./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/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_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/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_5e2da34a-75e4-4c03-a847-fe36fce4dd44/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 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 --- 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 11:40:21,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:40:21,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:40:21,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:40:21,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:40:21,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:40:21,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:40:21,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:40:21,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:40:21,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:40:21,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:40:21,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:40:21,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:40:21,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:40:21,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:40:21,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:40:21,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:40:21,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:40:21,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:40:21,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:40:21,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:40:21,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:40:21,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:40:21,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:40:21,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:40:21,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:40:21,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:40:21,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:40:21,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:40:21,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:40:21,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:40:21,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:40:21,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:40:21,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:40:21,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:40:21,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:40:21,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:40:21,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:40:21,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:40:21,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:40:21,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:40:21,138 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:40:21,177 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:40:21,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:40:21,178 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:40:21,179 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:40:21,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:40:21,180 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:40:21,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:40:21,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:40:21,181 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:40:21,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:40:21,183 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:40:21,183 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:40:21,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:40:21,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:40:21,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:40:21,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:40:21,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:40:21,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:40:21,185 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:40:21,185 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:40:21,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:40:21,185 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:40:21,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:40:21,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:40:21,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:40:21,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:40:21,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:40:21,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:40:21,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:40:21,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:40:21,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:40:21,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:40:21,188 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:40:21,188 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:40:21,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:40:21,189 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_5e2da34a-75e4-4c03-a847-fe36fce4dd44/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 [2022-11-16 11:40:21,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:40:21,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:40:21,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:40:21,594 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:40:21,595 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:40:21,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2022-11-16 11:40:21,679 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/data/9439b869a/b818202812084bcca86280a536625245/FLAG1290089a2 [2022-11-16 11:40:22,129 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:40:22,130 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2022-11-16 11:40:22,138 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/data/9439b869a/b818202812084bcca86280a536625245/FLAG1290089a2 [2022-11-16 11:40:22,529 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/data/9439b869a/b818202812084bcca86280a536625245 [2022-11-16 11:40:22,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:40:22,533 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:40:22,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:40:22,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:40:22,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:40:22,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:40:22" (1/1) ... [2022-11-16 11:40:22,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e51dffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:22, skipping insertion in model container [2022-11-16 11:40:22,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:40:22" (1/1) ... [2022-11-16 11:40:22,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:40:22,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:40:22,881 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_5e2da34a-75e4-4c03-a847-fe36fce4dd44/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c[3412,3425] [2022-11-16 11:40:22,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:40:22,911 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:40:22,963 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_5e2da34a-75e4-4c03-a847-fe36fce4dd44/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c[3412,3425] [2022-11-16 11:40:22,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:40:22,994 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:40:22,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:22 WrapperNode [2022-11-16 11:40:22,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:40:22,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:40:22,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:40:22,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:40:23,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:22" (1/1) ... [2022-11-16 11:40:23,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:22" (1/1) ... [2022-11-16 11:40:23,070 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 265 [2022-11-16 11:40:23,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:40:23,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:40:23,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:40:23,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:40:23,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:22" (1/1) ... [2022-11-16 11:40:23,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:22" (1/1) ... [2022-11-16 11:40:23,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:22" (1/1) ... [2022-11-16 11:40:23,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:22" (1/1) ... [2022-11-16 11:40:23,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:22" (1/1) ... [2022-11-16 11:40:23,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:22" (1/1) ... [2022-11-16 11:40:23,132 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:22" (1/1) ... [2022-11-16 11:40:23,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:22" (1/1) ... [2022-11-16 11:40:23,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:40:23,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:40:23,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:40:23,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:40:23,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:22" (1/1) ... [2022-11-16 11:40:23,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:40:23,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:23,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:40:23,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:40:23,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:40:23,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:40:23,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:40:23,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:40:23,232 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:40:23,232 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:40:23,232 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:40:23,232 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:40:23,232 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:40:23,232 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:40:23,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:40:23,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:40:23,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:40:23,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:40:23,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:40:23,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:40:23,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:40:23,235 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 11:40:23,346 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:40:23,351 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:40:23,954 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:40:24,220 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:40:24,220 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-16 11:40:24,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:40:24 BoogieIcfgContainer [2022-11-16 11:40:24,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:40:24,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:40:24,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:40:24,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:40:24,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:40:22" (1/3) ... [2022-11-16 11:40:24,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a81284e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:40:24, skipping insertion in model container [2022-11-16 11:40:24,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:22" (2/3) ... [2022-11-16 11:40:24,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a81284e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:40:24, skipping insertion in model container [2022-11-16 11:40:24,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:40:24" (3/3) ... [2022-11-16 11:40:24,234 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2022-11-16 11:40:24,244 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:40:24,255 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:40:24,255 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-16 11:40:24,256 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:40:24,349 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:40:24,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 240 transitions, 504 flow [2022-11-16 11:40:24,550 INFO L130 PetriNetUnfolder]: 18/237 cut-off events. [2022-11-16 11:40:24,550 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:40:24,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 237 events. 18/237 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 219 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 194. Up to 3 conditions per place. [2022-11-16 11:40:24,561 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 240 transitions, 504 flow [2022-11-16 11:40:24,568 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 216 transitions, 447 flow [2022-11-16 11:40:24,588 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:40:24,595 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;@54ecc5d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:40:24,595 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-16 11:40:24,609 INFO L130 PetriNetUnfolder]: 3/79 cut-off events. [2022-11-16 11:40:24,610 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:40:24,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:24,611 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:24,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:40:24,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:24,617 INFO L85 PathProgramCache]: Analyzing trace with hash 221300389, now seen corresponding path program 1 times [2022-11-16 11:40:24,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:24,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809555252] [2022-11-16 11:40:24,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:24,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:25,089 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 11:40:25,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:25,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809555252] [2022-11-16 11:40:25,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809555252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:25,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:25,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:40:25,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373857500] [2022-11-16 11:40:25,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:25,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:40:25,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:25,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:40:25,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:40:25,136 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 240 [2022-11-16 11:40:25,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 216 transitions, 447 flow. Second operand has 4 states, 4 states have (on average 182.5) internal successors, (730), 4 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:25,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:25,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 240 [2022-11-16 11:40:25,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:25,871 INFO L130 PetriNetUnfolder]: 585/1689 cut-off events. [2022-11-16 11:40:25,871 INFO L131 PetriNetUnfolder]: For 170/170 co-relation queries the response was YES. [2022-11-16 11:40:25,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2717 conditions, 1689 events. 585/1689 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 10897 event pairs, 328 based on Foata normal form. 212/1259 useless extension candidates. Maximal degree in co-relation 1182. Up to 437 conditions per place. [2022-11-16 11:40:25,900 INFO L137 encePairwiseOnDemand]: 210/240 looper letters, 62 selfloop transitions, 9 changer transitions 5/231 dead transitions. [2022-11-16 11:40:25,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 231 transitions, 634 flow [2022-11-16 11:40:25,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:40:25,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:40:25,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1010 transitions. [2022-11-16 11:40:25,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8416666666666667 [2022-11-16 11:40:25,927 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1010 transitions. [2022-11-16 11:40:25,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1010 transitions. [2022-11-16 11:40:25,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:25,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1010 transitions. [2022-11-16 11:40:25,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:25,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 240.0) internal successors, (1440), 6 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:25,956 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 240.0) internal successors, (1440), 6 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:25,958 INFO L175 Difference]: Start difference. First operand has 209 places, 216 transitions, 447 flow. Second operand 5 states and 1010 transitions. [2022-11-16 11:40:25,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 231 transitions, 634 flow [2022-11-16 11:40:25,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 231 transitions, 616 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:40:25,980 INFO L231 Difference]: Finished difference. Result has 206 places, 201 transitions, 461 flow [2022-11-16 11:40:25,982 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=461, PETRI_PLACES=206, PETRI_TRANSITIONS=201} [2022-11-16 11:40:25,988 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, -3 predicate places. [2022-11-16 11:40:25,989 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 201 transitions, 461 flow [2022-11-16 11:40:25,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 182.5) internal successors, (730), 4 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:25,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:25,992 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:40:25,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:40:25,992 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:40:25,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:25,993 INFO L85 PathProgramCache]: Analyzing trace with hash -772831745, now seen corresponding path program 1 times [2022-11-16 11:40:25,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:25,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895540896] [2022-11-16 11:40:25,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:25,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:26,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:26,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:26,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895540896] [2022-11-16 11:40:26,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895540896] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:26,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142984110] [2022-11-16 11:40:26,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:26,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:26,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:26,251 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:26,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:40:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:26,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:40:26,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:26,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:26,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:40:26,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:26,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142984110] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:40:26,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:40:26,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:40:26,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196477571] [2022-11-16 11:40:26,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:40:26,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:40:26,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:26,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:40:26,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:40:26,546 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 240 [2022-11-16 11:40:26,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 201 transitions, 461 flow. Second operand has 12 states, 12 states have (on average 183.66666666666666) internal successors, (2204), 12 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:26,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:26,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 240 [2022-11-16 11:40:26,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:27,975 INFO L130 PetriNetUnfolder]: 1461/4084 cut-off events. [2022-11-16 11:40:27,976 INFO L131 PetriNetUnfolder]: For 117/117 co-relation queries the response was YES. [2022-11-16 11:40:27,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6573 conditions, 4084 events. 1461/4084 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 30732 event pairs, 820 based on Foata normal form. 6/2510 useless extension candidates. Maximal degree in co-relation 5044. Up to 430 conditions per place. [2022-11-16 11:40:28,020 INFO L137 encePairwiseOnDemand]: 225/240 looper letters, 131 selfloop transitions, 40 changer transitions 0/326 dead transitions. [2022-11-16 11:40:28,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 326 transitions, 1127 flow [2022-11-16 11:40:28,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:40:28,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:40:28,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3435 transitions. [2022-11-16 11:40:28,030 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7951388888888888 [2022-11-16 11:40:28,030 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3435 transitions. [2022-11-16 11:40:28,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3435 transitions. [2022-11-16 11:40:28,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:28,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3435 transitions. [2022-11-16 11:40:28,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 190.83333333333334) internal successors, (3435), 18 states have internal predecessors, (3435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:28,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 240.0) internal successors, (4560), 19 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:28,058 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 240.0) internal successors, (4560), 19 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:28,058 INFO L175 Difference]: Start difference. First operand has 206 places, 201 transitions, 461 flow. Second operand 18 states and 3435 transitions. [2022-11-16 11:40:28,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 326 transitions, 1127 flow [2022-11-16 11:40:28,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 326 transitions, 1122 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:40:28,072 INFO L231 Difference]: Finished difference. Result has 221 places, 228 transitions, 694 flow [2022-11-16 11:40:28,072 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=694, PETRI_PLACES=221, PETRI_TRANSITIONS=228} [2022-11-16 11:40:28,073 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 12 predicate places. [2022-11-16 11:40:28,074 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 228 transitions, 694 flow [2022-11-16 11:40:28,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 183.66666666666666) internal successors, (2204), 12 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:28,076 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:28,077 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:40:28,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:40:28,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:28,283 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:40:28,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:28,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1812020363, now seen corresponding path program 1 times [2022-11-16 11:40:28,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:28,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558911706] [2022-11-16 11:40:28,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:28,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:28,560 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:28,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:28,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558911706] [2022-11-16 11:40:28,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558911706] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:28,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328442840] [2022-11-16 11:40:28,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:28,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:28,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:28,565 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:28,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:40:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:28,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:40:28,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:28,776 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:28,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:40:28,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328442840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:28,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:40:28,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:40:28,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544222981] [2022-11-16 11:40:28,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:28,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:40:28,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:28,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:40:28,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:40:28,803 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 240 [2022-11-16 11:40:28,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 228 transitions, 694 flow. Second operand has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:28,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:28,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 240 [2022-11-16 11:40:28,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:29,889 INFO L130 PetriNetUnfolder]: 1461/4076 cut-off events. [2022-11-16 11:40:29,889 INFO L131 PetriNetUnfolder]: For 211/211 co-relation queries the response was YES. [2022-11-16 11:40:29,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6610 conditions, 4076 events. 1461/4076 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 30656 event pairs, 820 based on Foata normal form. 8/2504 useless extension candidates. Maximal degree in co-relation 5260. Up to 1676 conditions per place. [2022-11-16 11:40:29,929 INFO L137 encePairwiseOnDemand]: 229/240 looper letters, 63 selfloop transitions, 27 changer transitions 0/245 dead transitions. [2022-11-16 11:40:29,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 245 transitions, 880 flow [2022-11-16 11:40:29,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:40:29,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:40:29,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1338 transitions. [2022-11-16 11:40:29,933 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7964285714285714 [2022-11-16 11:40:29,934 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1338 transitions. [2022-11-16 11:40:29,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1338 transitions. [2022-11-16 11:40:29,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:29,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1338 transitions. [2022-11-16 11:40:29,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 191.14285714285714) internal successors, (1338), 7 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:29,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 240.0) internal successors, (1920), 8 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:29,943 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 240.0) internal successors, (1920), 8 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:29,944 INFO L175 Difference]: Start difference. First operand has 221 places, 228 transitions, 694 flow. Second operand 7 states and 1338 transitions. [2022-11-16 11:40:29,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 245 transitions, 880 flow [2022-11-16 11:40:29,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 245 transitions, 806 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-16 11:40:29,952 INFO L231 Difference]: Finished difference. Result has 216 places, 220 transitions, 620 flow [2022-11-16 11:40:29,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=620, PETRI_PLACES=216, PETRI_TRANSITIONS=220} [2022-11-16 11:40:29,954 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 7 predicate places. [2022-11-16 11:40:29,954 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 220 transitions, 620 flow [2022-11-16 11:40:29,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:29,955 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:29,956 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:40:29,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:40:30,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:30,162 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:40:30,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:30,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1061469915, now seen corresponding path program 2 times [2022-11-16 11:40:30,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:30,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809613501] [2022-11-16 11:40:30,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:30,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:30,437 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:30,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:30,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809613501] [2022-11-16 11:40:30,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809613501] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:30,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102785572] [2022-11-16 11:40:30,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:40:30,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:30,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:30,440 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:30,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:40:30,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:40:30,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:40:30,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:40:30,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:30,794 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:40:30,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:40:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:40:30,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102785572] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:40:30,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:40:30,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 11:40:30,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038006875] [2022-11-16 11:40:30,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:40:30,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:40:30,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:30,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:40:30,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:40:30,993 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 240 [2022-11-16 11:40:30,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 220 transitions, 620 flow. Second operand has 18 states, 18 states have (on average 169.61111111111111) internal successors, (3053), 18 states have internal predecessors, (3053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:30,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:30,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 240 [2022-11-16 11:40:30,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:33,104 INFO L130 PetriNetUnfolder]: 897/3482 cut-off events. [2022-11-16 11:40:33,105 INFO L131 PetriNetUnfolder]: For 245/245 co-relation queries the response was YES. [2022-11-16 11:40:33,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5268 conditions, 3482 events. 897/3482 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 26225 event pairs, 546 based on Foata normal form. 4/2583 useless extension candidates. Maximal degree in co-relation 4206. Up to 231 conditions per place. [2022-11-16 11:40:33,130 INFO L137 encePairwiseOnDemand]: 217/240 looper letters, 156 selfloop transitions, 65 changer transitions 0/361 dead transitions. [2022-11-16 11:40:33,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 361 transitions, 1439 flow [2022-11-16 11:40:33,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-16 11:40:33,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-16 11:40:33,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 8380 transitions. [2022-11-16 11:40:33,148 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7125850340136054 [2022-11-16 11:40:33,148 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 8380 transitions. [2022-11-16 11:40:33,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 8380 transitions. [2022-11-16 11:40:33,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:33,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 8380 transitions. [2022-11-16 11:40:33,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 171.0204081632653) internal successors, (8380), 49 states have internal predecessors, (8380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:33,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 240.0) internal successors, (12000), 50 states have internal predecessors, (12000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:33,195 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 240.0) internal successors, (12000), 50 states have internal predecessors, (12000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:33,195 INFO L175 Difference]: Start difference. First operand has 216 places, 220 transitions, 620 flow. Second operand 49 states and 8380 transitions. [2022-11-16 11:40:33,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 361 transitions, 1439 flow [2022-11-16 11:40:33,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 361 transitions, 1396 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:40:33,203 INFO L231 Difference]: Finished difference. Result has 259 places, 242 transitions, 829 flow [2022-11-16 11:40:33,204 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=829, PETRI_PLACES=259, PETRI_TRANSITIONS=242} [2022-11-16 11:40:33,205 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 50 predicate places. [2022-11-16 11:40:33,205 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 242 transitions, 829 flow [2022-11-16 11:40:33,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 169.61111111111111) internal successors, (3053), 18 states have internal predecessors, (3053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:33,207 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:33,207 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:33,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:40:33,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:33,413 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:40:33,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:33,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1442110336, now seen corresponding path program 1 times [2022-11-16 11:40:33,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:33,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708841064] [2022-11-16 11:40:33,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:33,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:33,514 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 11:40:33,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:33,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708841064] [2022-11-16 11:40:33,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708841064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:33,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:33,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:40:33,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616655849] [2022-11-16 11:40:33,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:33,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:40:33,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:33,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:40:33,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:40:33,518 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 240 [2022-11-16 11:40:33,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 242 transitions, 829 flow. Second operand has 4 states, 4 states have (on average 196.5) internal successors, (786), 4 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:33,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:33,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 240 [2022-11-16 11:40:33,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:36,567 INFO L130 PetriNetUnfolder]: 4894/14038 cut-off events. [2022-11-16 11:40:36,567 INFO L131 PetriNetUnfolder]: For 362/362 co-relation queries the response was YES. [2022-11-16 11:40:36,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22901 conditions, 14038 events. 4894/14038 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 136718 event pairs, 2835 based on Foata normal form. 0/10279 useless extension candidates. Maximal degree in co-relation 22618. Up to 4194 conditions per place. [2022-11-16 11:40:36,690 INFO L137 encePairwiseOnDemand]: 234/240 looper letters, 50 selfloop transitions, 4 changer transitions 0/274 dead transitions. [2022-11-16 11:40:36,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 274 transitions, 1012 flow [2022-11-16 11:40:36,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:40:36,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:40:36,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1031 transitions. [2022-11-16 11:40:36,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8591666666666666 [2022-11-16 11:40:36,694 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1031 transitions. [2022-11-16 11:40:36,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1031 transitions. [2022-11-16 11:40:36,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:36,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1031 transitions. [2022-11-16 11:40:36,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 206.2) internal successors, (1031), 5 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:36,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 240.0) internal successors, (1440), 6 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:36,719 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 240.0) internal successors, (1440), 6 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:36,720 INFO L175 Difference]: Start difference. First operand has 259 places, 242 transitions, 829 flow. Second operand 5 states and 1031 transitions. [2022-11-16 11:40:36,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 274 transitions, 1012 flow [2022-11-16 11:40:36,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 274 transitions, 929 flow, removed 9 selfloop flow, removed 15 redundant places. [2022-11-16 11:40:36,727 INFO L231 Difference]: Finished difference. Result has 251 places, 245 transitions, 776 flow [2022-11-16 11:40:36,728 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=776, PETRI_PLACES=251, PETRI_TRANSITIONS=245} [2022-11-16 11:40:36,731 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 42 predicate places. [2022-11-16 11:40:36,731 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 245 transitions, 776 flow [2022-11-16 11:40:36,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.5) internal successors, (786), 4 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:36,732 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:36,732 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:36,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:40:36,733 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:40:36,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:36,734 INFO L85 PathProgramCache]: Analyzing trace with hash 97296151, now seen corresponding path program 1 times [2022-11-16 11:40:36,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:36,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665643445] [2022-11-16 11:40:36,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:36,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:36,946 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 11:40:36,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:36,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665643445] [2022-11-16 11:40:36,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665643445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:36,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:36,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:40:36,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906904109] [2022-11-16 11:40:36,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:36,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:40:36,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:36,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:40:36,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:40:36,953 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 240 [2022-11-16 11:40:36,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 245 transitions, 776 flow. Second operand has 6 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 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 11:40:36,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:36,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 240 [2022-11-16 11:40:36,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:38,253 INFO L130 PetriNetUnfolder]: 1115/4764 cut-off events. [2022-11-16 11:40:38,253 INFO L131 PetriNetUnfolder]: For 447/447 co-relation queries the response was YES. [2022-11-16 11:40:38,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7536 conditions, 4764 events. 1115/4764 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 42447 event pairs, 905 based on Foata normal form. 26/3740 useless extension candidates. Maximal degree in co-relation 7222. Up to 1757 conditions per place. [2022-11-16 11:40:38,296 INFO L137 encePairwiseOnDemand]: 229/240 looper letters, 73 selfloop transitions, 13 changer transitions 2/254 dead transitions. [2022-11-16 11:40:38,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 254 transitions, 975 flow [2022-11-16 11:40:38,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:40:38,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:40:38,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1307 transitions. [2022-11-16 11:40:38,300 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7779761904761905 [2022-11-16 11:40:38,301 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1307 transitions. [2022-11-16 11:40:38,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1307 transitions. [2022-11-16 11:40:38,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:38,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1307 transitions. [2022-11-16 11:40:38,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 186.71428571428572) internal successors, (1307), 7 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:38,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 240.0) internal successors, (1920), 8 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:38,310 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 240.0) internal successors, (1920), 8 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:38,310 INFO L175 Difference]: Start difference. First operand has 251 places, 245 transitions, 776 flow. Second operand 7 states and 1307 transitions. [2022-11-16 11:40:38,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 254 transitions, 975 flow [2022-11-16 11:40:38,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 254 transitions, 973 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:40:38,320 INFO L231 Difference]: Finished difference. Result has 257 places, 245 transitions, 809 flow [2022-11-16 11:40:38,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=809, PETRI_PLACES=257, PETRI_TRANSITIONS=245} [2022-11-16 11:40:38,323 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 48 predicate places. [2022-11-16 11:40:38,323 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 245 transitions, 809 flow [2022-11-16 11:40:38,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 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 11:40:38,324 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:38,324 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:40:38,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:40:38,325 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:40:38,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:38,325 INFO L85 PathProgramCache]: Analyzing trace with hash -448097746, now seen corresponding path program 1 times [2022-11-16 11:40:38,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:38,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737318364] [2022-11-16 11:40:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:38,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:38,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:38,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:38,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737318364] [2022-11-16 11:40:38,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737318364] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:38,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400994060] [2022-11-16 11:40:38,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:38,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:38,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:38,494 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:38,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:40:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:38,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:40:38,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:40:38,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:40:38,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400994060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:38,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:40:38,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2022-11-16 11:40:38,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054312053] [2022-11-16 11:40:38,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:38,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:40:38,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:38,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:40:38,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:40:38,784 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 240 [2022-11-16 11:40:38,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 245 transitions, 809 flow. Second operand has 6 states, 6 states have (on average 182.5) internal successors, (1095), 6 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:38,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:38,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 240 [2022-11-16 11:40:38,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:40,004 INFO L130 PetriNetUnfolder]: 1121/5176 cut-off events. [2022-11-16 11:40:40,004 INFO L131 PetriNetUnfolder]: For 659/659 co-relation queries the response was YES. [2022-11-16 11:40:40,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8786 conditions, 5176 events. 1121/5176 cut-off events. For 659/659 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 46591 event pairs, 905 based on Foata normal form. 92/4187 useless extension candidates. Maximal degree in co-relation 7875. Up to 1822 conditions per place. [2022-11-16 11:40:40,041 INFO L137 encePairwiseOnDemand]: 228/240 looper letters, 93 selfloop transitions, 21 changer transitions 1/281 dead transitions. [2022-11-16 11:40:40,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 281 transitions, 1200 flow [2022-11-16 11:40:40,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:40:40,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:40:40,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1674 transitions. [2022-11-16 11:40:40,046 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.775 [2022-11-16 11:40:40,047 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1674 transitions. [2022-11-16 11:40:40,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1674 transitions. [2022-11-16 11:40:40,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:40,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1674 transitions. [2022-11-16 11:40:40,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 186.0) internal successors, (1674), 9 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:40,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 240.0) internal successors, (2400), 10 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:40,057 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 240.0) internal successors, (2400), 10 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:40,057 INFO L175 Difference]: Start difference. First operand has 257 places, 245 transitions, 809 flow. Second operand 9 states and 1674 transitions. [2022-11-16 11:40:40,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 281 transitions, 1200 flow [2022-11-16 11:40:40,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 281 transitions, 1168 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:40:40,066 INFO L231 Difference]: Finished difference. Result has 262 places, 246 transitions, 842 flow [2022-11-16 11:40:40,067 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=842, PETRI_PLACES=262, PETRI_TRANSITIONS=246} [2022-11-16 11:40:40,068 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 53 predicate places. [2022-11-16 11:40:40,068 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 246 transitions, 842 flow [2022-11-16 11:40:40,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.5) internal successors, (1095), 6 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:40,068 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:40,069 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:40:40,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:40:40,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:40,275 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:40:40,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:40,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1960974868, now seen corresponding path program 1 times [2022-11-16 11:40:40,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:40,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055244992] [2022-11-16 11:40:40,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:40,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:40,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:40:40,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:40,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055244992] [2022-11-16 11:40:40,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055244992] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:40,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615789143] [2022-11-16 11:40:40,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:40,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:40,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:40,412 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:40,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:40:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:40,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:40:40,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:40,850 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:40,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:40:41,227 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:41,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615789143] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:40:41,229 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:40:41,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-11-16 11:40:41,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104000502] [2022-11-16 11:40:41,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:40:41,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:40:41,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:41,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:40:41,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:40:41,239 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 240 [2022-11-16 11:40:41,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 246 transitions, 842 flow. Second operand has 19 states, 19 states have (on average 162.21052631578948) internal successors, (3082), 19 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:41,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:41,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 240 [2022-11-16 11:40:41,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:46,534 INFO L130 PetriNetUnfolder]: 8511/23472 cut-off events. [2022-11-16 11:40:46,535 INFO L131 PetriNetUnfolder]: For 6255/6759 co-relation queries the response was YES. [2022-11-16 11:40:46,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50322 conditions, 23472 events. 8511/23472 cut-off events. For 6255/6759 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 249757 event pairs, 3064 based on Foata normal form. 469/18097 useless extension candidates. Maximal degree in co-relation 42210. Up to 4765 conditions per place. [2022-11-16 11:40:46,737 INFO L137 encePairwiseOnDemand]: 217/240 looper letters, 279 selfloop transitions, 57 changer transitions 2/469 dead transitions. [2022-11-16 11:40:46,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 469 transitions, 2442 flow [2022-11-16 11:40:46,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:40:46,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:40:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4958 transitions. [2022-11-16 11:40:46,747 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6886111111111111 [2022-11-16 11:40:46,747 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4958 transitions. [2022-11-16 11:40:46,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4958 transitions. [2022-11-16 11:40:46,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:46,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4958 transitions. [2022-11-16 11:40:46,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 165.26666666666668) internal successors, (4958), 30 states have internal predecessors, (4958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:46,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 240.0) internal successors, (7440), 31 states have internal predecessors, (7440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:46,771 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 240.0) internal successors, (7440), 31 states have internal predecessors, (7440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:46,772 INFO L175 Difference]: Start difference. First operand has 262 places, 246 transitions, 842 flow. Second operand 30 states and 4958 transitions. [2022-11-16 11:40:46,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 469 transitions, 2442 flow [2022-11-16 11:40:46,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 469 transitions, 2414 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:40:46,809 INFO L231 Difference]: Finished difference. Result has 297 places, 270 transitions, 1149 flow [2022-11-16 11:40:46,810 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1149, PETRI_PLACES=297, PETRI_TRANSITIONS=270} [2022-11-16 11:40:46,810 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 88 predicate places. [2022-11-16 11:40:46,811 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 270 transitions, 1149 flow [2022-11-16 11:40:46,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 162.21052631578948) internal successors, (3082), 19 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:46,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:46,812 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:46,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:40:47,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:47,020 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:40:47,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:47,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1440945648, now seen corresponding path program 1 times [2022-11-16 11:40:47,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:47,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76200004] [2022-11-16 11:40:47,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:47,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:47,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:40:47,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:47,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76200004] [2022-11-16 11:40:47,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76200004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:47,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:47,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:40:47,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615706030] [2022-11-16 11:40:47,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:47,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:40:47,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:47,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:40:47,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:40:47,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 240 [2022-11-16 11:40:47,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 270 transitions, 1149 flow. Second operand has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:47,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:47,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 240 [2022-11-16 11:40:47,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:49,651 INFO L130 PetriNetUnfolder]: 2698/10411 cut-off events. [2022-11-16 11:40:49,652 INFO L131 PetriNetUnfolder]: For 12204/12546 co-relation queries the response was YES. [2022-11-16 11:40:49,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24118 conditions, 10411 events. 2698/10411 cut-off events. For 12204/12546 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 106221 event pairs, 871 based on Foata normal form. 432/8050 useless extension candidates. Maximal degree in co-relation 20252. Up to 3262 conditions per place. [2022-11-16 11:40:49,764 INFO L137 encePairwiseOnDemand]: 236/240 looper letters, 25 selfloop transitions, 2 changer transitions 1/277 dead transitions. [2022-11-16 11:40:49,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 277 transitions, 1246 flow [2022-11-16 11:40:49,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:40:49,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:40:49,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 628 transitions. [2022-11-16 11:40:49,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8722222222222222 [2022-11-16 11:40:49,768 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 628 transitions. [2022-11-16 11:40:49,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 628 transitions. [2022-11-16 11:40:49,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:49,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 628 transitions. [2022-11-16 11:40:49,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:49,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:49,773 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:49,773 INFO L175 Difference]: Start difference. First operand has 297 places, 270 transitions, 1149 flow. Second operand 3 states and 628 transitions. [2022-11-16 11:40:49,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 277 transitions, 1246 flow [2022-11-16 11:40:49,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 277 transitions, 1179 flow, removed 8 selfloop flow, removed 13 redundant places. [2022-11-16 11:40:49,807 INFO L231 Difference]: Finished difference. Result has 287 places, 270 transitions, 1093 flow [2022-11-16 11:40:49,808 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1093, PETRI_PLACES=287, PETRI_TRANSITIONS=270} [2022-11-16 11:40:49,809 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 78 predicate places. [2022-11-16 11:40:49,809 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 270 transitions, 1093 flow [2022-11-16 11:40:49,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:49,810 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:49,810 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:49,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:40:49,939 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:40:49,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:49,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1765769238, now seen corresponding path program 1 times [2022-11-16 11:40:49,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:49,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093848338] [2022-11-16 11:40:49,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:49,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:50,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:40:50,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:50,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093848338] [2022-11-16 11:40:50,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093848338] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:50,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655997028] [2022-11-16 11:40:50,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:50,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:50,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:50,177 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:50,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:40:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:50,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:40:50,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:40:50,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:40:50,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655997028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:50,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:40:50,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-16 11:40:50,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422110223] [2022-11-16 11:40:50,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:50,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:40:50,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:50,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:40:50,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:40:50,496 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 240 [2022-11-16 11:40:50,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 270 transitions, 1093 flow. Second operand has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:50,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:50,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 240 [2022-11-16 11:40:50,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:51,951 INFO L130 PetriNetUnfolder]: 1366/8362 cut-off events. [2022-11-16 11:40:51,951 INFO L131 PetriNetUnfolder]: For 8538/8628 co-relation queries the response was YES. [2022-11-16 11:40:51,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17663 conditions, 8362 events. 1366/8362 cut-off events. For 8538/8628 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 87690 event pairs, 859 based on Foata normal form. 492/7376 useless extension candidates. Maximal degree in co-relation 17396. Up to 2300 conditions per place. [2022-11-16 11:40:52,018 INFO L137 encePairwiseOnDemand]: 235/240 looper letters, 24 selfloop transitions, 3 changer transitions 0/268 dead transitions. [2022-11-16 11:40:52,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 268 transitions, 1137 flow [2022-11-16 11:40:52,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:40:52,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:40:52,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 814 transitions. [2022-11-16 11:40:52,021 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8479166666666667 [2022-11-16 11:40:52,021 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 814 transitions. [2022-11-16 11:40:52,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 814 transitions. [2022-11-16 11:40:52,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:52,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 814 transitions. [2022-11-16 11:40:52,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 203.5) internal successors, (814), 4 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:52,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 240.0) internal successors, (1200), 5 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:52,026 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 240.0) internal successors, (1200), 5 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:52,026 INFO L175 Difference]: Start difference. First operand has 287 places, 270 transitions, 1093 flow. Second operand 4 states and 814 transitions. [2022-11-16 11:40:52,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 268 transitions, 1137 flow [2022-11-16 11:40:52,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 268 transitions, 1128 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-16 11:40:52,052 INFO L231 Difference]: Finished difference. Result has 285 places, 268 transitions, 1080 flow [2022-11-16 11:40:52,053 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1080, PETRI_PLACES=285, PETRI_TRANSITIONS=268} [2022-11-16 11:40:52,054 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 76 predicate places. [2022-11-16 11:40:52,054 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 268 transitions, 1080 flow [2022-11-16 11:40:52,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:52,055 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:52,055 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:52,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-16 11:40:52,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:40:52,260 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:40:52,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:52,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1095729353, now seen corresponding path program 1 times [2022-11-16 11:40:52,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:52,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297452396] [2022-11-16 11:40:52,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:52,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:52,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:40:52,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:52,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297452396] [2022-11-16 11:40:52,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297452396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:52,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:52,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:40:52,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011016775] [2022-11-16 11:40:52,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:52,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:40:52,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:52,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:40:52,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:40:52,556 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 240 [2022-11-16 11:40:52,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 268 transitions, 1080 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:52,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:52,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 240 [2022-11-16 11:40:52,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:53,896 INFO L130 PetriNetUnfolder]: 1073/6779 cut-off events. [2022-11-16 11:40:53,897 INFO L131 PetriNetUnfolder]: For 6179/6589 co-relation queries the response was YES. [2022-11-16 11:40:53,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13501 conditions, 6779 events. 1073/6779 cut-off events. For 6179/6589 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 67644 event pairs, 420 based on Foata normal form. 132/5742 useless extension candidates. Maximal degree in co-relation 13423. Up to 1816 conditions per place. [2022-11-16 11:40:53,954 INFO L137 encePairwiseOnDemand]: 234/240 looper letters, 17 selfloop transitions, 7 changer transitions 0/269 dead transitions. [2022-11-16 11:40:53,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 269 transitions, 1138 flow [2022-11-16 11:40:53,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:40:53,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:40:53,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 616 transitions. [2022-11-16 11:40:53,959 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8555555555555555 [2022-11-16 11:40:53,959 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 616 transitions. [2022-11-16 11:40:53,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 616 transitions. [2022-11-16 11:40:53,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:53,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 616 transitions. [2022-11-16 11:40:53,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:53,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:53,965 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:53,965 INFO L175 Difference]: Start difference. First operand has 285 places, 268 transitions, 1080 flow. Second operand 3 states and 616 transitions. [2022-11-16 11:40:53,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 269 transitions, 1138 flow [2022-11-16 11:40:53,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 269 transitions, 1121 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 11:40:53,992 INFO L231 Difference]: Finished difference. Result has 283 places, 267 transitions, 1093 flow [2022-11-16 11:40:53,993 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1093, PETRI_PLACES=283, PETRI_TRANSITIONS=267} [2022-11-16 11:40:53,993 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 74 predicate places. [2022-11-16 11:40:53,993 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 267 transitions, 1093 flow [2022-11-16 11:40:53,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:53,994 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:53,995 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:40:53,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:40:53,995 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:40:53,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:53,996 INFO L85 PathProgramCache]: Analyzing trace with hash -973829098, now seen corresponding path program 1 times [2022-11-16 11:40:53,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:53,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204306446] [2022-11-16 11:40:53,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:53,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 11:40:54,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:54,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204306446] [2022-11-16 11:40:54,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204306446] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:54,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694856821] [2022-11-16 11:40:54,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:54,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:54,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:54,218 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:54,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:40:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:54,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:40:54,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 11:40:54,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:40:54,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694856821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:54,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:40:54,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:40:54,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333462944] [2022-11-16 11:40:54,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:54,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:40:54,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:54,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:40:54,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:40:54,420 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 240 [2022-11-16 11:40:54,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 267 transitions, 1093 flow. Second operand has 6 states, 6 states have (on average 197.33333333333334) internal successors, (1184), 6 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:54,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:54,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 240 [2022-11-16 11:40:54,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:56,904 INFO L130 PetriNetUnfolder]: 4301/10257 cut-off events. [2022-11-16 11:40:56,904 INFO L131 PetriNetUnfolder]: For 16663/16663 co-relation queries the response was YES. [2022-11-16 11:40:56,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30636 conditions, 10257 events. 4301/10257 cut-off events. For 16663/16663 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 90899 event pairs, 110 based on Foata normal form. 142/9444 useless extension candidates. Maximal degree in co-relation 30375. Up to 2787 conditions per place. [2022-11-16 11:40:57,013 INFO L137 encePairwiseOnDemand]: 235/240 looper letters, 54 selfloop transitions, 12 changer transitions 0/297 dead transitions. [2022-11-16 11:40:57,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 297 transitions, 1356 flow [2022-11-16 11:40:57,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:40:57,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:40:57,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1418 transitions. [2022-11-16 11:40:57,017 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.844047619047619 [2022-11-16 11:40:57,017 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1418 transitions. [2022-11-16 11:40:57,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1418 transitions. [2022-11-16 11:40:57,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:57,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1418 transitions. [2022-11-16 11:40:57,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 202.57142857142858) internal successors, (1418), 7 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:57,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 240.0) internal successors, (1920), 8 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:57,025 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 240.0) internal successors, (1920), 8 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:57,025 INFO L175 Difference]: Start difference. First operand has 283 places, 267 transitions, 1093 flow. Second operand 7 states and 1418 transitions. [2022-11-16 11:40:57,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 297 transitions, 1356 flow [2022-11-16 11:40:57,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 297 transitions, 1317 flow, removed 15 selfloop flow, removed 2 redundant places. [2022-11-16 11:40:57,100 INFO L231 Difference]: Finished difference. Result has 286 places, 265 transitions, 1080 flow [2022-11-16 11:40:57,101 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1080, PETRI_PLACES=286, PETRI_TRANSITIONS=265} [2022-11-16 11:40:57,101 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 77 predicate places. [2022-11-16 11:40:57,101 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 265 transitions, 1080 flow [2022-11-16 11:40:57,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 197.33333333333334) internal successors, (1184), 6 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:57,102 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:57,103 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:57,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:40:57,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 11:40:57,308 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:40:57,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:57,309 INFO L85 PathProgramCache]: Analyzing trace with hash -433760073, now seen corresponding path program 1 times [2022-11-16 11:40:57,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:57,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91245638] [2022-11-16 11:40:57,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:57,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:59,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:40:59,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:59,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91245638] [2022-11-16 11:40:59,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91245638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:59,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531184262] [2022-11-16 11:40:59,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:59,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:59,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:59,034 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:59,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2da34a-75e4-4c03-a847-fe36fce4dd44/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:40:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:59,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-16 11:40:59,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:00,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:41:00,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:41:00,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 11:41:01,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:41:01,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 11:41:01,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:41:01,210 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:41:01,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2022-11-16 11:41:01,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:41:01,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:41:02,576 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:41:02,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2022-11-16 11:41:02,596 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:41:02,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 174 treesize of output 162 [2022-11-16 11:41:02,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2022-11-16 11:41:02,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 110 [2022-11-16 11:41:04,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:41:04,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531184262] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:41:04,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:41:04,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 20] total 54 [2022-11-16 11:41:04,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839600785] [2022-11-16 11:41:04,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:41:04,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-16 11:41:04,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:04,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-16 11:41:04,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=2732, Unknown=11, NotChecked=0, Total=2970 [2022-11-16 11:41:04,214 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 240 [2022-11-16 11:41:04,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 265 transitions, 1080 flow. Second operand has 55 states, 55 states have (on average 120.78181818181818) internal successors, (6643), 55 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:04,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:41:04,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 240 [2022-11-16 11:41:04,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand