 transitions, 534 flow [2022-11-16 11:57:36,709 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=534, PETRI_PLACES=239, PETRI_TRANSITIONS=224} [2022-11-16 11:57:36,710 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 2 predicate places. [2022-11-16 11:57:36,710 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 224 transitions, 534 flow [2022-11-16 11:57:36,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 207.75) internal successors, (831), 4 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:36,711 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:36,711 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:36,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:57:36,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:36,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:36,712 INFO L85 PathProgramCache]: Analyzing trace with hash -2098507500, now seen corresponding path program 1 times [2022-11-16 11:57:36,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:36,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671045488] [2022-11-16 11:57:36,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:36,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:36,771 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:57:36,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:36,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671045488] [2022-11-16 11:57:36,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671045488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:36,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:36,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:36,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468607570] [2022-11-16 11:57:36,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:36,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:36,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:36,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:36,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:36,776 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 257 [2022-11-16 11:57:36,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 224 transitions, 534 flow. Second operand has 4 states, 4 states have (on average 209.75) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:36,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:36,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 257 [2022-11-16 11:57:36,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:37,027 INFO L130 PetriNetUnfolder]: 63/912 cut-off events. [2022-11-16 11:57:37,028 INFO L131 PetriNetUnfolder]: For 281/281 co-relation queries the response was YES. [2022-11-16 11:57:37,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 912 events. 63/912 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4632 event pairs, 23 based on Foata normal form. 4/809 useless extension candidates. Maximal degree in co-relation 1111. Up to 92 conditions per place. [2022-11-16 11:57:37,049 INFO L137 encePairwiseOnDemand]: 251/257 looper letters, 17 selfloop transitions, 8 changer transitions 0/224 dead transitions. [2022-11-16 11:57:37,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 224 transitions, 582 flow [2022-11-16 11:57:37,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:37,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:37,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1053 transitions. [2022-11-16 11:57:37,052 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8194552529182879 [2022-11-16 11:57:37,053 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1053 transitions. [2022-11-16 11:57:37,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1053 transitions. [2022-11-16 11:57:37,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:37,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1053 transitions. [2022-11-16 11:57:37,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 210.6) internal successors, (1053), 5 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:37,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 257.0) internal successors, (1542), 6 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:37,104 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 257.0) internal successors, (1542), 6 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:37,104 INFO L175 Difference]: Start difference. First operand has 239 places, 224 transitions, 534 flow. Second operand 5 states and 1053 transitions. [2022-11-16 11:57:37,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 224 transitions, 582 flow [2022-11-16 11:57:37,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 224 transitions, 580 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:57:37,110 INFO L231 Difference]: Finished difference. Result has 235 places, 224 transitions, 552 flow [2022-11-16 11:57:37,110 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=552, PETRI_PLACES=235, PETRI_TRANSITIONS=224} [2022-11-16 11:57:37,111 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, -2 predicate places. [2022-11-16 11:57:37,111 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 224 transitions, 552 flow [2022-11-16 11:57:37,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 209.75) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:37,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:37,112 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:37,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:57:37,112 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:37,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:37,113 INFO L85 PathProgramCache]: Analyzing trace with hash -629221847, now seen corresponding path program 1 times [2022-11-16 11:57:37,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:37,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653256525] [2022-11-16 11:57:37,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:37,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:37,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:37,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653256525] [2022-11-16 11:57:37,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653256525] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:37,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440578478] [2022-11-16 11:57:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:37,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:37,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:37,223 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:37,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:57:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:37,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:57:37,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:37,412 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:37,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:57:37,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440578478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:37,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:57:37,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 11:57:37,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839120952] [2022-11-16 11:57:37,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:37,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:57:37,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:37,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:57:37,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:57:37,416 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 257 [2022-11-16 11:57:37,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 224 transitions, 552 flow. Second operand has 5 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:37,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:37,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 257 [2022-11-16 11:57:37,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:37,673 INFO L130 PetriNetUnfolder]: 63/908 cut-off events. [2022-11-16 11:57:37,673 INFO L131 PetriNetUnfolder]: For 302/302 co-relation queries the response was YES. [2022-11-16 11:57:37,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 908 events. 63/908 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4602 event pairs, 23 based on Foata normal form. 4/805 useless extension candidates. Maximal degree in co-relation 820. Up to 108 conditions per place. [2022-11-16 11:57:37,687 INFO L137 encePairwiseOnDemand]: 253/257 looper letters, 19 selfloop transitions, 5 changer transitions 0/223 dead transitions. [2022-11-16 11:57:37,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 223 transitions, 596 flow [2022-11-16 11:57:37,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:57:37,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:57:37,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 845 transitions. [2022-11-16 11:57:37,690 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8219844357976653 [2022-11-16 11:57:37,690 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 845 transitions. [2022-11-16 11:57:37,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 845 transitions. [2022-11-16 11:57:37,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:37,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 845 transitions. [2022-11-16 11:57:37,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 211.25) internal successors, (845), 4 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:37,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 257.0) internal successors, (1285), 5 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:37,696 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 257.0) internal successors, (1285), 5 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:37,696 INFO L175 Difference]: Start difference. First operand has 235 places, 224 transitions, 552 flow. Second operand 4 states and 845 transitions. [2022-11-16 11:57:37,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 223 transitions, 596 flow [2022-11-16 11:57:37,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 223 transitions, 584 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:57:37,702 INFO L231 Difference]: Finished difference. Result has 234 places, 223 transitions, 546 flow [2022-11-16 11:57:37,704 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=546, PETRI_PLACES=234, PETRI_TRANSITIONS=223} [2022-11-16 11:57:37,705 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, -3 predicate places. [2022-11-16 11:57:37,705 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 223 transitions, 546 flow [2022-11-16 11:57:37,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:37,706 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:37,706 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] [2022-11-16 11:57:37,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:37,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:37,912 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:37,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:37,913 INFO L85 PathProgramCache]: Analyzing trace with hash 137257092, now seen corresponding path program 1 times [2022-11-16 11:57:37,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:37,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702520188] [2022-11-16 11:57:37,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:37,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:37,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:37,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:37,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702520188] [2022-11-16 11:57:37,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702520188] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:37,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893647902] [2022-11-16 11:57:37,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:37,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:37,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:37,996 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:38,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:57:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:38,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:57:38,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:38,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:38,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893647902] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:38,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:57:38,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:57:38,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080358780] [2022-11-16 11:57:38,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:38,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:57:38,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:38,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:57:38,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:57:38,223 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 257 [2022-11-16 11:57:38,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 223 transitions, 546 flow. Second operand has 10 states, 10 states have (on average 208.9) internal successors, (2089), 10 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:38,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:38,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 257 [2022-11-16 11:57:38,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:38,498 INFO L130 PetriNetUnfolder]: 57/776 cut-off events. [2022-11-16 11:57:38,498 INFO L131 PetriNetUnfolder]: For 308/308 co-relation queries the response was YES. [2022-11-16 11:57:38,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 776 events. 57/776 cut-off events. For 308/308 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3706 event pairs, 27 based on Foata normal form. 2/687 useless extension candidates. Maximal degree in co-relation 679. Up to 91 conditions per place. [2022-11-16 11:57:38,509 INFO L137 encePairwiseOnDemand]: 251/257 looper letters, 26 selfloop transitions, 9 changer transitions 0/234 dead transitions. [2022-11-16 11:57:38,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 234 transitions, 654 flow [2022-11-16 11:57:38,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:57:38,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:57:38,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1891 transitions. [2022-11-16 11:57:38,516 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8175529615218331 [2022-11-16 11:57:38,516 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1891 transitions. [2022-11-16 11:57:38,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1891 transitions. [2022-11-16 11:57:38,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:38,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1891 transitions. [2022-11-16 11:57:38,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 210.11111111111111) internal successors, (1891), 9 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:38,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 257.0) internal successors, (2570), 10 states have internal predecessors, (2570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:38,529 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 257.0) internal successors, (2570), 10 states have internal predecessors, (2570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:38,529 INFO L175 Difference]: Start difference. First operand has 234 places, 223 transitions, 546 flow. Second operand 9 states and 1891 transitions. [2022-11-16 11:57:38,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 234 transitions, 654 flow [2022-11-16 11:57:38,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 234 transitions, 640 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:57:38,535 INFO L231 Difference]: Finished difference. Result has 243 places, 227 transitions, 592 flow [2022-11-16 11:57:38,536 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=592, PETRI_PLACES=243, PETRI_TRANSITIONS=227} [2022-11-16 11:57:38,536 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 6 predicate places. [2022-11-16 11:57:38,536 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 227 transitions, 592 flow [2022-11-16 11:57:38,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 208.9) internal successors, (2089), 10 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:38,538 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:38,538 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:57:38,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:38,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-16 11:57:38,744 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:38,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:38,744 INFO L85 PathProgramCache]: Analyzing trace with hash -989323531, now seen corresponding path program 1 times [2022-11-16 11:57:38,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:38,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522592913] [2022-11-16 11:57:38,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:38,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 11:57:38,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:38,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522592913] [2022-11-16 11:57:38,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522592913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:38,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:38,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:38,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511309492] [2022-11-16 11:57:38,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:38,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:38,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:38,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:38,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:38,821 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 257 [2022-11-16 11:57:38,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 227 transitions, 592 flow. Second operand has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:38,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:38,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 257 [2022-11-16 11:57:38,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:39,078 INFO L130 PetriNetUnfolder]: 60/941 cut-off events. [2022-11-16 11:57:39,078 INFO L131 PetriNetUnfolder]: For 335/335 co-relation queries the response was YES. [2022-11-16 11:57:39,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 941 events. 60/941 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4846 event pairs, 27 based on Foata normal form. 0/835 useless extension candidates. Maximal degree in co-relation 881. Up to 119 conditions per place. [2022-11-16 11:57:39,091 INFO L137 encePairwiseOnDemand]: 250/257 looper letters, 23 selfloop transitions, 4 changer transitions 0/233 dead transitions. [2022-11-16 11:57:39,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 233 transitions, 658 flow [2022-11-16 11:57:39,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:39,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:39,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1065 transitions. [2022-11-16 11:57:39,095 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8287937743190662 [2022-11-16 11:57:39,096 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1065 transitions. [2022-11-16 11:57:39,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1065 transitions. [2022-11-16 11:57:39,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:39,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1065 transitions. [2022-11-16 11:57:39,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 213.0) internal successors, (1065), 5 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:39,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 257.0) internal successors, (1542), 6 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:39,101 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 257.0) internal successors, (1542), 6 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:39,101 INFO L175 Difference]: Start difference. First operand has 243 places, 227 transitions, 592 flow. Second operand 5 states and 1065 transitions. [2022-11-16 11:57:39,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 233 transitions, 658 flow [2022-11-16 11:57:39,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 233 transitions, 642 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 11:57:39,108 INFO L231 Difference]: Finished difference. Result has 246 places, 230 transitions, 608 flow [2022-11-16 11:57:39,108 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=608, PETRI_PLACES=246, PETRI_TRANSITIONS=230} [2022-11-16 11:57:39,109 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 9 predicate places. [2022-11-16 11:57:39,109 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 230 transitions, 608 flow [2022-11-16 11:57:39,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:39,110 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:39,110 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:39,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 11:57:39,110 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:39,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:39,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1709900281, now seen corresponding path program 1 times [2022-11-16 11:57:39,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:39,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337500624] [2022-11-16 11:57:39,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:39,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:39,167 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 11:57:39,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:39,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337500624] [2022-11-16 11:57:39,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337500624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:39,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:39,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:39,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635705664] [2022-11-16 11:57:39,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:39,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:39,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:39,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:39,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:39,170 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 257 [2022-11-16 11:57:39,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 230 transitions, 608 flow. Second operand has 4 states, 4 states have (on average 210.5) internal successors, (842), 4 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:39,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:39,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 257 [2022-11-16 11:57:39,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:39,441 INFO L130 PetriNetUnfolder]: 60/938 cut-off events. [2022-11-16 11:57:39,441 INFO L131 PetriNetUnfolder]: For 343/343 co-relation queries the response was YES. [2022-11-16 11:57:39,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 938 events. 60/938 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4833 event pairs, 27 based on Foata normal form. 3/844 useless extension candidates. Maximal degree in co-relation 902. Up to 98 conditions per place. [2022-11-16 11:57:39,454 INFO L137 encePairwiseOnDemand]: 251/257 looper letters, 16 selfloop transitions, 8 changer transitions 0/230 dead transitions. [2022-11-16 11:57:39,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 230 transitions, 654 flow [2022-11-16 11:57:39,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:39,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:39,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1057 transitions. [2022-11-16 11:57:39,457 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.822568093385214 [2022-11-16 11:57:39,457 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1057 transitions. [2022-11-16 11:57:39,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1057 transitions. [2022-11-16 11:57:39,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:39,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1057 transitions. [2022-11-16 11:57:39,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 211.4) internal successors, (1057), 5 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:39,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 257.0) internal successors, (1542), 6 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:39,462 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 257.0) internal successors, (1542), 6 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:39,463 INFO L175 Difference]: Start difference. First operand has 246 places, 230 transitions, 608 flow. Second operand 5 states and 1057 transitions. [2022-11-16 11:57:39,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 230 transitions, 654 flow [2022-11-16 11:57:39,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 230 transitions, 652 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:57:39,468 INFO L231 Difference]: Finished difference. Result has 249 places, 230 transitions, 626 flow [2022-11-16 11:57:39,469 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=626, PETRI_PLACES=249, PETRI_TRANSITIONS=230} [2022-11-16 11:57:39,469 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 12 predicate places. [2022-11-16 11:57:39,469 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 230 transitions, 626 flow [2022-11-16 11:57:39,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 210.5) internal successors, (842), 4 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:39,470 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:39,470 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:39,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 11:57:39,471 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:39,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:39,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1467302352, now seen corresponding path program 1 times [2022-11-16 11:57:39,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:39,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238242568] [2022-11-16 11:57:39,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:39,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:57:39,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:39,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238242568] [2022-11-16 11:57:39,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238242568] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:39,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238400776] [2022-11-16 11:57:39,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:39,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:39,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:39,635 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:39,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:57:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:39,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:57:39,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:57:39,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:40,011 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:57:40,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238400776] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:40,012 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:57:40,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:57:40,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11563419] [2022-11-16 11:57:40,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:40,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:57:40,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:40,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:57:40,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:57:40,019 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 257 [2022-11-16 11:57:40,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 230 transitions, 626 flow. Second operand has 18 states, 18 states have (on average 209.38888888888889) internal successors, (3769), 18 states have internal predecessors, (3769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:40,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:40,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 257 [2022-11-16 11:57:40,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:40,253 INFO L130 PetriNetUnfolder]: 0/186 cut-off events. [2022-11-16 11:57:40,253 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2022-11-16 11:57:40,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 186 events. 0/186 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 203 event pairs, 0 based on Foata normal form. 3/184 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-16 11:57:40,254 INFO L137 encePairwiseOnDemand]: 252/257 looper letters, 28 selfloop transitions, 16 changer transitions 0/168 dead transitions. [2022-11-16 11:57:40,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 168 transitions, 569 flow [2022-11-16 11:57:40,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:57:40,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:57:40,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3755 transitions. [2022-11-16 11:57:40,262 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8117163856463467 [2022-11-16 11:57:40,263 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3755 transitions. [2022-11-16 11:57:40,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3755 transitions. [2022-11-16 11:57:40,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:40,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3755 transitions. [2022-11-16 11:57:40,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 208.61111111111111) internal successors, (3755), 18 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) [2022-11-16 11:57:40,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 257.0) internal successors, (4883), 19 states have internal predecessors, (4883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:40,287 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 257.0) internal successors, (4883), 19 states have internal predecessors, (4883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:40,287 INFO L175 Difference]: Start difference. First operand has 249 places, 230 transitions, 626 flow. Second operand 18 states and 3755 transitions. [2022-11-16 11:57:40,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 168 transitions, 569 flow [2022-11-16 11:57:40,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 168 transitions, 542 flow, removed 10 selfloop flow, removed 1 redundant places. [2022-11-16 11:57:40,292 INFO L231 Difference]: Finished difference. Result has 185 places, 152 transitions, 440 flow [2022-11-16 11:57:40,294 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=440, PETRI_PLACES=185, PETRI_TRANSITIONS=152} [2022-11-16 11:57:40,295 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, -52 predicate places. [2022-11-16 11:57:40,295 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 152 transitions, 440 flow [2022-11-16 11:57:40,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 209.38888888888889) internal successors, (3769), 18 states have internal predecessors, (3769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:40,297 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:40,297 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:40,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:40,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-16 11:57:40,503 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:40,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:40,503 INFO L85 PathProgramCache]: Analyzing trace with hash 32095373, now seen corresponding path program 1 times [2022-11-16 11:57:40,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:40,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408607095] [2022-11-16 11:57:40,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:40,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:40,536 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:57:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:40,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:57:40,585 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:57:40,585 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-16 11:57:40,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-11-16 11:57:40,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-11-16 11:57:40,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-11-16 11:57:40,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-11-16 11:57:40,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-11-16 11:57:40,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-11-16 11:57:40,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-11-16 11:57:40,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-11-16 11:57:40,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-11-16 11:57:40,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-11-16 11:57:40,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 11:57:40,588 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:40,589 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:57:40,590 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-11-16 11:57:40,637 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-11-16 11:57:40,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 280 transitions, 638 flow [2022-11-16 11:57:41,093 INFO L130 PetriNetUnfolder]: 287/2105 cut-off events. [2022-11-16 11:57:41,093 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2022-11-16 11:57:41,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2337 conditions, 2105 events. 287/2105 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 12751 event pairs, 72 based on Foata normal form. 0/1702 useless extension candidates. Maximal degree in co-relation 1407. Up to 192 conditions per place. [2022-11-16 11:57:41,121 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 280 transitions, 638 flow [2022-11-16 11:57:41,135 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 258 places, 280 transitions, 638 flow [2022-11-16 11:57:41,140 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:57:41,141 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;@75fb332e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:57:41,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-16 11:57:41,146 INFO L130 PetriNetUnfolder]: 2/61 cut-off events. [2022-11-16 11:57:41,146 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:57:41,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:41,146 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:41,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:41,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:41,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1722269034, now seen corresponding path program 1 times [2022-11-16 11:57:41,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:41,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291578384] [2022-11-16 11:57:41,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:41,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:41,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:41,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:41,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291578384] [2022-11-16 11:57:41,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291578384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:41,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:41,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:41,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932387881] [2022-11-16 11:57:41,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:41,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:41,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:41,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:41,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:41,195 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 280 [2022-11-16 11:57:41,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 280 transitions, 638 flow. Second operand has 4 states, 4 states have (on average 224.75) internal successors, (899), 4 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:41,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:41,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 280 [2022-11-16 11:57:41,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:41,700 INFO L130 PetriNetUnfolder]: 146/1893 cut-off events. [2022-11-16 11:57:41,700 INFO L131 PetriNetUnfolder]: For 626/626 co-relation queries the response was YES. [2022-11-16 11:57:41,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2386 conditions, 1893 events. 146/1893 cut-off events. For 626/626 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 12098 event pairs, 72 based on Foata normal form. 1237/2870 useless extension candidates. Maximal degree in co-relation 1433. Up to 253 conditions per place. [2022-11-16 11:57:41,721 INFO L137 encePairwiseOnDemand]: 246/280 looper letters, 27 selfloop transitions, 4 changer transitions 7/254 dead transitions. [2022-11-16 11:57:41,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 254 transitions, 648 flow [2022-11-16 11:57:41,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:41,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:41,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1186 transitions. [2022-11-16 11:57:41,724 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8471428571428572 [2022-11-16 11:57:41,724 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1186 transitions. [2022-11-16 11:57:41,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1186 transitions. [2022-11-16 11:57:41,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:41,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1186 transitions. [2022-11-16 11:57:41,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 237.2) internal successors, (1186), 5 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:41,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:41,730 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:41,730 INFO L175 Difference]: Start difference. First operand has 258 places, 280 transitions, 638 flow. Second operand 5 states and 1186 transitions. [2022-11-16 11:57:41,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 254 transitions, 648 flow [2022-11-16 11:57:41,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 254 transitions, 648 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:57:41,735 INFO L231 Difference]: Finished difference. Result has 259 places, 243 transitions, 590 flow [2022-11-16 11:57:41,736 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=590, PETRI_PLACES=259, PETRI_TRANSITIONS=243} [2022-11-16 11:57:41,737 INFO L288 CegarLoopForPetriNet]: 258 programPoint places, 1 predicate places. [2022-11-16 11:57:41,737 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 243 transitions, 590 flow [2022-11-16 11:57:41,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 224.75) internal successors, (899), 4 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:41,738 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:41,738 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:41,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 11:57:41,738 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:41,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:41,739 INFO L85 PathProgramCache]: Analyzing trace with hash -268656170, now seen corresponding path program 1 times [2022-11-16 11:57:41,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:41,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173470540] [2022-11-16 11:57:41,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:41,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:57:41,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:41,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173470540] [2022-11-16 11:57:41,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173470540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:41,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:41,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:41,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635881063] [2022-11-16 11:57:41,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:41,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:41,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:41,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:41,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:41,784 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 280 [2022-11-16 11:57:41,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 243 transitions, 590 flow. Second operand has 4 states, 4 states have (on average 226.75) internal successors, (907), 4 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:41,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:41,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 280 [2022-11-16 11:57:41,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:42,191 INFO L130 PetriNetUnfolder]: 146/1440 cut-off events. [2022-11-16 11:57:42,192 INFO L131 PetriNetUnfolder]: For 638/638 co-relation queries the response was YES. [2022-11-16 11:57:42,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1965 conditions, 1440 events. 146/1440 cut-off events. For 638/638 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 8438 event pairs, 72 based on Foata normal form. 5/1265 useless extension candidates. Maximal degree in co-relation 1886. Up to 206 conditions per place. [2022-11-16 11:57:42,208 INFO L137 encePairwiseOnDemand]: 274/280 looper letters, 19 selfloop transitions, 8 changer transitions 0/243 dead transitions. [2022-11-16 11:57:42,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 243 transitions, 642 flow [2022-11-16 11:57:42,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:42,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:42,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1140 transitions. [2022-11-16 11:57:42,211 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8142857142857143 [2022-11-16 11:57:42,211 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1140 transitions. [2022-11-16 11:57:42,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1140 transitions. [2022-11-16 11:57:42,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:42,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1140 transitions. [2022-11-16 11:57:42,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:42,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:42,217 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:42,217 INFO L175 Difference]: Start difference. First operand has 259 places, 243 transitions, 590 flow. Second operand 5 states and 1140 transitions. [2022-11-16 11:57:42,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 243 transitions, 642 flow [2022-11-16 11:57:42,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 243 transitions, 640 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:57:42,222 INFO L231 Difference]: Finished difference. Result has 255 places, 243 transitions, 608 flow [2022-11-16 11:57:42,223 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=608, PETRI_PLACES=255, PETRI_TRANSITIONS=243} [2022-11-16 11:57:42,224 INFO L288 CegarLoopForPetriNet]: 258 programPoint places, -3 predicate places. [2022-11-16 11:57:42,224 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 243 transitions, 608 flow [2022-11-16 11:57:42,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 226.75) internal successors, (907), 4 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:42,224 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:42,225 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:42,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 11:57:42,225 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:42,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:42,225 INFO L85 PathProgramCache]: Analyzing trace with hash 261594815, now seen corresponding path program 1 times [2022-11-16 11:57:42,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:42,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849887718] [2022-11-16 11:57:42,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:42,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:42,298 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:42,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:42,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849887718] [2022-11-16 11:57:42,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849887718] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:42,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276532493] [2022-11-16 11:57:42,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:42,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:42,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:42,303 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:42,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:57:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:42,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:57:42,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:42,484 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:42,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:57:42,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276532493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:42,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:57:42,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 11:57:42,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777186179] [2022-11-16 11:57:42,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:42,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:57:42,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:42,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:57:42,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:57:42,488 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 280 [2022-11-16 11:57:42,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 243 transitions, 608 flow. Second operand has 5 states, 5 states have (on average 226.2) internal successors, (1131), 5 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:42,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:42,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 280 [2022-11-16 11:57:42,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:42,982 INFO L130 PetriNetUnfolder]: 146/1435 cut-off events. [2022-11-16 11:57:42,982 INFO L131 PetriNetUnfolder]: For 663/663 co-relation queries the response was YES. [2022-11-16 11:57:42,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1982 conditions, 1435 events. 146/1435 cut-off events. For 663/663 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 8381 event pairs, 72 based on Foata normal form. 5/1260 useless extension candidates. Maximal degree in co-relation 1245. Up to 225 conditions per place. [2022-11-16 11:57:43,001 INFO L137 encePairwiseOnDemand]: 276/280 looper letters, 21 selfloop transitions, 5 changer transitions 0/242 dead transitions. [2022-11-16 11:57:43,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 242 transitions, 656 flow [2022-11-16 11:57:43,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:57:43,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:57:43,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 915 transitions. [2022-11-16 11:57:43,004 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8169642857142857 [2022-11-16 11:57:43,005 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 915 transitions. [2022-11-16 11:57:43,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 915 transitions. [2022-11-16 11:57:43,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:43,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 915 transitions. [2022-11-16 11:57:43,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 228.75) internal successors, (915), 4 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:43,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:43,010 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:43,011 INFO L175 Difference]: Start difference. First operand has 255 places, 243 transitions, 608 flow. Second operand 4 states and 915 transitions. [2022-11-16 11:57:43,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 242 transitions, 656 flow [2022-11-16 11:57:43,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 242 transitions, 644 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:57:43,018 INFO L231 Difference]: Finished difference. Result has 254 places, 242 transitions, 602 flow [2022-11-16 11:57:43,018 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=602, PETRI_PLACES=254, PETRI_TRANSITIONS=242} [2022-11-16 11:57:43,019 INFO L288 CegarLoopForPetriNet]: 258 programPoint places, -4 predicate places. [2022-11-16 11:57:43,019 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 242 transitions, 602 flow [2022-11-16 11:57:43,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 226.2) internal successors, (1131), 5 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:43,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:43,020 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] [2022-11-16 11:57:43,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-16 11:57:43,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-16 11:57:43,226 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:43,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:43,226 INFO L85 PathProgramCache]: Analyzing trace with hash -725692337, now seen corresponding path program 1 times [2022-11-16 11:57:43,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:43,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052459518] [2022-11-16 11:57:43,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:43,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:43,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:43,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:43,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052459518] [2022-11-16 11:57:43,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052459518] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:43,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217123298] [2022-11-16 11:57:43,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:43,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:43,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:43,370 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:43,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:57:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:43,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:57:43,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:43,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:43,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217123298] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:43,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:57:43,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:57:43,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978201172] [2022-11-16 11:57:43,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:43,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:57:43,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:43,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:57:43,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:57:43,588 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 280 [2022-11-16 11:57:43,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 242 transitions, 602 flow. Second operand has 10 states, 10 states have (on average 225.9) internal successors, (2259), 10 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:43,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:43,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 280 [2022-11-16 11:57:43,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:44,030 INFO L130 PetriNetUnfolder]: 140/1303 cut-off events. [2022-11-16 11:57:44,030 INFO L131 PetriNetUnfolder]: For 670/670 co-relation queries the response was YES. [2022-11-16 11:57:44,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1841 conditions, 1303 events. 140/1303 cut-off events. For 670/670 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7457 event pairs, 76 based on Foata normal form. 2/1141 useless extension candidates. Maximal degree in co-relation 1103. Up to 206 conditions per place. [2022-11-16 11:57:44,055 INFO L137 encePairwiseOnDemand]: 274/280 looper letters, 28 selfloop transitions, 9 changer transitions 0/253 dead transitions. [2022-11-16 11:57:44,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 253 transitions, 714 flow [2022-11-16 11:57:44,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:57:44,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:57:44,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2046 transitions. [2022-11-16 11:57:44,059 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8119047619047619 [2022-11-16 11:57:44,060 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2046 transitions. [2022-11-16 11:57:44,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2046 transitions. [2022-11-16 11:57:44,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:44,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2046 transitions. [2022-11-16 11:57:44,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 227.33333333333334) internal successors, (2046), 9 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:44,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 280.0) internal successors, (2800), 10 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:44,071 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 280.0) internal successors, (2800), 10 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:44,071 INFO L175 Difference]: Start difference. First operand has 254 places, 242 transitions, 602 flow. Second operand 9 states and 2046 transitions. [2022-11-16 11:57:44,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 253 transitions, 714 flow [2022-11-16 11:57:44,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 253 transitions, 700 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:57:44,078 INFO L231 Difference]: Finished difference. Result has 263 places, 246 transitions, 648 flow [2022-11-16 11:57:44,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=648, PETRI_PLACES=263, PETRI_TRANSITIONS=246} [2022-11-16 11:57:44,079 INFO L288 CegarLoopForPetriNet]: 258 programPoint places, 5 predicate places. [2022-11-16 11:57:44,079 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 246 transitions, 648 flow [2022-11-16 11:57:44,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 225.9) internal successors, (2259), 10 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:44,080 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:44,081 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:57:44,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:44,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:44,287 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:44,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:44,288 INFO L85 PathProgramCache]: Analyzing trace with hash -123956010, now seen corresponding path program 1 times [2022-11-16 11:57:44,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:44,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650878335] [2022-11-16 11:57:44,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:44,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 11:57:44,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:44,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650878335] [2022-11-16 11:57:44,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650878335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:44,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:44,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:44,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927576561] [2022-11-16 11:57:44,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:44,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:44,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:44,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:44,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:44,359 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 280 [2022-11-16 11:57:44,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 246 transitions, 648 flow. Second operand has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:44,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:44,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 280 [2022-11-16 11:57:44,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:44,777 INFO L130 PetriNetUnfolder]: 144/1523 cut-off events. [2022-11-16 11:57:44,777 INFO L131 PetriNetUnfolder]: For 708/708 co-relation queries the response was YES. [2022-11-16 11:57:44,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2113 conditions, 1523 events. 144/1523 cut-off events. For 708/708 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 9102 event pairs, 76 based on Foata normal form. 0/1339 useless extension candidates. Maximal degree in co-relation 1375. Up to 243 conditions per place. [2022-11-16 11:57:44,806 INFO L137 encePairwiseOnDemand]: 273/280 looper letters, 25 selfloop transitions, 4 changer transitions 0/252 dead transitions. [2022-11-16 11:57:44,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 252 transitions, 718 flow [2022-11-16 11:57:44,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:44,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1152 transitions. [2022-11-16 11:57:44,809 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8228571428571428 [2022-11-16 11:57:44,809 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1152 transitions. [2022-11-16 11:57:44,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1152 transitions. [2022-11-16 11:57:44,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:44,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1152 transitions. [2022-11-16 11:57:44,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 230.4) internal successors, (1152), 5 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:44,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:44,815 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:44,815 INFO L175 Difference]: Start difference. First operand has 263 places, 246 transitions, 648 flow. Second operand 5 states and 1152 transitions. [2022-11-16 11:57:44,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 252 transitions, 718 flow [2022-11-16 11:57:44,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 252 transitions, 702 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 11:57:44,821 INFO L231 Difference]: Finished difference. Result has 266 places, 249 transitions, 664 flow [2022-11-16 11:57:44,822 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=664, PETRI_PLACES=266, PETRI_TRANSITIONS=249} [2022-11-16 11:57:44,823 INFO L288 CegarLoopForPetriNet]: 258 programPoint places, 8 predicate places. [2022-11-16 11:57:44,823 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 249 transitions, 664 flow [2022-11-16 11:57:44,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:44,823 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:44,824 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:44,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 11:57:44,824 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:44,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:44,825 INFO L85 PathProgramCache]: Analyzing trace with hash -792457648, now seen corresponding path program 1 times [2022-11-16 11:57:44,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:44,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452159013] [2022-11-16 11:57:44,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:44,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:44,881 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 11:57:44,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:44,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452159013] [2022-11-16 11:57:44,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452159013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:44,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:44,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:44,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838856978] [2022-11-16 11:57:44,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:44,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:44,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:44,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:44,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:44,884 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 280 [2022-11-16 11:57:44,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 249 transitions, 664 flow. Second operand has 4 states, 4 states have (on average 227.5) internal successors, (910), 4 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:44,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:44,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 280 [2022-11-16 11:57:44,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:45,347 INFO L130 PetriNetUnfolder]: 144/1519 cut-off events. [2022-11-16 11:57:45,348 INFO L131 PetriNetUnfolder]: For 722/722 co-relation queries the response was YES. [2022-11-16 11:57:45,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2145 conditions, 1519 events. 144/1519 cut-off events. For 722/722 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 9103 event pairs, 76 based on Foata normal form. 4/1351 useless extension candidates. Maximal degree in co-relation 1405. Up to 215 conditions per place. [2022-11-16 11:57:45,371 INFO L137 encePairwiseOnDemand]: 274/280 looper letters, 18 selfloop transitions, 8 changer transitions 0/249 dead transitions. [2022-11-16 11:57:45,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 249 transitions, 714 flow [2022-11-16 11:57:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:45,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:45,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1144 transitions. [2022-11-16 11:57:45,374 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8171428571428572 [2022-11-16 11:57:45,374 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1144 transitions. [2022-11-16 11:57:45,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1144 transitions. [2022-11-16 11:57:45,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:45,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1144 transitions. [2022-11-16 11:57:45,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 228.8) internal successors, (1144), 5 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:45,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:45,379 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:45,380 INFO L175 Difference]: Start difference. First operand has 266 places, 249 transitions, 664 flow. Second operand 5 states and 1144 transitions. [2022-11-16 11:57:45,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 249 transitions, 714 flow [2022-11-16 11:57:45,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 249 transitions, 712 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:57:45,386 INFO L231 Difference]: Finished difference. Result has 269 places, 249 transitions, 682 flow [2022-11-16 11:57:45,387 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=682, PETRI_PLACES=269, PETRI_TRANSITIONS=249} [2022-11-16 11:57:45,387 INFO L288 CegarLoopForPetriNet]: 258 programPoint places, 11 predicate places. [2022-11-16 11:57:45,387 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 249 transitions, 682 flow [2022-11-16 11:57:45,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 227.5) internal successors, (910), 4 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:45,388 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:45,388 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:45,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-16 11:57:45,388 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:45,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:45,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1203618161, now seen corresponding path program 1 times [2022-11-16 11:57:45,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:45,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402059541] [2022-11-16 11:57:45,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:45,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:57:45,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:45,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402059541] [2022-11-16 11:57:45,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402059541] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:45,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111136302] [2022-11-16 11:57:45,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:45,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:45,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:45,551 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:45,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:57:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:45,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:57:45,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:57:45,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:45,926 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:57:45,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111136302] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:45,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:57:45,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:57:45,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222726431] [2022-11-16 11:57:45,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:45,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:57:45,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:45,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:57:45,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:57:45,931 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 280 [2022-11-16 11:57:45,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 249 transitions, 682 flow. Second operand has 18 states, 18 states have (on average 226.38888888888889) internal successors, (4075), 18 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:45,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:45,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 280 [2022-11-16 11:57:45,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:46,227 INFO L130 PetriNetUnfolder]: 0/215 cut-off events. [2022-11-16 11:57:46,227 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2022-11-16 11:57:46,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 215 events. 0/215 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 246 event pairs, 0 based on Foata normal form. 4/213 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2022-11-16 11:57:46,228 INFO L137 encePairwiseOnDemand]: 275/280 looper letters, 33 selfloop transitions, 19 changer transitions 0/193 dead transitions. [2022-11-16 11:57:46,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 193 transitions, 670 flow [2022-11-16 11:57:46,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:57:46,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:57:46,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4739 transitions. [2022-11-16 11:57:46,238 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.805952380952381 [2022-11-16 11:57:46,239 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4739 transitions. [2022-11-16 11:57:46,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4739 transitions. [2022-11-16 11:57:46,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:46,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4739 transitions. [2022-11-16 11:57:46,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 225.66666666666666) internal successors, (4739), 21 states have internal predecessors, (4739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:46,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 280.0) internal successors, (6160), 22 states have internal predecessors, (6160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:46,260 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 280.0) internal successors, (6160), 22 states have internal predecessors, (6160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:46,261 INFO L175 Difference]: Start difference. First operand has 269 places, 249 transitions, 682 flow. Second operand 21 states and 4739 transitions. [2022-11-16 11:57:46,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 193 transitions, 670 flow [2022-11-16 11:57:46,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 193 transitions, 631 flow, removed 15 selfloop flow, removed 1 redundant places. [2022-11-16 11:57:46,266 INFO L231 Difference]: Finished difference. Result has 208 places, 173 transitions, 506 flow [2022-11-16 11:57:46,266 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=506, PETRI_PLACES=208, PETRI_TRANSITIONS=173} [2022-11-16 11:57:46,271 INFO L288 CegarLoopForPetriNet]: 258 programPoint places, -50 predicate places. [2022-11-16 11:57:46,271 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 173 transitions, 506 flow [2022-11-16 11:57:46,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 226.38888888888889) internal successors, (4075), 18 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:46,273 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:46,273 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:46,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:46,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:46,480 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:46,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:46,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1569466093, now seen corresponding path program 1 times [2022-11-16 11:57:46,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:46,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553927437] [2022-11-16 11:57:46,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:46,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:46,506 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:57:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:46,541 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:57:46,541 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:57:46,542 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-16 11:57:46,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-11-16 11:57:46,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-11-16 11:57:46,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-11-16 11:57:46,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-11-16 11:57:46,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-11-16 11:57:46,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-11-16 11:57:46,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-11-16 11:57:46,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-11-16 11:57:46,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-11-16 11:57:46,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-11-16 11:57:46,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-16 11:57:46,545 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:46,549 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:57:46,549 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2022-11-16 11:57:46,594 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2022-11-16 11:57:46,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 303 transitions, 704 flow [2022-11-16 11:57:47,391 INFO L130 PetriNetUnfolder]: 557/3622 cut-off events. [2022-11-16 11:57:47,392 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2022-11-16 11:57:47,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4120 conditions, 3622 events. 557/3622 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 26050 event pairs, 201 based on Foata normal form. 0/2941 useless extension candidates. Maximal degree in co-relation 2323. Up to 448 conditions per place. [2022-11-16 11:57:47,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 279 places, 303 transitions, 704 flow [2022-11-16 11:57:47,471 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 303 transitions, 704 flow [2022-11-16 11:57:47,472 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:57:47,473 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;@75fb332e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:57:47,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-16 11:57:47,479 INFO L130 PetriNetUnfolder]: 2/61 cut-off events. [2022-11-16 11:57:47,479 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:57:47,480 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:47,480 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:47,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:47,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:47,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1815763694, now seen corresponding path program 1 times [2022-11-16 11:57:47,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:47,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831033701] [2022-11-16 11:57:47,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:47,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:47,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:47,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:47,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831033701] [2022-11-16 11:57:47,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831033701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:47,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:47,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:47,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832446942] [2022-11-16 11:57:47,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:47,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:47,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:47,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:47,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:47,532 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 303 [2022-11-16 11:57:47,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 303 transitions, 704 flow. Second operand has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:47,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:47,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 303 [2022-11-16 11:57:47,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:48,390 INFO L130 PetriNetUnfolder]: 341/3334 cut-off events. [2022-11-16 11:57:48,390 INFO L131 PetriNetUnfolder]: For 1421/1421 co-relation queries the response was YES. [2022-11-16 11:57:48,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4360 conditions, 3334 events. 341/3334 cut-off events. For 1421/1421 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 25161 event pairs, 201 based on Foata normal form. 2283/5153 useless extension candidates. Maximal degree in co-relation 2430. Up to 520 conditions per place. [2022-11-16 11:57:48,438 INFO L137 encePairwiseOnDemand]: 266/303 looper letters, 29 selfloop transitions, 4 changer transitions 7/273 dead transitions. [2022-11-16 11:57:48,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 273 transitions, 710 flow [2022-11-16 11:57:48,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:48,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:48,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1276 transitions. [2022-11-16 11:57:48,442 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8422442244224423 [2022-11-16 11:57:48,442 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1276 transitions. [2022-11-16 11:57:48,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1276 transitions. [2022-11-16 11:57:48,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:48,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1276 transitions. [2022-11-16 11:57:48,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 255.2) internal successors, (1276), 5 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:48,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 303.0) internal successors, (1818), 6 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:48,448 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 303.0) internal successors, (1818), 6 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:48,449 INFO L175 Difference]: Start difference. First operand has 279 places, 303 transitions, 704 flow. Second operand 5 states and 1276 transitions. [2022-11-16 11:57:48,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 273 transitions, 710 flow [2022-11-16 11:57:48,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 273 transitions, 710 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:57:48,455 INFO L231 Difference]: Finished difference. Result has 279 places, 262 transitions, 648 flow [2022-11-16 11:57:48,456 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=648, PETRI_PLACES=279, PETRI_TRANSITIONS=262} [2022-11-16 11:57:48,457 INFO L288 CegarLoopForPetriNet]: 279 programPoint places, 0 predicate places. [2022-11-16 11:57:48,457 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 262 transitions, 648 flow [2022-11-16 11:57:48,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:48,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:48,458 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:48,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-16 11:57:48,458 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:48,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:48,459 INFO L85 PathProgramCache]: Analyzing trace with hash 510550575, now seen corresponding path program 1 times [2022-11-16 11:57:48,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:48,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539362736] [2022-11-16 11:57:48,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:48,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:48,502 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:57:48,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:48,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539362736] [2022-11-16 11:57:48,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539362736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:48,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:48,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:48,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975559956] [2022-11-16 11:57:48,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:48,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:48,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:48,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:48,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:48,506 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 303 [2022-11-16 11:57:48,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 262 transitions, 648 flow. Second operand has 4 states, 4 states have (on average 243.75) internal successors, (975), 4 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:48,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:48,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 303 [2022-11-16 11:57:48,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:49,183 INFO L130 PetriNetUnfolder]: 341/2432 cut-off events. [2022-11-16 11:57:49,184 INFO L131 PetriNetUnfolder]: For 1434/1434 co-relation queries the response was YES. [2022-11-16 11:57:49,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3494 conditions, 2432 events. 341/2432 cut-off events. For 1434/1434 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 16380 event pairs, 201 based on Foata normal form. 6/2121 useless extension candidates. Maximal degree in co-relation 3414. Up to 464 conditions per place. [2022-11-16 11:57:49,233 INFO L137 encePairwiseOnDemand]: 297/303 looper letters, 21 selfloop transitions, 8 changer transitions 0/262 dead transitions. [2022-11-16 11:57:49,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 262 transitions, 704 flow [2022-11-16 11:57:49,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:49,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:49,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1227 transitions. [2022-11-16 11:57:49,236 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.80990099009901 [2022-11-16 11:57:49,237 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1227 transitions. [2022-11-16 11:57:49,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1227 transitions. [2022-11-16 11:57:49,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:49,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1227 transitions. [2022-11-16 11:57:49,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 245.4) internal successors, (1227), 5 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:49,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 303.0) internal successors, (1818), 6 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:49,243 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 303.0) internal successors, (1818), 6 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:49,244 INFO L175 Difference]: Start difference. First operand has 279 places, 262 transitions, 648 flow. Second operand 5 states and 1227 transitions. [2022-11-16 11:57:49,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 262 transitions, 704 flow [2022-11-16 11:57:49,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 262 transitions, 702 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:57:49,251 INFO L231 Difference]: Finished difference. Result has 275 places, 262 transitions, 666 flow [2022-11-16 11:57:49,251 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=666, PETRI_PLACES=275, PETRI_TRANSITIONS=262} [2022-11-16 11:57:49,252 INFO L288 CegarLoopForPetriNet]: 279 programPoint places, -4 predicate places. [2022-11-16 11:57:49,252 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 262 transitions, 666 flow [2022-11-16 11:57:49,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.75) internal successors, (975), 4 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:49,252 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:49,253 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:49,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-16 11:57:49,253 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:49,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:49,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1352799563, now seen corresponding path program 1 times [2022-11-16 11:57:49,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:49,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009887440] [2022-11-16 11:57:49,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:49,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:49,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:49,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009887440] [2022-11-16 11:57:49,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009887440] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:49,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020456305] [2022-11-16 11:57:49,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:49,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:49,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:49,331 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:49,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 11:57:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:49,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:57:49,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:49,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:49,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:57:49,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020456305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:49,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:57:49,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 11:57:49,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109015374] [2022-11-16 11:57:49,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:49,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:57:49,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:49,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:57:49,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:57:49,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 303 [2022-11-16 11:57:49,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 262 transitions, 666 flow. Second operand has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:49,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:49,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 303 [2022-11-16 11:57:49,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:50,110 INFO L130 PetriNetUnfolder]: 341/2426 cut-off events. [2022-11-16 11:57:50,110 INFO L131 PetriNetUnfolder]: For 1463/1463 co-relation queries the response was YES. [2022-11-16 11:57:50,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3513 conditions, 2426 events. 341/2426 cut-off events. For 1463/1463 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 16331 event pairs, 201 based on Foata normal form. 6/2115 useless extension candidates. Maximal degree in co-relation 2023. Up to 486 conditions per place. [2022-11-16 11:57:50,141 INFO L137 encePairwiseOnDemand]: 299/303 looper letters, 23 selfloop transitions, 5 changer transitions 0/261 dead transitions. [2022-11-16 11:57:50,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 261 transitions, 718 flow [2022-11-16 11:57:50,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:57:50,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:57:50,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 985 transitions. [2022-11-16 11:57:50,143 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8127062706270627 [2022-11-16 11:57:50,144 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 985 transitions. [2022-11-16 11:57:50,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 985 transitions. [2022-11-16 11:57:50,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:50,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 985 transitions. [2022-11-16 11:57:50,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 246.25) internal successors, (985), 4 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:50,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 303.0) internal successors, (1515), 5 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:50,148 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 303.0) internal successors, (1515), 5 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:50,149 INFO L175 Difference]: Start difference. First operand has 275 places, 262 transitions, 666 flow. Second operand 4 states and 985 transitions. [2022-11-16 11:57:50,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 261 transitions, 718 flow [2022-11-16 11:57:50,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 261 transitions, 706 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:57:50,155 INFO L231 Difference]: Finished difference. Result has 274 places, 261 transitions, 660 flow [2022-11-16 11:57:50,156 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=660, PETRI_PLACES=274, PETRI_TRANSITIONS=261} [2022-11-16 11:57:50,156 INFO L288 CegarLoopForPetriNet]: 279 programPoint places, -5 predicate places. [2022-11-16 11:57:50,157 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 261 transitions, 660 flow [2022-11-16 11:57:50,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:50,157 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:50,157 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] [2022-11-16 11:57:50,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:50,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-16 11:57:50,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:50,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:50,364 INFO L85 PathProgramCache]: Analyzing trace with hash 380202586, now seen corresponding path program 1 times [2022-11-16 11:57:50,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:50,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008659913] [2022-11-16 11:57:50,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:50,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:50,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:50,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:50,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008659913] [2022-11-16 11:57:50,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008659913] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:50,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527343851] [2022-11-16 11:57:50,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:50,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:50,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:50,418 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:50,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 11:57:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:50,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:57:50,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:50,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:50,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:50,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:50,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527343851] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:50,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:57:50,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:57:50,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984879158] [2022-11-16 11:57:50,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:50,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:57:50,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:50,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:57:50,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:57:50,650 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 303 [2022-11-16 11:57:50,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 261 transitions, 660 flow. Second operand has 10 states, 10 states have (on average 242.9) internal successors, (2429), 10 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:50,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:50,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 303 [2022-11-16 11:57:50,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:51,374 INFO L130 PetriNetUnfolder]: 335/2294 cut-off events. [2022-11-16 11:57:51,375 INFO L131 PetriNetUnfolder]: For 1471/1471 co-relation queries the response was YES. [2022-11-16 11:57:51,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3371 conditions, 2294 events. 335/2294 cut-off events. For 1471/1471 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 15454 event pairs, 205 based on Foata normal form. 2/1995 useless extension candidates. Maximal degree in co-relation 1880. Up to 465 conditions per place. [2022-11-16 11:57:51,404 INFO L137 encePairwiseOnDemand]: 297/303 looper letters, 30 selfloop transitions, 9 changer transitions 0/272 dead transitions. [2022-11-16 11:57:51,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 272 transitions, 776 flow [2022-11-16 11:57:51,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:57:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:57:51,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2201 transitions. [2022-11-16 11:57:51,409 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8071140447378071 [2022-11-16 11:57:51,410 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2201 transitions. [2022-11-16 11:57:51,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2201 transitions. [2022-11-16 11:57:51,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:51,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2201 transitions. [2022-11-16 11:57:51,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 244.55555555555554) internal successors, (2201), 9 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:51,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 303.0) internal successors, (3030), 10 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:51,422 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 303.0) internal successors, (3030), 10 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:51,423 INFO L175 Difference]: Start difference. First operand has 274 places, 261 transitions, 660 flow. Second operand 9 states and 2201 transitions. [2022-11-16 11:57:51,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 272 transitions, 776 flow [2022-11-16 11:57:51,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 272 transitions, 762 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:57:51,431 INFO L231 Difference]: Finished difference. Result has 283 places, 265 transitions, 706 flow [2022-11-16 11:57:51,431 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=706, PETRI_PLACES=283, PETRI_TRANSITIONS=265} [2022-11-16 11:57:51,432 INFO L288 CegarLoopForPetriNet]: 279 programPoint places, 4 predicate places. [2022-11-16 11:57:51,432 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 265 transitions, 706 flow [2022-11-16 11:57:51,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 242.9) internal successors, (2429), 10 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:51,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:51,434 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:57:51,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:51,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-16 11:57:51,640 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:51,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:51,640 INFO L85 PathProgramCache]: Analyzing trace with hash -901502089, now seen corresponding path program 1 times [2022-11-16 11:57:51,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:51,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530876762] [2022-11-16 11:57:51,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:51,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:51,731 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 11:57:51,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:51,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530876762] [2022-11-16 11:57:51,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530876762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:51,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:51,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:51,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947727018] [2022-11-16 11:57:51,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:51,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:51,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:51,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:51,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:51,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 303 [2022-11-16 11:57:51,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 265 transitions, 706 flow. Second operand has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:51,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:51,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 303 [2022-11-16 11:57:51,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:52,521 INFO L130 PetriNetUnfolder]: 340/2569 cut-off events. [2022-11-16 11:57:52,521 INFO L131 PetriNetUnfolder]: For 1521/1521 co-relation queries the response was YES. [2022-11-16 11:57:52,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3713 conditions, 2569 events. 340/2569 cut-off events. For 1521/1521 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 17728 event pairs, 205 based on Foata normal form. 0/2243 useless extension candidates. Maximal degree in co-relation 2222. Up to 511 conditions per place. [2022-11-16 11:57:52,594 INFO L137 encePairwiseOnDemand]: 296/303 looper letters, 27 selfloop transitions, 4 changer transitions 0/271 dead transitions. [2022-11-16 11:57:52,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 271 transitions, 780 flow [2022-11-16 11:57:52,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:52,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:52,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1239 transitions. [2022-11-16 11:57:52,597 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8178217821782178 [2022-11-16 11:57:52,598 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1239 transitions. [2022-11-16 11:57:52,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1239 transitions. [2022-11-16 11:57:52,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:52,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1239 transitions. [2022-11-16 11:57:52,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 247.8) internal successors, (1239), 5 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:52,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 303.0) internal successors, (1818), 6 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:52,603 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 303.0) internal successors, (1818), 6 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:52,603 INFO L175 Difference]: Start difference. First operand has 283 places, 265 transitions, 706 flow. Second operand 5 states and 1239 transitions. [2022-11-16 11:57:52,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 271 transitions, 780 flow [2022-11-16 11:57:52,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 271 transitions, 764 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 11:57:52,610 INFO L231 Difference]: Finished difference. Result has 286 places, 268 transitions, 722 flow [2022-11-16 11:57:52,611 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=722, PETRI_PLACES=286, PETRI_TRANSITIONS=268} [2022-11-16 11:57:52,611 INFO L288 CegarLoopForPetriNet]: 279 programPoint places, 7 predicate places. [2022-11-16 11:57:52,611 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 268 transitions, 722 flow [2022-11-16 11:57:52,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:52,612 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:52,612 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:52,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-16 11:57:52,613 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:52,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:52,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1195276674, now seen corresponding path program 1 times [2022-11-16 11:57:52,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:52,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818043658] [2022-11-16 11:57:52,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:52,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:52,661 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 11:57:52,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:52,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818043658] [2022-11-16 11:57:52,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818043658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:52,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:52,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:52,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273674137] [2022-11-16 11:57:52,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:52,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:52,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:52,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:52,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:52,664 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 303 [2022-11-16 11:57:52,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 268 transitions, 722 flow. Second operand has 4 states, 4 states have (on average 244.5) internal successors, (978), 4 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:52,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:52,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 303 [2022-11-16 11:57:52,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:53,394 INFO L130 PetriNetUnfolder]: 340/2564 cut-off events. [2022-11-16 11:57:53,394 INFO L131 PetriNetUnfolder]: For 1541/1541 co-relation queries the response was YES. [2022-11-16 11:57:53,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3754 conditions, 2564 events. 340/2564 cut-off events. For 1541/1541 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 17712 event pairs, 205 based on Foata normal form. 5/2258 useless extension candidates. Maximal degree in co-relation 2261. Up to 476 conditions per place. [2022-11-16 11:57:53,450 INFO L137 encePairwiseOnDemand]: 297/303 looper letters, 20 selfloop transitions, 8 changer transitions 0/268 dead transitions. [2022-11-16 11:57:53,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 268 transitions, 776 flow [2022-11-16 11:57:53,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:53,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:53,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1231 transitions. [2022-11-16 11:57:53,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8125412541254126 [2022-11-16 11:57:53,454 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1231 transitions. [2022-11-16 11:57:53,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1231 transitions. [2022-11-16 11:57:53,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:53,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1231 transitions. [2022-11-16 11:57:53,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 246.2) internal successors, (1231), 5 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:53,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 303.0) internal successors, (1818), 6 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:53,460 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 303.0) internal successors, (1818), 6 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:53,461 INFO L175 Difference]: Start difference. First operand has 286 places, 268 transitions, 722 flow. Second operand 5 states and 1231 transitions. [2022-11-16 11:57:53,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 268 transitions, 776 flow [2022-11-16 11:57:53,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 268 transitions, 774 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:57:53,468 INFO L231 Difference]: Finished difference. Result has 289 places, 268 transitions, 740 flow [2022-11-16 11:57:53,468 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=740, PETRI_PLACES=289, PETRI_TRANSITIONS=268} [2022-11-16 11:57:53,469 INFO L288 CegarLoopForPetriNet]: 279 programPoint places, 10 predicate places. [2022-11-16 11:57:53,469 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 268 transitions, 740 flow [2022-11-16 11:57:53,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 244.5) internal successors, (978), 4 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:53,470 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:53,470 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:53,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-16 11:57:53,470 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:53,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:53,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1601130546, now seen corresponding path program 1 times [2022-11-16 11:57:53,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:53,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839397233] [2022-11-16 11:57:53,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:53,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:53,609 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:57:53,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:53,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839397233] [2022-11-16 11:57:53,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839397233] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:53,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207028395] [2022-11-16 11:57:53,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:53,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:53,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:53,620 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:53,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 11:57:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:53,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:57:53,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:53,859 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:57:53,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:54,000 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:57:54,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207028395] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:54,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:57:54,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:57:54,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654798899] [2022-11-16 11:57:54,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:54,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:57:54,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:54,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:57:54,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:57:54,006 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 303 [2022-11-16 11:57:54,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 268 transitions, 740 flow. Second operand has 18 states, 18 states have (on average 243.38888888888889) internal successors, (4381), 18 states have internal predecessors, (4381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:54,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:54,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 303 [2022-11-16 11:57:54,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:54,800 INFO L130 PetriNetUnfolder]: 324/2084 cut-off events. [2022-11-16 11:57:54,800 INFO L131 PetriNetUnfolder]: For 1498/1498 co-relation queries the response was YES. [2022-11-16 11:57:54,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3198 conditions, 2084 events. 324/2084 cut-off events. For 1498/1498 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 14184 event pairs, 321 based on Foata normal form. 4/1817 useless extension candidates. Maximal degree in co-relation 2898. Up to 453 conditions per place. [2022-11-16 11:57:54,819 INFO L137 encePairwiseOnDemand]: 297/303 looper letters, 46 selfloop transitions, 21 changer transitions 0/303 dead transitions. [2022-11-16 11:57:54,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 303 transitions, 1028 flow [2022-11-16 11:57:54,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:57:54,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:57:54,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5111 transitions. [2022-11-16 11:57:54,827 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8032374666038032 [2022-11-16 11:57:54,827 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5111 transitions. [2022-11-16 11:57:54,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5111 transitions. [2022-11-16 11:57:54,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:54,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5111 transitions. [2022-11-16 11:57:54,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 243.38095238095238) internal successors, (5111), 21 states have internal predecessors, (5111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:54,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 303.0) internal successors, (6666), 22 states have internal predecessors, (6666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:54,844 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 303.0) internal successors, (6666), 22 states have internal predecessors, (6666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:54,844 INFO L175 Difference]: Start difference. First operand has 289 places, 268 transitions, 740 flow. Second operand 21 states and 5111 transitions. [2022-11-16 11:57:54,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 303 transitions, 1028 flow [2022-11-16 11:57:54,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 303 transitions, 1016 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:57:54,852 INFO L231 Difference]: Finished difference. Result has 311 places, 281 transitions, 884 flow [2022-11-16 11:57:54,852 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=884, PETRI_PLACES=311, PETRI_TRANSITIONS=281} [2022-11-16 11:57:54,853 INFO L288 CegarLoopForPetriNet]: 279 programPoint places, 32 predicate places. [2022-11-16 11:57:54,853 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 281 transitions, 884 flow [2022-11-16 11:57:54,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 243.38888888888889) internal successors, (4381), 18 states have internal predecessors, (4381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:54,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:54,854 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 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] [2022-11-16 11:57:54,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:55,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:55,063 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:55,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:55,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1959469925, now seen corresponding path program 1 times [2022-11-16 11:57:55,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:55,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450911091] [2022-11-16 11:57:55,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:55,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:55,098 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:57:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:55,141 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:57:55,142 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:57:55,142 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-16 11:57:55,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-11-16 11:57:55,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-11-16 11:57:55,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-11-16 11:57:55,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-11-16 11:57:55,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-11-16 11:57:55,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-11-16 11:57:55,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-11-16 11:57:55,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-11-16 11:57:55,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-11-16 11:57:55,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-11-16 11:57:55,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-16 11:57:55,144 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:55,145 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:57:55,146 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2022-11-16 11:57:55,180 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-16 11:57:55,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 326 transitions, 772 flow [2022-11-16 11:57:56,351 INFO L130 PetriNetUnfolder]: 1147/6611 cut-off events. [2022-11-16 11:57:56,351 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2022-11-16 11:57:56,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7696 conditions, 6611 events. 1147/6611 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 56023 event pairs, 522 based on Foata normal form. 0/5396 useless extension candidates. Maximal degree in co-relation 4104. Up to 1024 conditions per place. [2022-11-16 11:57:56,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 326 transitions, 772 flow [2022-11-16 11:57:56,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 300 places, 326 transitions, 772 flow [2022-11-16 11:57:56,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:57:56,480 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;@75fb332e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:57:56,480 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-16 11:57:56,484 INFO L130 PetriNetUnfolder]: 2/61 cut-off events. [2022-11-16 11:57:56,485 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:57:56,485 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:56,485 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:56,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:56,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:56,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1288623799, now seen corresponding path program 1 times [2022-11-16 11:57:56,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:56,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740598748] [2022-11-16 11:57:56,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:56,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:56,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:56,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:56,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740598748] [2022-11-16 11:57:56,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740598748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:56,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:56,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:56,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010482508] [2022-11-16 11:57:56,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:56,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:56,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:56,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:56,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:56,539 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 326 [2022-11-16 11:57:56,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 326 transitions, 772 flow. Second operand has 4 states, 4 states have (on average 258.75) internal successors, (1035), 4 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:56,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:56,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 326 [2022-11-16 11:57:56,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:58,035 INFO L130 PetriNetUnfolder]: 792/6183 cut-off events. [2022-11-16 11:57:58,035 INFO L131 PetriNetUnfolder]: For 3184/3184 co-relation queries the response was YES. [2022-11-16 11:57:58,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8383 conditions, 6183 events. 792/6183 cut-off events. For 3184/3184 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 54551 event pairs, 522 based on Foata normal form. 4386/9709 useless extension candidates. Maximal degree in co-relation 4404. Up to 1107 conditions per place. [2022-11-16 11:57:58,129 INFO L137 encePairwiseOnDemand]: 286/326 looper letters, 31 selfloop transitions, 4 changer transitions 7/292 dead transitions. [2022-11-16 11:57:58,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 292 transitions, 774 flow [2022-11-16 11:57:58,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:58,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:58,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1366 transitions. [2022-11-16 11:57:58,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.838036809815951 [2022-11-16 11:57:58,132 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1366 transitions. [2022-11-16 11:57:58,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1366 transitions. [2022-11-16 11:57:58,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:58,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1366 transitions. [2022-11-16 11:57:58,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 273.2) internal successors, (1366), 5 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:58,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 326.0) internal successors, (1956), 6 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:58,138 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 326.0) internal successors, (1956), 6 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:58,138 INFO L175 Difference]: Start difference. First operand has 300 places, 326 transitions, 772 flow. Second operand 5 states and 1366 transitions. [2022-11-16 11:57:58,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 292 transitions, 774 flow [2022-11-16 11:57:58,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 292 transitions, 774 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:57:58,145 INFO L231 Difference]: Finished difference. Result has 299 places, 281 transitions, 708 flow [2022-11-16 11:57:58,146 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=708, PETRI_PLACES=299, PETRI_TRANSITIONS=281} [2022-11-16 11:57:58,146 INFO L288 CegarLoopForPetriNet]: 300 programPoint places, -1 predicate places. [2022-11-16 11:57:58,146 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 281 transitions, 708 flow [2022-11-16 11:57:58,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 258.75) internal successors, (1035), 4 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:58,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:58,147 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:58,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-16 11:57:58,147 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:58,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:58,148 INFO L85 PathProgramCache]: Analyzing trace with hash 239112735, now seen corresponding path program 1 times [2022-11-16 11:57:58,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:58,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143286134] [2022-11-16 11:57:58,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:58,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:58,189 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:57:58,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:58,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143286134] [2022-11-16 11:57:58,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143286134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:58,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:58,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:58,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915137594] [2022-11-16 11:57:58,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:58,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:58,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:58,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:58,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:58,192 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 326 [2022-11-16 11:57:58,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 281 transitions, 708 flow. Second operand has 4 states, 4 states have (on average 260.75) internal successors, (1043), 4 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:58,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:58,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 326 [2022-11-16 11:57:58,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:59,335 INFO L130 PetriNetUnfolder]: 792/4384 cut-off events. [2022-11-16 11:57:59,335 INFO L131 PetriNetUnfolder]: For 3198/3198 co-relation queries the response was YES. [2022-11-16 11:57:59,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6624 conditions, 4384 events. 792/4384 cut-off events. For 3198/3198 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 34042 event pairs, 522 based on Foata normal form. 7/3809 useless extension candidates. Maximal degree in co-relation 6543. Up to 1042 conditions per place. [2022-11-16 11:57:59,396 INFO L137 encePairwiseOnDemand]: 320/326 looper letters, 23 selfloop transitions, 8 changer transitions 0/281 dead transitions. [2022-11-16 11:57:59,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 281 transitions, 768 flow [2022-11-16 11:57:59,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:59,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:59,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1314 transitions. [2022-11-16 11:57:59,398 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8061349693251534 [2022-11-16 11:57:59,398 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1314 transitions. [2022-11-16 11:57:59,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1314 transitions. [2022-11-16 11:57:59,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:59,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1314 transitions. [2022-11-16 11:57:59,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 262.8) internal successors, (1314), 5 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:59,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 326.0) internal successors, (1956), 6 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:59,404 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 326.0) internal successors, (1956), 6 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:59,404 INFO L175 Difference]: Start difference. First operand has 299 places, 281 transitions, 708 flow. Second operand 5 states and 1314 transitions. [2022-11-16 11:57:59,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 281 transitions, 768 flow [2022-11-16 11:57:59,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 281 transitions, 766 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:57:59,411 INFO L231 Difference]: Finished difference. Result has 295 places, 281 transitions, 726 flow [2022-11-16 11:57:59,412 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=726, PETRI_PLACES=295, PETRI_TRANSITIONS=281} [2022-11-16 11:57:59,412 INFO L288 CegarLoopForPetriNet]: 300 programPoint places, -5 predicate places. [2022-11-16 11:57:59,412 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 281 transitions, 726 flow [2022-11-16 11:57:59,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 260.75) internal successors, (1043), 4 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:59,413 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:59,413 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:59,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-16 11:57:59,413 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:57:59,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:59,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1177437685, now seen corresponding path program 1 times [2022-11-16 11:57:59,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:59,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038409905] [2022-11-16 11:57:59,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:59,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:59,479 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:59,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:59,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038409905] [2022-11-16 11:57:59,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038409905] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:59,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781138718] [2022-11-16 11:57:59,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:59,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:59,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:59,482 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:59,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 11:57:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:59,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:57:59,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:59,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:57:59,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781138718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:59,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:57:59,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 11:57:59,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364539397] [2022-11-16 11:57:59,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:59,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:57:59,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:59,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:57:59,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:57:59,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 326 [2022-11-16 11:57:59,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 281 transitions, 726 flow. Second operand has 5 states, 5 states have (on average 260.2) internal successors, (1301), 5 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:59,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:59,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 326 [2022-11-16 11:57:59,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:00,711 INFO L130 PetriNetUnfolder]: 792/4377 cut-off events. [2022-11-16 11:58:00,711 INFO L131 PetriNetUnfolder]: For 3231/3231 co-relation queries the response was YES. [2022-11-16 11:58:00,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6645 conditions, 4377 events. 792/4377 cut-off events. For 3231/3231 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 33974 event pairs, 522 based on Foata normal form. 7/3802 useless extension candidates. Maximal degree in co-relation 3554. Up to 1067 conditions per place. [2022-11-16 11:58:00,756 INFO L137 encePairwiseOnDemand]: 322/326 looper letters, 25 selfloop transitions, 5 changer transitions 0/280 dead transitions. [2022-11-16 11:58:00,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 280 transitions, 782 flow [2022-11-16 11:58:00,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:58:00,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:58:00,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1055 transitions. [2022-11-16 11:58:00,759 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8090490797546013 [2022-11-16 11:58:00,759 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1055 transitions. [2022-11-16 11:58:00,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1055 transitions. [2022-11-16 11:58:00,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:00,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1055 transitions. [2022-11-16 11:58:00,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 263.75) internal successors, (1055), 4 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:00,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 326.0) internal successors, (1630), 5 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:00,763 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 326.0) internal successors, (1630), 5 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:00,763 INFO L175 Difference]: Start difference. First operand has 295 places, 281 transitions, 726 flow. Second operand 4 states and 1055 transitions. [2022-11-16 11:58:00,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 280 transitions, 782 flow [2022-11-16 11:58:00,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 280 transitions, 770 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:58:00,771 INFO L231 Difference]: Finished difference. Result has 294 places, 280 transitions, 720 flow [2022-11-16 11:58:00,771 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=720, PETRI_PLACES=294, PETRI_TRANSITIONS=280} [2022-11-16 11:58:00,772 INFO L288 CegarLoopForPetriNet]: 300 programPoint places, -6 predicate places. [2022-11-16 11:58:00,772 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 280 transitions, 720 flow [2022-11-16 11:58:00,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 260.2) internal successors, (1301), 5 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:00,772 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:00,773 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] [2022-11-16 11:58:00,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 11:58:00,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-11-16 11:58:00,978 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:58:00,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:00,979 INFO L85 PathProgramCache]: Analyzing trace with hash -840025435, now seen corresponding path program 1 times [2022-11-16 11:58:00,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:00,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353110204] [2022-11-16 11:58:00,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:00,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:01,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:01,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353110204] [2022-11-16 11:58:01,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353110204] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:58:01,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785181715] [2022-11-16 11:58:01,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:01,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:01,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:01,074 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:58:01,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 11:58:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:01,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:58:01,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:58:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:01,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:58:01,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:01,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785181715] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:58:01,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:58:01,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:58:01,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047236208] [2022-11-16 11:58:01,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:58:01,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:58:01,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:01,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:58:01,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:58:01,293 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 326 [2022-11-16 11:58:01,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 280 transitions, 720 flow. Second operand has 10 states, 10 states have (on average 259.9) internal successors, (2599), 10 states have internal predecessors, (2599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:01,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:01,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 326 [2022-11-16 11:58:01,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:02,342 INFO L130 PetriNetUnfolder]: 786/4245 cut-off events. [2022-11-16 11:58:02,342 INFO L131 PetriNetUnfolder]: For 3240/3240 co-relation queries the response was YES. [2022-11-16 11:58:02,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6502 conditions, 4245 events. 786/4245 cut-off events. For 3240/3240 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 33142 event pairs, 526 based on Foata normal form. 2/3681 useless extension candidates. Maximal degree in co-relation 3410. Up to 1044 conditions per place. [2022-11-16 11:58:02,412 INFO L137 encePairwiseOnDemand]: 320/326 looper letters, 32 selfloop transitions, 9 changer transitions 0/291 dead transitions. [2022-11-16 11:58:02,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 291 transitions, 840 flow [2022-11-16 11:58:02,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:58:02,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:58:02,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2356 transitions. [2022-11-16 11:58:02,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8029993183367417 [2022-11-16 11:58:02,416 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2356 transitions. [2022-11-16 11:58:02,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2356 transitions. [2022-11-16 11:58:02,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:02,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2356 transitions. [2022-11-16 11:58:02,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 261.77777777777777) internal successors, (2356), 9 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:02,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 326.0) internal successors, (3260), 10 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:02,424 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 326.0) internal successors, (3260), 10 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:02,424 INFO L175 Difference]: Start difference. First operand has 294 places, 280 transitions, 720 flow. Second operand 9 states and 2356 transitions. [2022-11-16 11:58:02,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 291 transitions, 840 flow [2022-11-16 11:58:02,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 291 transitions, 826 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:58:02,432 INFO L231 Difference]: Finished difference. Result has 303 places, 284 transitions, 766 flow [2022-11-16 11:58:02,433 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=766, PETRI_PLACES=303, PETRI_TRANSITIONS=284} [2022-11-16 11:58:02,433 INFO L288 CegarLoopForPetriNet]: 300 programPoint places, 3 predicate places. [2022-11-16 11:58:02,434 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 284 transitions, 766 flow [2022-11-16 11:58:02,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 259.9) internal successors, (2599), 10 states have internal predecessors, (2599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:02,435 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:02,435 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:58:02,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 11:58:02,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:02,640 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:58:02,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:02,641 INFO L85 PathProgramCache]: Analyzing trace with hash 973005528, now seen corresponding path program 1 times [2022-11-16 11:58:02,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:02,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743774812] [2022-11-16 11:58:02,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:02,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 11:58:02,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:02,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743774812] [2022-11-16 11:58:02,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743774812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:02,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:02,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:58:02,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412088514] [2022-11-16 11:58:02,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:02,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:58:02,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:02,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:58:02,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:58:02,707 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 326 [2022-11-16 11:58:02,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 284 transitions, 766 flow. Second operand has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:02,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:02,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 326 [2022-11-16 11:58:02,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:03,731 INFO L130 PetriNetUnfolder]: 792/4575 cut-off events. [2022-11-16 11:58:03,731 INFO L131 PetriNetUnfolder]: For 3303/3303 co-relation queries the response was YES. [2022-11-16 11:58:03,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6914 conditions, 4575 events. 792/4575 cut-off events. For 3303/3303 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 36026 event pairs, 526 based on Foata normal form. 0/3979 useless extension candidates. Maximal degree in co-relation 3822. Up to 1099 conditions per place. [2022-11-16 11:58:03,806 INFO L137 encePairwiseOnDemand]: 319/326 looper letters, 29 selfloop transitions, 4 changer transitions 0/290 dead transitions. [2022-11-16 11:58:03,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 290 transitions, 844 flow [2022-11-16 11:58:03,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:58:03,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:58:03,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1326 transitions. [2022-11-16 11:58:03,809 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8134969325153374 [2022-11-16 11:58:03,809 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1326 transitions. [2022-11-16 11:58:03,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1326 transitions. [2022-11-16 11:58:03,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:03,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1326 transitions. [2022-11-16 11:58:03,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 265.2) internal successors, (1326), 5 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:03,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 326.0) internal successors, (1956), 6 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:03,814 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 326.0) internal successors, (1956), 6 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:03,814 INFO L175 Difference]: Start difference. First operand has 303 places, 284 transitions, 766 flow. Second operand 5 states and 1326 transitions. [2022-11-16 11:58:03,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 290 transitions, 844 flow [2022-11-16 11:58:03,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 290 transitions, 828 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 11:58:03,823 INFO L231 Difference]: Finished difference. Result has 306 places, 287 transitions, 782 flow [2022-11-16 11:58:03,824 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=782, PETRI_PLACES=306, PETRI_TRANSITIONS=287} [2022-11-16 11:58:03,824 INFO L288 CegarLoopForPetriNet]: 300 programPoint places, 6 predicate places. [2022-11-16 11:58:03,825 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 287 transitions, 782 flow [2022-11-16 11:58:03,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:03,825 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:03,825 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:03,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-16 11:58:03,826 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:58:03,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:03,826 INFO L85 PathProgramCache]: Analyzing trace with hash 501443203, now seen corresponding path program 1 times [2022-11-16 11:58:03,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:03,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436546755] [2022-11-16 11:58:03,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:03,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:03,878 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 11:58:03,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:03,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436546755] [2022-11-16 11:58:03,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436546755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:03,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:03,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:58:03,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323952752] [2022-11-16 11:58:03,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:03,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:58:03,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:03,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:58:03,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:58:03,883 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 326 [2022-11-16 11:58:03,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 287 transitions, 782 flow. Second operand has 4 states, 4 states have (on average 261.5) internal successors, (1046), 4 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:03,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:03,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 326 [2022-11-16 11:58:03,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:05,023 INFO L130 PetriNetUnfolder]: 792/4569 cut-off events. [2022-11-16 11:58:05,023 INFO L131 PetriNetUnfolder]: For 3329/3329 co-relation queries the response was YES. [2022-11-16 11:58:05,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6964 conditions, 4569 events. 792/4569 cut-off events. For 3329/3329 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 35952 event pairs, 526 based on Foata normal form. 6/3997 useless extension candidates. Maximal degree in co-relation 3870. Up to 1057 conditions per place. [2022-11-16 11:58:05,093 INFO L137 encePairwiseOnDemand]: 320/326 looper letters, 22 selfloop transitions, 8 changer transitions 0/287 dead transitions. [2022-11-16 11:58:05,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 287 transitions, 840 flow [2022-11-16 11:58:05,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:58:05,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:58:05,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1318 transitions. [2022-11-16 11:58:05,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8085889570552147 [2022-11-16 11:58:05,096 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1318 transitions. [2022-11-16 11:58:05,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1318 transitions. [2022-11-16 11:58:05,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:05,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1318 transitions. [2022-11-16 11:58:05,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 263.6) internal successors, (1318), 5 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:05,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 326.0) internal successors, (1956), 6 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:05,101 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 326.0) internal successors, (1956), 6 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:05,101 INFO L175 Difference]: Start difference. First operand has 306 places, 287 transitions, 782 flow. Second operand 5 states and 1318 transitions. [2022-11-16 11:58:05,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 287 transitions, 840 flow [2022-11-16 11:58:05,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 287 transitions, 838 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:58:05,110 INFO L231 Difference]: Finished difference. Result has 309 places, 287 transitions, 800 flow [2022-11-16 11:58:05,111 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=800, PETRI_PLACES=309, PETRI_TRANSITIONS=287} [2022-11-16 11:58:05,111 INFO L288 CegarLoopForPetriNet]: 300 programPoint places, 9 predicate places. [2022-11-16 11:58:05,111 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 287 transitions, 800 flow [2022-11-16 11:58:05,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.5) internal successors, (1046), 4 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:05,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:05,112 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:05,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-16 11:58:05,112 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:58:05,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:05,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1635127789, now seen corresponding path program 1 times [2022-11-16 11:58:05,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:05,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675883599] [2022-11-16 11:58:05,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:05,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:58:05,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:05,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675883599] [2022-11-16 11:58:05,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675883599] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:58:05,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107081889] [2022-11-16 11:58:05,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:05,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:05,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:05,265 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:58:05,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 11:58:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:05,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:58:05,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:58:05,517 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:58:05,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:58:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:58:05,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107081889] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:58:05,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:58:05,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:58:05,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587832419] [2022-11-16 11:58:05,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:58:05,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:58:05,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:05,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:58:05,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:58:05,646 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 326 [2022-11-16 11:58:05,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 287 transitions, 800 flow. Second operand has 18 states, 18 states have (on average 260.3888888888889) internal successors, (4687), 18 states have internal predecessors, (4687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:05,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:05,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 326 [2022-11-16 11:58:05,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:07,027 INFO L130 PetriNetUnfolder]: 776/4089 cut-off events. [2022-11-16 11:58:07,027 INFO L131 PetriNetUnfolder]: For 3282/3282 co-relation queries the response was YES. [2022-11-16 11:58:07,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6410 conditions, 4089 events. 776/4089 cut-off events. For 3282/3282 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 32573 event pairs, 642 based on Foata normal form. 4/3555 useless extension candidates. Maximal degree in co-relation 3312. Up to 1032 conditions per place. [2022-11-16 11:58:07,082 INFO L137 encePairwiseOnDemand]: 320/326 looper letters, 48 selfloop transitions, 21 changer transitions 0/322 dead transitions. [2022-11-16 11:58:07,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 322 transitions, 1092 flow [2022-11-16 11:58:07,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:58:07,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:58:07,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5470 transitions. [2022-11-16 11:58:07,091 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7990067192521181 [2022-11-16 11:58:07,091 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5470 transitions. [2022-11-16 11:58:07,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5470 transitions. [2022-11-16 11:58:07,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:07,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5470 transitions. [2022-11-16 11:58:07,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 260.4761904761905) internal successors, (5470), 21 states have internal predecessors, (5470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:07,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 326.0) internal successors, (7172), 22 states have internal predecessors, (7172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:07,112 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 326.0) internal successors, (7172), 22 states have internal predecessors, (7172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:07,113 INFO L175 Difference]: Start difference. First operand has 309 places, 287 transitions, 800 flow. Second operand 21 states and 5470 transitions. [2022-11-16 11:58:07,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 322 transitions, 1092 flow [2022-11-16 11:58:07,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 322 transitions, 1080 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:58:07,122 INFO L231 Difference]: Finished difference. Result has 331 places, 300 transitions, 944 flow [2022-11-16 11:58:07,123 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=944, PETRI_PLACES=331, PETRI_TRANSITIONS=300} [2022-11-16 11:58:07,123 INFO L288 CegarLoopForPetriNet]: 300 programPoint places, 31 predicate places. [2022-11-16 11:58:07,124 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 300 transitions, 944 flow [2022-11-16 11:58:07,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 260.3888888888889) internal successors, (4687), 18 states have internal predecessors, (4687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:07,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:07,125 INFO L209 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:07,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 11:58:07,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-11-16 11:58:07,330 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:58:07,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:07,331 INFO L85 PathProgramCache]: Analyzing trace with hash -612834459, now seen corresponding path program 1 times [2022-11-16 11:58:07,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:07,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556063520] [2022-11-16 11:58:07,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:07,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:58:07,363 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:58:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:58:07,404 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:58:07,405 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:58:07,405 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-16 11:58:07,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-11-16 11:58:07,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-11-16 11:58:07,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-11-16 11:58:07,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-11-16 11:58:07,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-11-16 11:58:07,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-11-16 11:58:07,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-11-16 11:58:07,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-11-16 11:58:07,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-11-16 11:58:07,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-11-16 11:58:07,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-16 11:58:07,408 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:07,408 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:58:07,408 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2022-11-16 11:58:07,451 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2022-11-16 11:58:07,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 349 transitions, 842 flow [2022-11-16 11:58:10,025 INFO L130 PetriNetUnfolder]: 2441/12608 cut-off events. [2022-11-16 11:58:10,025 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2022-11-16 11:58:10,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14985 conditions, 12608 events. 2441/12608 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 123636 event pairs, 1291 based on Foata normal form. 0/10347 useless extension candidates. Maximal degree in co-relation 7678. Up to 2304 conditions per place. [2022-11-16 11:58:10,256 INFO L82 GeneralOperation]: Start removeDead. Operand has 321 places, 349 transitions, 842 flow [2022-11-16 11:58:10,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 321 places, 349 transitions, 842 flow [2022-11-16 11:58:10,358 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:58:10,358 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;@75fb332e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:58:10,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-16 11:58:10,363 INFO L130 PetriNetUnfolder]: 2/61 cut-off events. [2022-11-16 11:58:10,363 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:58:10,363 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:10,364 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:10,364 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:58:10,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:10,364 INFO L85 PathProgramCache]: Analyzing trace with hash 999041147, now seen corresponding path program 1 times [2022-11-16 11:58:10,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:10,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557801380] [2022-11-16 11:58:10,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:10,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:10,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:10,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:10,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557801380] [2022-11-16 11:58:10,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557801380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:10,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:10,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:58:10,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013450581] [2022-11-16 11:58:10,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:10,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:58:10,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:10,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:58:10,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:58:10,410 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 349 [2022-11-16 11:58:10,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 349 transitions, 842 flow. Second operand has 4 states, 4 states have (on average 275.75) internal successors, (1103), 4 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:10,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:10,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 349 [2022-11-16 11:58:10,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:13,623 INFO L130 PetriNetUnfolder]: 1819/11912 cut-off events. [2022-11-16 11:58:13,623 INFO L131 PetriNetUnfolder]: For 7068/7068 co-relation queries the response was YES. [2022-11-16 11:58:13,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16695 conditions, 11912 events. 1819/11912 cut-off events. For 7068/7068 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 121084 event pairs, 1291 based on Foata normal form. 8762/19034 useless extension candidates. Maximal degree in co-relation 8427. Up to 2398 conditions per place. [2022-11-16 11:58:13,807 INFO L137 encePairwiseOnDemand]: 306/349 looper letters, 33 selfloop transitions, 4 changer transitions 7/311 dead transitions. [2022-11-16 11:58:13,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 311 transitions, 840 flow [2022-11-16 11:58:13,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:58:13,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:58:13,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1456 transitions. [2022-11-16 11:58:13,810 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8343839541547278 [2022-11-16 11:58:13,810 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1456 transitions. [2022-11-16 11:58:13,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1456 transitions. [2022-11-16 11:58:13,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:13,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1456 transitions. [2022-11-16 11:58:13,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.2) internal successors, (1456), 5 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:13,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:13,816 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:13,816 INFO L175 Difference]: Start difference. First operand has 321 places, 349 transitions, 842 flow. Second operand 5 states and 1456 transitions. [2022-11-16 11:58:13,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 311 transitions, 840 flow [2022-11-16 11:58:13,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 311 transitions, 840 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:58:13,828 INFO L231 Difference]: Finished difference. Result has 319 places, 300 transitions, 770 flow [2022-11-16 11:58:13,828 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=770, PETRI_PLACES=319, PETRI_TRANSITIONS=300} [2022-11-16 11:58:13,829 INFO L288 CegarLoopForPetriNet]: 321 programPoint places, -2 predicate places. [2022-11-16 11:58:13,829 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 300 transitions, 770 flow [2022-11-16 11:58:13,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 275.75) internal successors, (1103), 4 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:13,830 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:13,830 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:13,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-16 11:58:13,831 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:58:13,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:13,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1082969690, now seen corresponding path program 1 times [2022-11-16 11:58:13,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:13,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169178413] [2022-11-16 11:58:13,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:13,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:58:13,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:13,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169178413] [2022-11-16 11:58:13,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169178413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:13,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:13,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:58:13,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704725008] [2022-11-16 11:58:13,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:13,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:58:13,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:13,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:58:13,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:58:13,890 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 349 [2022-11-16 11:58:13,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 300 transitions, 770 flow. Second operand has 4 states, 4 states have (on average 277.75) internal successors, (1111), 4 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:13,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:13,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 349 [2022-11-16 11:58:13,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:16,327 INFO L130 PetriNetUnfolder]: 1819/8320 cut-off events. [2022-11-16 11:58:16,328 INFO L131 PetriNetUnfolder]: For 7083/7083 co-relation queries the response was YES. [2022-11-16 11:58:16,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13147 conditions, 8320 events. 1819/8320 cut-off events. For 7083/7083 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 73887 event pairs, 1291 based on Foata normal form. 8/7225 useless extension candidates. Maximal degree in co-relation 13065. Up to 2324 conditions per place. [2022-11-16 11:58:16,434 INFO L137 encePairwiseOnDemand]: 343/349 looper letters, 25 selfloop transitions, 8 changer transitions 0/300 dead transitions. [2022-11-16 11:58:16,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 300 transitions, 834 flow [2022-11-16 11:58:16,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:58:16,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:58:16,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1401 transitions. [2022-11-16 11:58:16,436 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.802865329512894 [2022-11-16 11:58:16,436 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1401 transitions. [2022-11-16 11:58:16,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1401 transitions. [2022-11-16 11:58:16,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:16,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1401 transitions. [2022-11-16 11:58:16,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 280.2) internal successors, (1401), 5 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:16,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:16,440 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:16,440 INFO L175 Difference]: Start difference. First operand has 319 places, 300 transitions, 770 flow. Second operand 5 states and 1401 transitions. [2022-11-16 11:58:16,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 300 transitions, 834 flow [2022-11-16 11:58:16,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 300 transitions, 832 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:58:16,449 INFO L231 Difference]: Finished difference. Result has 315 places, 300 transitions, 788 flow [2022-11-16 11:58:16,450 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=788, PETRI_PLACES=315, PETRI_TRANSITIONS=300} [2022-11-16 11:58:16,450 INFO L288 CegarLoopForPetriNet]: 321 programPoint places, -6 predicate places. [2022-11-16 11:58:16,450 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 300 transitions, 788 flow [2022-11-16 11:58:16,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.75) internal successors, (1111), 4 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:16,451 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:16,451 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:16,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-16 11:58:16,452 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:58:16,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:16,452 INFO L85 PathProgramCache]: Analyzing trace with hash 787680449, now seen corresponding path program 1 times [2022-11-16 11:58:16,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:16,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765545982] [2022-11-16 11:58:16,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:16,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:16,517 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:16,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:16,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765545982] [2022-11-16 11:58:16,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765545982] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:58:16,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501798224] [2022-11-16 11:58:16,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:16,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:16,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:16,523 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:58:16,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 11:58:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:16,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:58:16,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:58:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:16,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:58:16,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501798224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:16,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:58:16,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 11:58:16,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293065662] [2022-11-16 11:58:16,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:16,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:58:16,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:16,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:58:16,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:58:16,767 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 349 [2022-11-16 11:58:16,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 300 transitions, 788 flow. Second operand has 5 states, 5 states have (on average 277.2) internal successors, (1386), 5 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:16,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:16,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 349 [2022-11-16 11:58:16,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:19,092 INFO L130 PetriNetUnfolder]: 1819/8312 cut-off events. [2022-11-16 11:58:19,092 INFO L131 PetriNetUnfolder]: For 7120/7120 co-relation queries the response was YES. [2022-11-16 11:58:19,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13170 conditions, 8312 events. 1819/8312 cut-off events. For 7120/7120 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 73801 event pairs, 1291 based on Foata normal form. 8/7217 useless extension candidates. Maximal degree in co-relation 6686. Up to 2352 conditions per place. [2022-11-16 11:58:19,222 INFO L137 encePairwiseOnDemand]: 345/349 looper letters, 27 selfloop transitions, 5 changer transitions 0/299 dead transitions. [2022-11-16 11:58:19,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 299 transitions, 848 flow [2022-11-16 11:58:19,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:58:19,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:58:19,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1125 transitions. [2022-11-16 11:58:19,225 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8058739255014327 [2022-11-16 11:58:19,225 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1125 transitions. [2022-11-16 11:58:19,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1125 transitions. [2022-11-16 11:58:19,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:19,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1125 transitions. [2022-11-16 11:58:19,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 281.25) internal successors, (1125), 4 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:19,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:19,229 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:19,229 INFO L175 Difference]: Start difference. First operand has 315 places, 300 transitions, 788 flow. Second operand 4 states and 1125 transitions. [2022-11-16 11:58:19,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 299 transitions, 848 flow [2022-11-16 11:58:19,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 299 transitions, 836 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:58:19,236 INFO L231 Difference]: Finished difference. Result has 314 places, 299 transitions, 782 flow [2022-11-16 11:58:19,237 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=782, PETRI_PLACES=314, PETRI_TRANSITIONS=299} [2022-11-16 11:58:19,237 INFO L288 CegarLoopForPetriNet]: 321 programPoint places, -7 predicate places. [2022-11-16 11:58:19,238 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 299 transitions, 782 flow [2022-11-16 11:58:19,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 277.2) internal successors, (1386), 5 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:19,238 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:19,238 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] [2022-11-16 11:58:19,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 11:58:19,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-11-16 11:58:19,439 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:58:19,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:19,440 INFO L85 PathProgramCache]: Analyzing trace with hash -91409104, now seen corresponding path program 1 times [2022-11-16 11:58:19,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:19,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755874311] [2022-11-16 11:58:19,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:19,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:19,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:19,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755874311] [2022-11-16 11:58:19,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755874311] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:58:19,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181154032] [2022-11-16 11:58:19,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:19,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:19,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:19,624 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:58:19,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 11:58:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:19,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:58:19,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:58:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:19,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:58:19,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:19,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181154032] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:58:19,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:58:19,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:58:19,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234118770] [2022-11-16 11:58:19,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:58:19,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:58:19,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:19,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:58:19,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:58:19,884 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 349 [2022-11-16 11:58:19,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 299 transitions, 782 flow. Second operand has 10 states, 10 states have (on average 276.9) internal successors, (2769), 10 states have internal predecessors, (2769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:19,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:19,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 349 [2022-11-16 11:58:19,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:22,272 INFO L130 PetriNetUnfolder]: 1813/8180 cut-off events. [2022-11-16 11:58:22,272 INFO L131 PetriNetUnfolder]: For 7130/7130 co-relation queries the response was YES. [2022-11-16 11:58:22,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13026 conditions, 8180 events. 1813/8180 cut-off events. For 7130/7130 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 72875 event pairs, 1295 based on Foata normal form. 2/7095 useless extension candidates. Maximal degree in co-relation 6643. Up to 2327 conditions per place. [2022-11-16 11:58:22,375 INFO L137 encePairwiseOnDemand]: 343/349 looper letters, 34 selfloop transitions, 9 changer transitions 0/310 dead transitions. [2022-11-16 11:58:22,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 310 transitions, 906 flow [2022-11-16 11:58:22,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:58:22,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:58:22,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2511 transitions. [2022-11-16 11:58:22,378 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7994269340974212 [2022-11-16 11:58:22,378 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2511 transitions. [2022-11-16 11:58:22,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2511 transitions. [2022-11-16 11:58:22,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:22,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2511 transitions. [2022-11-16 11:58:22,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 279.0) internal successors, (2511), 9 states have internal predecessors, (2511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:22,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 349.0) internal successors, (3490), 10 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:22,382 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 349.0) internal successors, (3490), 10 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:22,382 INFO L175 Difference]: Start difference. First operand has 314 places, 299 transitions, 782 flow. Second operand 9 states and 2511 transitions. [2022-11-16 11:58:22,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 310 transitions, 906 flow [2022-11-16 11:58:22,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 310 transitions, 892 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:58:22,390 INFO L231 Difference]: Finished difference. Result has 323 places, 303 transitions, 828 flow [2022-11-16 11:58:22,390 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=828, PETRI_PLACES=323, PETRI_TRANSITIONS=303} [2022-11-16 11:58:22,391 INFO L288 CegarLoopForPetriNet]: 321 programPoint places, 2 predicate places. [2022-11-16 11:58:22,391 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 303 transitions, 828 flow [2022-11-16 11:58:22,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 276.9) internal successors, (2769), 10 states have internal predecessors, (2769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:22,392 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:22,392 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:58:22,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-16 11:58:22,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:22,597 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:58:22,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:22,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1204599545, now seen corresponding path program 1 times [2022-11-16 11:58:22,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:22,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343314189] [2022-11-16 11:58:22,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:22,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:22,652 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 11:58:22,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:22,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343314189] [2022-11-16 11:58:22,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343314189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:22,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:22,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:58:22,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183838478] [2022-11-16 11:58:22,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:22,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:58:22,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:22,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:58:22,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:58:22,655 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 349 [2022-11-16 11:58:22,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 303 transitions, 828 flow. Second operand has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:22,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:22,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 349 [2022-11-16 11:58:22,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:24,916 INFO L130 PetriNetUnfolder]: 1820/8565 cut-off events. [2022-11-16 11:58:24,917 INFO L131 PetriNetUnfolder]: For 7207/7207 co-relation queries the response was YES. [2022-11-16 11:58:24,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13508 conditions, 8565 events. 1820/8565 cut-off events. For 7207/7207 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 76506 event pairs, 1295 based on Foata normal form. 0/7443 useless extension candidates. Maximal degree in co-relation 7023. Up to 2391 conditions per place. [2022-11-16 11:58:25,031 INFO L137 encePairwiseOnDemand]: 342/349 looper letters, 31 selfloop transitions, 4 changer transitions 0/309 dead transitions. [2022-11-16 11:58:25,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 309 transitions, 910 flow [2022-11-16 11:58:25,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:58:25,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:58:25,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1413 transitions. [2022-11-16 11:58:25,034 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8097421203438395 [2022-11-16 11:58:25,034 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1413 transitions. [2022-11-16 11:58:25,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1413 transitions. [2022-11-16 11:58:25,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:25,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1413 transitions. [2022-11-16 11:58:25,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:25,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:25,039 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:25,039 INFO L175 Difference]: Start difference. First operand has 323 places, 303 transitions, 828 flow. Second operand 5 states and 1413 transitions. [2022-11-16 11:58:25,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 309 transitions, 910 flow [2022-11-16 11:58:25,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 309 transitions, 894 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 11:58:25,048 INFO L231 Difference]: Finished difference. Result has 326 places, 306 transitions, 844 flow [2022-11-16 11:58:25,049 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=844, PETRI_PLACES=326, PETRI_TRANSITIONS=306} [2022-11-16 11:58:25,049 INFO L288 CegarLoopForPetriNet]: 321 programPoint places, 5 predicate places. [2022-11-16 11:58:25,050 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 306 transitions, 844 flow [2022-11-16 11:58:25,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:25,050 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:25,050 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:25,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-16 11:58:25,051 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:58:25,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:25,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2734687, now seen corresponding path program 1 times [2022-11-16 11:58:25,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:25,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407817952] [2022-11-16 11:58:25,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:25,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:25,108 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 11:58:25,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:25,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407817952] [2022-11-16 11:58:25,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407817952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:25,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:25,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:58:25,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554768229] [2022-11-16 11:58:25,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:25,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:58:25,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:25,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:58:25,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:58:25,112 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 349 [2022-11-16 11:58:25,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 306 transitions, 844 flow. Second operand has 4 states, 4 states have (on average 278.5) internal successors, (1114), 4 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:25,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:25,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 349 [2022-11-16 11:58:25,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:27,557 INFO L130 PetriNetUnfolder]: 1820/8558 cut-off events. [2022-11-16 11:58:27,557 INFO L131 PetriNetUnfolder]: For 7239/7239 co-relation queries the response was YES. [2022-11-16 11:58:27,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13567 conditions, 8558 events. 1820/8558 cut-off events. For 7239/7239 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 76267 event pairs, 1295 based on Foata normal form. 7/7464 useless extension candidates. Maximal degree in co-relation 7080. Up to 2342 conditions per place. [2022-11-16 11:58:27,668 INFO L137 encePairwiseOnDemand]: 343/349 looper letters, 24 selfloop transitions, 8 changer transitions 0/306 dead transitions. [2022-11-16 11:58:27,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 306 transitions, 906 flow [2022-11-16 11:58:27,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:58:27,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:58:27,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1405 transitions. [2022-11-16 11:58:27,670 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8051575931232091 [2022-11-16 11:58:27,670 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1405 transitions. [2022-11-16 11:58:27,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1405 transitions. [2022-11-16 11:58:27,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:27,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1405 transitions. [2022-11-16 11:58:27,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:27,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:27,674 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:27,674 INFO L175 Difference]: Start difference. First operand has 326 places, 306 transitions, 844 flow. Second operand 5 states and 1405 transitions. [2022-11-16 11:58:27,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 306 transitions, 906 flow [2022-11-16 11:58:27,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 306 transitions, 904 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:58:27,684 INFO L231 Difference]: Finished difference. Result has 329 places, 306 transitions, 862 flow [2022-11-16 11:58:27,685 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=862, PETRI_PLACES=329, PETRI_TRANSITIONS=306} [2022-11-16 11:58:27,685 INFO L288 CegarLoopForPetriNet]: 321 programPoint places, 8 predicate places. [2022-11-16 11:58:27,686 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 306 transitions, 862 flow [2022-11-16 11:58:27,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.5) internal successors, (1114), 4 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:27,686 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:27,686 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:27,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-16 11:58:27,687 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:58:27,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:27,687 INFO L85 PathProgramCache]: Analyzing trace with hash 84777748, now seen corresponding path program 1 times [2022-11-16 11:58:27,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:27,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194240353] [2022-11-16 11:58:27,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:27,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:58:27,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:27,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194240353] [2022-11-16 11:58:27,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194240353] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:58:27,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685402342] [2022-11-16 11:58:27,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:27,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:27,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:27,815 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:58:27,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 11:58:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:27,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:58:27,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:58:28,070 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:58:28,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:58:28,196 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:58:28,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685402342] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:58:28,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:58:28,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:58:28,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985039221] [2022-11-16 11:58:28,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:58:28,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:58:28,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:28,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:58:28,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:58:28,202 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 349 [2022-11-16 11:58:28,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 306 transitions, 862 flow. Second operand has 18 states, 18 states have (on average 277.3888888888889) internal successors, (4993), 18 states have internal predecessors, (4993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:28,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:28,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 349 [2022-11-16 11:58:28,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:30,675 INFO L130 PetriNetUnfolder]: 1804/8078 cut-off events. [2022-11-16 11:58:30,675 INFO L131 PetriNetUnfolder]: For 7187/7187 co-relation queries the response was YES. [2022-11-16 11:58:30,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13015 conditions, 8078 events. 1804/8078 cut-off events. For 7187/7187 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 74892 event pairs, 1411 based on Foata normal form. 4/7021 useless extension candidates. Maximal degree in co-relation 6718. Up to 2315 conditions per place. [2022-11-16 11:58:30,807 INFO L137 encePairwiseOnDemand]: 343/349 looper letters, 50 selfloop transitions, 21 changer transitions 0/341 dead transitions. [2022-11-16 11:58:30,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 341 transitions, 1158 flow [2022-11-16 11:58:30,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:58:30,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:58:30,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5829 transitions. [2022-11-16 11:58:30,814 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7953336062218583 [2022-11-16 11:58:30,814 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5829 transitions. [2022-11-16 11:58:30,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5829 transitions. [2022-11-16 11:58:30,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:30,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5829 transitions. [2022-11-16 11:58:30,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 277.57142857142856) internal successors, (5829), 21 states have internal predecessors, (5829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:30,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 349.0) internal successors, (7678), 22 states have internal predecessors, (7678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:30,829 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 349.0) internal successors, (7678), 22 states have internal predecessors, (7678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:30,830 INFO L175 Difference]: Start difference. First operand has 329 places, 306 transitions, 862 flow. Second operand 21 states and 5829 transitions. [2022-11-16 11:58:30,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 341 transitions, 1158 flow [2022-11-16 11:58:30,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 341 transitions, 1146 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:58:30,841 INFO L231 Difference]: Finished difference. Result has 351 places, 319 transitions, 1006 flow [2022-11-16 11:58:30,842 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1006, PETRI_PLACES=351, PETRI_TRANSITIONS=319} [2022-11-16 11:58:30,842 INFO L288 CegarLoopForPetriNet]: 321 programPoint places, 30 predicate places. [2022-11-16 11:58:30,842 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 319 transitions, 1006 flow [2022-11-16 11:58:30,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 277.3888888888889) internal successors, (4993), 18 states have internal predecessors, (4993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:30,844 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:30,844 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:30,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-16 11:58:31,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:31,049 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:58:31,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:31,049 INFO L85 PathProgramCache]: Analyzing trace with hash -908785766, now seen corresponding path program 1 times [2022-11-16 11:58:31,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:31,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468701638] [2022-11-16 11:58:31,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:31,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:31,558 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 259 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:58:31,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:31,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468701638] [2022-11-16 11:58:31,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468701638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:58:31,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15626204] [2022-11-16 11:58:31,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:31,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:31,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:31,563 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:58:31,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 11:58:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:31,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:58:31,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:58:31,932 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 259 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:58:31,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:58:32,299 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 259 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:58:32,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15626204] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:58:32,300 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:58:32,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-11-16 11:58:32,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430010367] [2022-11-16 11:58:32,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:58:32,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 11:58:32,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:32,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 11:58:32,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 11:58:32,308 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 349 [2022-11-16 11:58:32,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 319 transitions, 1006 flow. Second operand has 34 states, 34 states have (on average 277.6764705882353) internal successors, (9441), 34 states have internal predecessors, (9441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:32,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:32,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 349 [2022-11-16 11:58:32,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:32,759 INFO L130 PetriNetUnfolder]: 0/302 cut-off events. [2022-11-16 11:58:32,760 INFO L131 PetriNetUnfolder]: For 369/369 co-relation queries the response was YES. [2022-11-16 11:58:32,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 302 events. 0/302 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 380 event pairs, 0 based on Foata normal form. 3/296 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2022-11-16 11:58:32,761 INFO L137 encePairwiseOnDemand]: 344/349 looper letters, 48 selfloop transitions, 28 changer transitions 0/268 dead transitions. [2022-11-16 11:58:32,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 268 transitions, 1075 flow [2022-11-16 11:58:32,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:58:32,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:58:32,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 8299 transitions. [2022-11-16 11:58:32,769 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7926456542502388 [2022-11-16 11:58:32,769 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 8299 transitions. [2022-11-16 11:58:32,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 8299 transitions. [2022-11-16 11:58:32,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:32,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 8299 transitions. [2022-11-16 11:58:32,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 276.6333333333333) internal successors, (8299), 30 states have internal predecessors, (8299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:32,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 349.0) internal successors, (10819), 31 states have internal predecessors, (10819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:32,789 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 349.0) internal successors, (10819), 31 states have internal predecessors, (10819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:32,789 INFO L175 Difference]: Start difference. First operand has 351 places, 319 transitions, 1006 flow. Second operand 30 states and 8299 transitions. [2022-11-16 11:58:32,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 268 transitions, 1075 flow [2022-11-16 11:58:32,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 268 transitions, 899 flow, removed 64 selfloop flow, removed 15 redundant places. [2022-11-16 11:58:32,796 INFO L231 Difference]: Finished difference. Result has 288 places, 237 transitions, 700 flow [2022-11-16 11:58:32,796 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=700, PETRI_PLACES=288, PETRI_TRANSITIONS=237} [2022-11-16 11:58:32,797 INFO L288 CegarLoopForPetriNet]: 321 programPoint places, -33 predicate places. [2022-11-16 11:58:32,797 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 237 transitions, 700 flow [2022-11-16 11:58:32,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 277.6764705882353) internal successors, (9441), 34 states have internal predecessors, (9441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:32,799 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:32,799 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:32,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-16 11:58:33,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-11-16 11:58:33,005 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:58:33,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:33,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1092782513, now seen corresponding path program 1 times [2022-11-16 11:58:33,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:33,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072795200] [2022-11-16 11:58:33,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:33,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:58:33,029 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:58:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:58:33,080 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:58:33,080 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:58:33,080 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-16 11:58:33,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-11-16 11:58:33,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-11-16 11:58:33,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-11-16 11:58:33,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-11-16 11:58:33,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-11-16 11:58:33,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-11-16 11:58:33,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-11-16 11:58:33,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-11-16 11:58:33,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-11-16 11:58:33,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-11-16 11:58:33,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-16 11:58:33,083 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:33,083 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:58:33,083 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2022-11-16 11:58:33,116 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2022-11-16 11:58:33,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 372 transitions, 914 flow [2022-11-16 11:58:39,271 INFO L130 PetriNetUnfolder]: 5271/24749 cut-off events. [2022-11-16 11:58:39,271 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2022-11-16 11:58:39,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29955 conditions, 24749 events. 5271/24749 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 276645 event pairs, 3084 based on Foata normal form. 0/20418 useless extension candidates. Maximal degree in co-relation 14965. Up to 5120 conditions per place. [2022-11-16 11:58:39,815 INFO L82 GeneralOperation]: Start removeDead. Operand has 342 places, 372 transitions, 914 flow [2022-11-16 11:58:40,004 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 342 places, 372 transitions, 914 flow [2022-11-16 11:58:40,005 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:58:40,005 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;@75fb332e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:58:40,005 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-16 11:58:40,008 INFO L130 PetriNetUnfolder]: 2/61 cut-off events. [2022-11-16 11:58:40,008 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:58:40,009 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:40,009 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:40,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:58:40,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:40,009 INFO L85 PathProgramCache]: Analyzing trace with hash 88823940, now seen corresponding path program 1 times [2022-11-16 11:58:40,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:40,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430005999] [2022-11-16 11:58:40,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:40,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:40,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:40,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430005999] [2022-11-16 11:58:40,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430005999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:40,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:40,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:58:40,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392784883] [2022-11-16 11:58:40,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:40,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:58:40,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:40,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:58:40,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:58:40,048 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 372 [2022-11-16 11:58:40,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 372 transitions, 914 flow. Second operand has 4 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:40,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:40,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 372 [2022-11-16 11:58:40,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:46,724 INFO L130 PetriNetUnfolder]: 4126/23529 cut-off events. [2022-11-16 11:58:46,724 INFO L131 PetriNetUnfolder]: For 15570/15570 co-relation queries the response was YES. [2022-11-16 11:58:47,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33968 conditions, 23529 events. 4126/23529 cut-off events. For 15570/15570 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 269930 event pairs, 3084 based on Foata normal form. 18035/38376 useless extension candidates. Maximal degree in co-relation 16739. Up to 5225 conditions per place. [2022-11-16 11:58:47,200 INFO L137 encePairwiseOnDemand]: 326/372 looper letters, 35 selfloop transitions, 4 changer transitions 7/330 dead transitions. [2022-11-16 11:58:47,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 330 transitions, 908 flow [2022-11-16 11:58:47,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:58:47,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:58:47,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1546 transitions. [2022-11-16 11:58:47,202 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8311827956989247 [2022-11-16 11:58:47,202 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1546 transitions. [2022-11-16 11:58:47,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1546 transitions. [2022-11-16 11:58:47,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:47,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1546 transitions. [2022-11-16 11:58:47,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 309.2) internal successors, (1546), 5 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:47,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:47,206 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:47,207 INFO L175 Difference]: Start difference. First operand has 342 places, 372 transitions, 914 flow. Second operand 5 states and 1546 transitions. [2022-11-16 11:58:47,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 330 transitions, 908 flow [2022-11-16 11:58:47,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 330 transitions, 908 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:58:47,215 INFO L231 Difference]: Finished difference. Result has 339 places, 319 transitions, 834 flow [2022-11-16 11:58:47,216 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=834, PETRI_PLACES=339, PETRI_TRANSITIONS=319} [2022-11-16 11:58:47,216 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, -3 predicate places. [2022-11-16 11:58:47,216 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 319 transitions, 834 flow [2022-11-16 11:58:47,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:47,217 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:47,217 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:47,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-16 11:58:47,217 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:58:47,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:47,218 INFO L85 PathProgramCache]: Analyzing trace with hash 839270596, now seen corresponding path program 1 times [2022-11-16 11:58:47,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:47,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177229215] [2022-11-16 11:58:47,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:47,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:58:47,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:47,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177229215] [2022-11-16 11:58:47,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177229215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:47,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:47,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:58:47,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086753324] [2022-11-16 11:58:47,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:47,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:58:47,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:47,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:58:47,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:58:47,255 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 372 [2022-11-16 11:58:47,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 319 transitions, 834 flow. Second operand has 4 states, 4 states have (on average 294.75) internal successors, (1179), 4 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:47,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:47,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 372 [2022-11-16 11:58:47,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:52,061 INFO L130 PetriNetUnfolder]: 4126/16352 cut-off events. [2022-11-16 11:58:52,061 INFO L131 PetriNetUnfolder]: For 15586/15586 co-relation queries the response was YES. [2022-11-16 11:58:52,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26839 conditions, 16352 events. 4126/16352 cut-off events. For 15586/15586 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 162637 event pairs, 3084 based on Foata normal form. 9/14225 useless extension candidates. Maximal degree in co-relation 26756. Up to 5142 conditions per place. [2022-11-16 11:58:52,414 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 27 selfloop transitions, 8 changer transitions 0/319 dead transitions. [2022-11-16 11:58:52,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 319 transitions, 902 flow [2022-11-16 11:58:52,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:58:52,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:58:52,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1488 transitions. [2022-11-16 11:58:52,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8 [2022-11-16 11:58:52,416 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1488 transitions. [2022-11-16 11:58:52,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1488 transitions. [2022-11-16 11:58:52,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:52,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1488 transitions. [2022-11-16 11:58:52,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.6) internal successors, (1488), 5 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:52,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:52,420 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:52,421 INFO L175 Difference]: Start difference. First operand has 339 places, 319 transitions, 834 flow. Second operand 5 states and 1488 transitions. [2022-11-16 11:58:52,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 319 transitions, 902 flow [2022-11-16 11:58:52,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 319 transitions, 900 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:58:52,438 INFO L231 Difference]: Finished difference. Result has 335 places, 319 transitions, 852 flow [2022-11-16 11:58:52,439 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=852, PETRI_PLACES=335, PETRI_TRANSITIONS=319} [2022-11-16 11:58:52,439 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, -7 predicate places. [2022-11-16 11:58:52,440 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 319 transitions, 852 flow [2022-11-16 11:58:52,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 294.75) internal successors, (1179), 4 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:52,440 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:52,440 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:52,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-16 11:58:52,441 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-16 11:58:52,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:52,441 INFO L85 PathProgramCache]: Analyzing trace with hash 247587543, now seen corresponding path program 1 times [2022-11-16 11:58:52,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:52,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181865219] [2022-11-16 11:58:52,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:52,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:52,498 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:52,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:52,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181865219] [2022-11-16 11:58:52,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181865219] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:58:52,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998178581] [2022-11-16 11:58:52,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:52,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:52,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:52,503 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:58:52,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d0014b8-da12-48ea-bf98-4c3f0e47538f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-16 11:58:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:52,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:58:52,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:58:52,730 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:52,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:58:52,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998178581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:52,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:58:52,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 11:58:52,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260083484] [2022-11-16 11:58:52,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:52,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:58:52,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:52,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:58:52,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:58:52,733 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 372 [2022-11-16 11:58:52,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 319 transitions, 852 flow. Second operand has 5 states, 5 states have (on average 294.2) internal successors, (1471), 5 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:52,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:52,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 372 [2022-11-16 11:58:52,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand