./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/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_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/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_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/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 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- 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 12:15:55,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:15:55,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:15:55,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:15:55,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:15:55,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:15:55,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:15:55,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:15:55,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:15:55,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:15:55,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:15:55,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:15:55,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:15:55,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:15:55,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:15:55,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:15:55,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:15:55,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:15:55,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:15:55,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:15:55,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:15:55,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:15:55,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:15:55,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:15:55,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:15:55,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:15:55,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:15:55,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:15:55,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:15:55,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:15:55,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:15:55,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:15:55,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:15:55,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:15:55,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:15:55,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:15:55,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:15:55,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:15:55,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:15:55,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:15:55,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:15:55,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:15:55,218 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:15:55,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:15:55,223 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:15:55,223 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:15:55,224 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:15:55,224 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:15:55,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:15:55,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:15:55,226 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:15:55,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:15:55,227 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:15:55,228 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:15:55,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:15:55,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:15:55,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:15:55,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:15:55,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:15:55,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:15:55,239 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:15:55,239 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:15:55,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:15:55,240 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:15:55,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:15:55,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:15:55,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:15:55,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:15:55,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:15:55,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:15:55,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:15:55,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:15:55,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:15:55,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:15:55,245 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:15:55,245 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:15:55,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:15:55,246 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_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2022-11-16 12:15:55,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:15:55,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:15:55,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:15:55,596 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:15:55,597 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:15:55,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2022-11-16 12:15:55,677 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/data/a15d8da70/a6e80978f9a04e58aacf6b1cb890a5c9/FLAG44437a31f [2022-11-16 12:15:56,335 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:15:56,336 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2022-11-16 12:15:56,357 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/data/a15d8da70/a6e80978f9a04e58aacf6b1cb890a5c9/FLAG44437a31f [2022-11-16 12:15:56,580 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/data/a15d8da70/a6e80978f9a04e58aacf6b1cb890a5c9 [2022-11-16 12:15:56,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:15:56,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:15:56,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:15:56,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:15:56,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:15:56,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:15:56" (1/1) ... [2022-11-16 12:15:56,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4726a2cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:56, skipping insertion in model container [2022-11-16 12:15:56,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:15:56" (1/1) ... [2022-11-16 12:15:56,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:15:56,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:15:57,202 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_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2022-11-16 12:15:57,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:15:57,259 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:15:57,297 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_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2022-11-16 12:15:57,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:15:57,377 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:15:57,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:57 WrapperNode [2022-11-16 12:15:57,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:15:57,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:15:57,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:15:57,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:15:57,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:57" (1/1) ... [2022-11-16 12:15:57,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:57" (1/1) ... [2022-11-16 12:15:57,468 INFO L138 Inliner]: procedures = 278, calls = 54, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 216 [2022-11-16 12:15:57,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:15:57,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:15:57,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:15:57,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:15:57,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:57" (1/1) ... [2022-11-16 12:15:57,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:57" (1/1) ... [2022-11-16 12:15:57,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:57" (1/1) ... [2022-11-16 12:15:57,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:57" (1/1) ... [2022-11-16 12:15:57,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:57" (1/1) ... [2022-11-16 12:15:57,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:57" (1/1) ... [2022-11-16 12:15:57,529 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:57" (1/1) ... [2022-11-16 12:15:57,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:57" (1/1) ... [2022-11-16 12:15:57,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:15:57,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:15:57,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:15:57,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:15:57,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:57" (1/1) ... [2022-11-16 12:15:57,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:15:57,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:57,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:15:57,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:15:57,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:15:57,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:15:57,609 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-16 12:15:57,609 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-16 12:15:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:15:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:15:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-16 12:15:57,610 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-16 12:15:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:15:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:15:57,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:15:57,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:15:57,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:15:57,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:15:57,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:15:57,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:15:57,613 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 12:15:57,834 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:15:57,836 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:15:58,445 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:15:58,455 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:15:58,455 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-16 12:15:58,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:15:58 BoogieIcfgContainer [2022-11-16 12:15:58,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:15:58,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:15:58,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:15:58,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:15:58,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:15:56" (1/3) ... [2022-11-16 12:15:58,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2d63c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:15:58, skipping insertion in model container [2022-11-16 12:15:58,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:57" (2/3) ... [2022-11-16 12:15:58,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2d63c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:15:58, skipping insertion in model container [2022-11-16 12:15:58,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:15:58" (3/3) ... [2022-11-16 12:15:58,474 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2022-11-16 12:15:58,487 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:15:58,501 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:15:58,502 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-16 12:15:58,502 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:15:58,649 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 12:15:58,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 243 transitions, 508 flow [2022-11-16 12:15:58,945 INFO L130 PetriNetUnfolder]: 52/464 cut-off events. [2022-11-16 12:15:58,946 INFO L131 PetriNetUnfolder]: For 8/15 co-relation queries the response was YES. [2022-11-16 12:15:58,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 464 events. 52/464 cut-off events. For 8/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1895 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2022-11-16 12:15:58,958 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 243 transitions, 508 flow [2022-11-16 12:15:58,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 243 transitions, 508 flow [2022-11-16 12:15:58,990 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:15:59,003 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;@46e8037a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:15:59,003 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-16 12:15:59,024 INFO L130 PetriNetUnfolder]: 4/79 cut-off events. [2022-11-16 12:15:59,024 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:15:59,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:15:59,025 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] [2022-11-16 12:15:59,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:15:59,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:59,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1962439189, now seen corresponding path program 1 times [2022-11-16 12:15:59,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:59,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021837983] [2022-11-16 12:15:59,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:59,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:59,565 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 12:15:59,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:59,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021837983] [2022-11-16 12:15:59,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021837983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:59,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:59,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:15:59,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481174571] [2022-11-16 12:15:59,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:59,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:15:59,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:59,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:15:59,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:15:59,629 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 243 [2022-11-16 12:15:59,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 243 transitions, 508 flow. Second operand has 4 states, 4 states have (on average 209.75) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:59,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:15:59,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 243 [2022-11-16 12:15:59,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:15:59,806 INFO L130 PetriNetUnfolder]: 9/315 cut-off events. [2022-11-16 12:15:59,806 INFO L131 PetriNetUnfolder]: For 27/61 co-relation queries the response was YES. [2022-11-16 12:15:59,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 315 events. 9/315 cut-off events. For 27/61 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 915 event pairs, 0 based on Foata normal form. 48/329 useless extension candidates. Maximal degree in co-relation 209. Up to 15 conditions per place. [2022-11-16 12:15:59,813 INFO L137 encePairwiseOnDemand]: 220/243 looper letters, 14 selfloop transitions, 4 changer transitions 0/226 dead transitions. [2022-11-16 12:15:59,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 226 transitions, 510 flow [2022-11-16 12:15:59,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:15:59,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:15:59,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1078 transitions. [2022-11-16 12:15:59,840 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8872427983539095 [2022-11-16 12:15:59,844 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1078 transitions. [2022-11-16 12:15:59,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1078 transitions. [2022-11-16 12:15:59,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:15:59,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1078 transitions. [2022-11-16 12:15:59,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 215.6) internal successors, (1078), 5 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:59,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:59,871 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:59,873 INFO L175 Difference]: Start difference. First operand has 225 places, 243 transitions, 508 flow. Second operand 5 states and 1078 transitions. [2022-11-16 12:15:59,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 226 transitions, 510 flow [2022-11-16 12:15:59,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 226 transitions, 510 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:15:59,888 INFO L231 Difference]: Finished difference. Result has 227 places, 224 transitions, 482 flow [2022-11-16 12:15:59,890 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=482, PETRI_PLACES=227, PETRI_TRANSITIONS=224} [2022-11-16 12:15:59,894 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 2 predicate places. [2022-11-16 12:15:59,895 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 224 transitions, 482 flow [2022-11-16 12:15:59,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 209.75) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:59,896 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:15:59,897 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:59,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:15:59,898 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:15:59,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:59,899 INFO L85 PathProgramCache]: Analyzing trace with hash 321938608, now seen corresponding path program 1 times [2022-11-16 12:15:59,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:59,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353643199] [2022-11-16 12:15:59,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:59,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:15:59,935 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:15:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:16:00,005 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:16:00,008 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:16:00,010 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-11-16 12:16:00,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-16 12:16:00,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-16 12:16:00,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-16 12:16:00,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-16 12:16:00,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-16 12:16:00,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-16 12:16:00,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-16 12:16:00,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-16 12:16:00,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-16 12:16:00,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-16 12:16:00,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-16 12:16:00,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-16 12:16:00,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 18 remaining) [2022-11-16 12:16:00,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-16 12:16:00,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-16 12:16:00,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-16 12:16:00,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-16 12:16:00,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:16:00,029 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 12:16:00,033 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:16:00,033 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 12:16:00,121 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-16 12:16:00,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 337 places, 370 transitions, 788 flow [2022-11-16 12:16:00,603 INFO L130 PetriNetUnfolder]: 191/1413 cut-off events. [2022-11-16 12:16:00,603 INFO L131 PetriNetUnfolder]: For 72/95 co-relation queries the response was YES. [2022-11-16 12:16:00,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1510 conditions, 1413 events. 191/1413 cut-off events. For 72/95 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 9097 event pairs, 2 based on Foata normal form. 0/1132 useless extension candidates. Maximal degree in co-relation 873. Up to 32 conditions per place. [2022-11-16 12:16:00,629 INFO L82 GeneralOperation]: Start removeDead. Operand has 337 places, 370 transitions, 788 flow [2022-11-16 12:16:00,650 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 337 places, 370 transitions, 788 flow [2022-11-16 12:16:00,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:16:00,658 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;@46e8037a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:16:00,659 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-16 12:16:00,677 INFO L130 PetriNetUnfolder]: 4/80 cut-off events. [2022-11-16 12:16:00,687 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:16:00,687 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:00,687 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] [2022-11-16 12:16:00,688 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-16 12:16:00,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:00,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1481137324, now seen corresponding path program 1 times [2022-11-16 12:16:00,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:00,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208605149] [2022-11-16 12:16:00,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:00,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:00,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:00,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208605149] [2022-11-16 12:16:00,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208605149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:00,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:00,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:16:00,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646386734] [2022-11-16 12:16:00,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:00,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:16:00,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:00,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:16:00,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:16:00,928 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 370 [2022-11-16 12:16:00,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 370 transitions, 788 flow. Second operand has 4 states, 4 states have (on average 317.75) internal successors, (1271), 4 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:00,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:00,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 370 [2022-11-16 12:16:00,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:01,536 INFO L130 PetriNetUnfolder]: 66/1085 cut-off events. [2022-11-16 12:16:01,536 INFO L131 PetriNetUnfolder]: For 245/480 co-relation queries the response was YES. [2022-11-16 12:16:01,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1268 conditions, 1085 events. 66/1085 cut-off events. For 245/480 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6700 event pairs, 2 based on Foata normal form. 406/1342 useless extension candidates. Maximal degree in co-relation 807. Up to 85 conditions per place. [2022-11-16 12:16:01,563 INFO L137 encePairwiseOnDemand]: 335/370 looper letters, 27 selfloop transitions, 4 changer transitions 0/347 dead transitions. [2022-11-16 12:16:01,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 347 transitions, 804 flow [2022-11-16 12:16:01,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:16:01,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:16:01,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1643 transitions. [2022-11-16 12:16:01,569 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8881081081081081 [2022-11-16 12:16:01,569 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1643 transitions. [2022-11-16 12:16:01,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1643 transitions. [2022-11-16 12:16:01,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:01,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1643 transitions. [2022-11-16 12:16:01,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 328.6) internal successors, (1643), 5 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:01,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 370.0) internal successors, (2220), 6 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:01,583 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 370.0) internal successors, (2220), 6 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:01,583 INFO L175 Difference]: Start difference. First operand has 337 places, 370 transitions, 788 flow. Second operand 5 states and 1643 transitions. [2022-11-16 12:16:01,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 347 transitions, 804 flow [2022-11-16 12:16:01,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 347 transitions, 804 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:16:01,598 INFO L231 Difference]: Finished difference. Result has 342 places, 343 transitions, 760 flow [2022-11-16 12:16:01,599 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=760, PETRI_PLACES=342, PETRI_TRANSITIONS=343} [2022-11-16 12:16:01,600 INFO L288 CegarLoopForPetriNet]: 337 programPoint places, 5 predicate places. [2022-11-16 12:16:01,600 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 343 transitions, 760 flow [2022-11-16 12:16:01,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 317.75) internal successors, (1271), 4 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:01,601 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:01,601 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:01,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:16:01,602 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-16 12:16:01,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:01,602 INFO L85 PathProgramCache]: Analyzing trace with hash 19348671, now seen corresponding path program 1 times [2022-11-16 12:16:01,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:01,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400336756] [2022-11-16 12:16:01,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:01,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:01,802 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:16:01,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:01,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400336756] [2022-11-16 12:16:01,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400336756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:01,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:01,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:16:01,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686341625] [2022-11-16 12:16:01,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:01,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:16:01,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:01,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:16:01,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:16:01,808 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 370 [2022-11-16 12:16:01,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 343 transitions, 760 flow. Second operand has 4 states, 4 states have (on average 319.75) internal successors, (1279), 4 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:01,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:01,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 370 [2022-11-16 12:16:01,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:02,246 INFO L130 PetriNetUnfolder]: 66/1084 cut-off events. [2022-11-16 12:16:02,246 INFO L131 PetriNetUnfolder]: For 251/476 co-relation queries the response was YES. [2022-11-16 12:16:02,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 1084 events. 66/1084 cut-off events. For 251/476 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6640 event pairs, 2 based on Foata normal form. 13/952 useless extension candidates. Maximal degree in co-relation 1194. Up to 74 conditions per place. [2022-11-16 12:16:02,275 INFO L137 encePairwiseOnDemand]: 364/370 looper letters, 19 selfloop transitions, 8 changer transitions 0/343 dead transitions. [2022-11-16 12:16:02,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 343 transitions, 812 flow [2022-11-16 12:16:02,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:16:02,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:16:02,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1605 transitions. [2022-11-16 12:16:02,283 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8675675675675676 [2022-11-16 12:16:02,283 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1605 transitions. [2022-11-16 12:16:02,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1605 transitions. [2022-11-16 12:16:02,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:02,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1605 transitions. [2022-11-16 12:16:02,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:02,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 370.0) internal successors, (2220), 6 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:02,293 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 370.0) internal successors, (2220), 6 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:02,294 INFO L175 Difference]: Start difference. First operand has 342 places, 343 transitions, 760 flow. Second operand 5 states and 1605 transitions. [2022-11-16 12:16:02,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 343 transitions, 812 flow [2022-11-16 12:16:02,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 343 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:16:02,301 INFO L231 Difference]: Finished difference. Result has 345 places, 343 transitions, 778 flow [2022-11-16 12:16:02,302 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=778, PETRI_PLACES=345, PETRI_TRANSITIONS=343} [2022-11-16 12:16:02,303 INFO L288 CegarLoopForPetriNet]: 337 programPoint places, 8 predicate places. [2022-11-16 12:16:02,303 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 343 transitions, 778 flow [2022-11-16 12:16:02,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 319.75) internal successors, (1279), 4 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:02,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:02,304 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:02,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:16:02,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-16 12:16:02,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:02,305 INFO L85 PathProgramCache]: Analyzing trace with hash 599809560, now seen corresponding path program 1 times [2022-11-16 12:16:02,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:02,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852901029] [2022-11-16 12:16:02,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:02,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:02,477 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:02,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:02,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852901029] [2022-11-16 12:16:02,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852901029] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:16:02,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111940612] [2022-11-16 12:16:02,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:02,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:02,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:02,482 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:02,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:16:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:02,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:16:02,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:02,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:02,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111940612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:02,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:16:02,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:16:02,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848286472] [2022-11-16 12:16:02,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:02,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:16:02,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:02,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:16:02,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:16:02,743 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 370 [2022-11-16 12:16:02,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 343 transitions, 778 flow. Second operand has 5 states, 5 states have (on average 319.2) internal successors, (1596), 5 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:02,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:02,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 370 [2022-11-16 12:16:02,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:03,171 INFO L130 PetriNetUnfolder]: 66/1083 cut-off events. [2022-11-16 12:16:03,171 INFO L131 PetriNetUnfolder]: For 258/473 co-relation queries the response was YES. [2022-11-16 12:16:03,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1292 conditions, 1083 events. 66/1083 cut-off events. For 258/473 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6708 event pairs, 2 based on Foata normal form. 5/943 useless extension candidates. Maximal degree in co-relation 823. Up to 81 conditions per place. [2022-11-16 12:16:03,203 INFO L137 encePairwiseOnDemand]: 366/370 looper letters, 21 selfloop transitions, 5 changer transitions 0/342 dead transitions. [2022-11-16 12:16:03,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 342 transitions, 826 flow [2022-11-16 12:16:03,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:16:03,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:16:03,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1287 transitions. [2022-11-16 12:16:03,207 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8695945945945946 [2022-11-16 12:16:03,207 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1287 transitions. [2022-11-16 12:16:03,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1287 transitions. [2022-11-16 12:16:03,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:03,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1287 transitions. [2022-11-16 12:16:03,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 321.75) internal successors, (1287), 4 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:03,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:03,216 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:03,217 INFO L175 Difference]: Start difference. First operand has 345 places, 343 transitions, 778 flow. Second operand 4 states and 1287 transitions. [2022-11-16 12:16:03,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 342 transitions, 826 flow [2022-11-16 12:16:03,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 342 transitions, 814 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:16:03,225 INFO L231 Difference]: Finished difference. Result has 344 places, 342 transitions, 772 flow [2022-11-16 12:16:03,226 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=772, PETRI_PLACES=344, PETRI_TRANSITIONS=342} [2022-11-16 12:16:03,226 INFO L288 CegarLoopForPetriNet]: 337 programPoint places, 7 predicate places. [2022-11-16 12:16:03,226 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 342 transitions, 772 flow [2022-11-16 12:16:03,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 319.2) internal successors, (1596), 5 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:03,228 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:03,228 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] [2022-11-16 12:16:03,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:03,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:03,436 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-16 12:16:03,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:03,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1010029398, now seen corresponding path program 1 times [2022-11-16 12:16:03,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:03,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641725346] [2022-11-16 12:16:03,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:03,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:03,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:03,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641725346] [2022-11-16 12:16:03,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641725346] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:16:03,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452566559] [2022-11-16 12:16:03,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:03,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:03,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:03,570 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:03,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:16:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:03,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:16:03,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:03,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:03,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:16:03,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:03,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452566559] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:16:03,920 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:16:03,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:16:03,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827533313] [2022-11-16 12:16:03,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:16:03,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:16:03,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:03,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:16:03,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:16:03,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 370 [2022-11-16 12:16:03,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 342 transitions, 772 flow. Second operand has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:03,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:03,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 370 [2022-11-16 12:16:03,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:04,053 INFO L130 PetriNetUnfolder]: 0/131 cut-off events. [2022-11-16 12:16:04,053 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-16 12:16:04,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 131 events. 0/131 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 101 event pairs, 0 based on Foata normal form. 2/133 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2022-11-16 12:16:04,054 INFO L137 encePairwiseOnDemand]: 365/370 looper letters, 13 selfloop transitions, 7 changer transitions 0/125 dead transitions. [2022-11-16 12:16:04,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 125 transitions, 342 flow [2022-11-16 12:16:04,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:16:04,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:16:04,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2866 transitions. [2022-11-16 12:16:04,063 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8606606606606607 [2022-11-16 12:16:04,063 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2866 transitions. [2022-11-16 12:16:04,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2866 transitions. [2022-11-16 12:16:04,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:04,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2866 transitions. [2022-11-16 12:16:04,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 318.44444444444446) internal successors, (2866), 9 states have internal predecessors, (2866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:04,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 370.0) internal successors, (3700), 10 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:04,083 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 370.0) internal successors, (3700), 10 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:04,083 INFO L175 Difference]: Start difference. First operand has 344 places, 342 transitions, 772 flow. Second operand 9 states and 2866 transitions. [2022-11-16 12:16:04,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 125 transitions, 342 flow [2022-11-16 12:16:04,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 125 transitions, 330 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-16 12:16:04,088 INFO L231 Difference]: Finished difference. Result has 139 places, 120 transitions, 292 flow [2022-11-16 12:16:04,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=292, PETRI_PLACES=139, PETRI_TRANSITIONS=120} [2022-11-16 12:16:04,089 INFO L288 CegarLoopForPetriNet]: 337 programPoint places, -198 predicate places. [2022-11-16 12:16:04,089 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 120 transitions, 292 flow [2022-11-16 12:16:04,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:04,091 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:04,091 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:04,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:04,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:16:04,297 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-16 12:16:04,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:04,298 INFO L85 PathProgramCache]: Analyzing trace with hash 771340285, now seen corresponding path program 1 times [2022-11-16 12:16:04,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:04,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302503264] [2022-11-16 12:16:04,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:04,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:16:04,343 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:16:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:16:04,410 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:16:04,412 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:16:04,412 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-16 12:16:04,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2022-11-16 12:16:04,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2022-11-16 12:16:04,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2022-11-16 12:16:04,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2022-11-16 12:16:04,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2022-11-16 12:16:04,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2022-11-16 12:16:04,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2022-11-16 12:16:04,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2022-11-16 12:16:04,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2022-11-16 12:16:04,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2022-11-16 12:16:04,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2022-11-16 12:16:04,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2022-11-16 12:16:04,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 22 remaining) [2022-11-16 12:16:04,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2022-11-16 12:16:04,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2022-11-16 12:16:04,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2022-11-16 12:16:04,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2022-11-16 12:16:04,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2022-11-16 12:16:04,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2022-11-16 12:16:04,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2022-11-16 12:16:04,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2022-11-16 12:16:04,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:16:04,423 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 12:16:04,424 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:16:04,424 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 12:16:04,541 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-16 12:16:04,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 449 places, 497 transitions, 1072 flow [2022-11-16 12:16:06,009 INFO L130 PetriNetUnfolder]: 664/4036 cut-off events. [2022-11-16 12:16:06,009 INFO L131 PetriNetUnfolder]: For 419/462 co-relation queries the response was YES. [2022-11-16 12:16:06,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4487 conditions, 4036 events. 664/4036 cut-off events. For 419/462 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 32329 event pairs, 52 based on Foata normal form. 0/3225 useless extension candidates. Maximal degree in co-relation 2570. Up to 192 conditions per place. [2022-11-16 12:16:06,083 INFO L82 GeneralOperation]: Start removeDead. Operand has 449 places, 497 transitions, 1072 flow [2022-11-16 12:16:06,150 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 449 places, 497 transitions, 1072 flow [2022-11-16 12:16:06,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:16:06,152 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;@46e8037a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:16:06,153 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-16 12:16:06,160 INFO L130 PetriNetUnfolder]: 4/84 cut-off events. [2022-11-16 12:16:06,160 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:16:06,160 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:06,160 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] [2022-11-16 12:16:06,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 12:16:06,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:06,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1012351812, now seen corresponding path program 1 times [2022-11-16 12:16:06,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:06,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248327758] [2022-11-16 12:16:06,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:06,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:06,260 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 12:16:06,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:06,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248327758] [2022-11-16 12:16:06,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248327758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:06,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:06,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:16:06,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130622018] [2022-11-16 12:16:06,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:06,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:16:06,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:06,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:16:06,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:16:06,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 497 [2022-11-16 12:16:06,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 497 transitions, 1072 flow. Second operand has 4 states, 4 states have (on average 425.75) internal successors, (1703), 4 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:06,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:06,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 497 [2022-11-16 12:16:06,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:07,973 INFO L130 PetriNetUnfolder]: 359/3429 cut-off events. [2022-11-16 12:16:07,973 INFO L131 PetriNetUnfolder]: For 1259/1778 co-relation queries the response was YES. [2022-11-16 12:16:08,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4297 conditions, 3429 events. 359/3429 cut-off events. For 1259/1778 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 28473 event pairs, 36 based on Foata normal form. 2426/5343 useless extension candidates. Maximal degree in co-relation 2538. Up to 421 conditions per place. [2022-11-16 12:16:08,116 INFO L137 encePairwiseOnDemand]: 450/497 looper letters, 33 selfloop transitions, 4 changer transitions 0/461 dead transitions. [2022-11-16 12:16:08,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 461 transitions, 1074 flow [2022-11-16 12:16:08,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:16:08,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:16:08,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2201 transitions. [2022-11-16 12:16:08,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8857142857142857 [2022-11-16 12:16:08,124 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2201 transitions. [2022-11-16 12:16:08,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2201 transitions. [2022-11-16 12:16:08,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:08,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2201 transitions. [2022-11-16 12:16:08,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 440.2) internal successors, (2201), 5 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:08,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 497.0) internal successors, (2982), 6 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:08,242 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 497.0) internal successors, (2982), 6 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:08,249 INFO L175 Difference]: Start difference. First operand has 449 places, 497 transitions, 1072 flow. Second operand 5 states and 2201 transitions. [2022-11-16 12:16:08,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 461 transitions, 1074 flow [2022-11-16 12:16:08,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 461 transitions, 1074 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:16:08,264 INFO L231 Difference]: Finished difference. Result has 453 places, 457 transitions, 1018 flow [2022-11-16 12:16:08,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1018, PETRI_PLACES=453, PETRI_TRANSITIONS=457} [2022-11-16 12:16:08,267 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 4 predicate places. [2022-11-16 12:16:08,267 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 457 transitions, 1018 flow [2022-11-16 12:16:08,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 425.75) internal successors, (1703), 4 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:08,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:08,268 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:08,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:16:08,269 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 12:16:08,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:08,269 INFO L85 PathProgramCache]: Analyzing trace with hash -762281632, now seen corresponding path program 1 times [2022-11-16 12:16:08,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:08,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773101116] [2022-11-16 12:16:08,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:08,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:08,356 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:16:08,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:08,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773101116] [2022-11-16 12:16:08,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773101116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:08,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:08,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:16:08,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021642862] [2022-11-16 12:16:08,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:08,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:16:08,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:08,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:16:08,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:16:08,360 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 497 [2022-11-16 12:16:08,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 457 transitions, 1018 flow. Second operand has 4 states, 4 states have (on average 427.75) internal successors, (1711), 4 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:08,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:08,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 497 [2022-11-16 12:16:08,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:09,928 INFO L130 PetriNetUnfolder]: 359/3427 cut-off events. [2022-11-16 12:16:09,928 INFO L131 PetriNetUnfolder]: For 1266/1768 co-relation queries the response was YES. [2022-11-16 12:16:10,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4315 conditions, 3427 events. 359/3427 cut-off events. For 1266/1768 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 28617 event pairs, 36 based on Foata normal form. 20/2942 useless extension candidates. Maximal degree in co-relation 4224. Up to 401 conditions per place. [2022-11-16 12:16:10,058 INFO L137 encePairwiseOnDemand]: 491/497 looper letters, 25 selfloop transitions, 8 changer transitions 0/457 dead transitions. [2022-11-16 12:16:10,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 457 transitions, 1082 flow [2022-11-16 12:16:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:16:10,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:16:10,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2151 transitions. [2022-11-16 12:16:10,065 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8655935613682093 [2022-11-16 12:16:10,065 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2151 transitions. [2022-11-16 12:16:10,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2151 transitions. [2022-11-16 12:16:10,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:10,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2151 transitions. [2022-11-16 12:16:10,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 430.2) internal successors, (2151), 5 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:10,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 497.0) internal successors, (2982), 6 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:10,096 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 497.0) internal successors, (2982), 6 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:10,097 INFO L175 Difference]: Start difference. First operand has 453 places, 457 transitions, 1018 flow. Second operand 5 states and 2151 transitions. [2022-11-16 12:16:10,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 457 transitions, 1082 flow [2022-11-16 12:16:10,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 457 transitions, 1080 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:16:10,109 INFO L231 Difference]: Finished difference. Result has 456 places, 457 transitions, 1036 flow [2022-11-16 12:16:10,110 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1036, PETRI_PLACES=456, PETRI_TRANSITIONS=457} [2022-11-16 12:16:10,112 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 7 predicate places. [2022-11-16 12:16:10,112 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 457 transitions, 1036 flow [2022-11-16 12:16:10,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 427.75) internal successors, (1711), 4 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:10,113 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:10,114 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:10,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:16:10,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 12:16:10,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:10,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2139074438, now seen corresponding path program 1 times [2022-11-16 12:16:10,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:10,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667495509] [2022-11-16 12:16:10,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:10,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:10,245 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:10,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:10,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667495509] [2022-11-16 12:16:10,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667495509] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:16:10,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247926555] [2022-11-16 12:16:10,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:10,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:10,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:10,248 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:10,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:16:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:10,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:16:10,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:10,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:10,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:10,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247926555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:10,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:16:10,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:16:10,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359208737] [2022-11-16 12:16:10,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:10,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:16:10,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:10,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:16:10,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:16:10,511 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 497 [2022-11-16 12:16:10,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 457 transitions, 1036 flow. Second operand has 5 states, 5 states have (on average 427.2) internal successors, (2136), 5 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:10,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:10,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 497 [2022-11-16 12:16:10,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:11,890 INFO L130 PetriNetUnfolder]: 359/3425 cut-off events. [2022-11-16 12:16:11,890 INFO L131 PetriNetUnfolder]: For 1277/1762 co-relation queries the response was YES. [2022-11-16 12:16:11,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4326 conditions, 3425 events. 359/3425 cut-off events. For 1277/1762 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 28453 event pairs, 36 based on Foata normal form. 8/2928 useless extension candidates. Maximal degree in co-relation 2559. Up to 411 conditions per place. [2022-11-16 12:16:12,005 INFO L137 encePairwiseOnDemand]: 493/497 looper letters, 27 selfloop transitions, 5 changer transitions 0/456 dead transitions. [2022-11-16 12:16:12,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 456 transitions, 1096 flow [2022-11-16 12:16:12,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:16:12,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:16:12,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1725 transitions. [2022-11-16 12:16:12,011 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8677062374245473 [2022-11-16 12:16:12,011 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1725 transitions. [2022-11-16 12:16:12,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1725 transitions. [2022-11-16 12:16:12,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:12,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1725 transitions. [2022-11-16 12:16:12,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 431.25) internal successors, (1725), 4 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:12,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:12,023 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:12,023 INFO L175 Difference]: Start difference. First operand has 456 places, 457 transitions, 1036 flow. Second operand 4 states and 1725 transitions. [2022-11-16 12:16:12,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 456 transitions, 1096 flow [2022-11-16 12:16:12,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 456 transitions, 1084 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:16:12,214 INFO L231 Difference]: Finished difference. Result has 455 places, 456 transitions, 1030 flow [2022-11-16 12:16:12,214 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1030, PETRI_PLACES=455, PETRI_TRANSITIONS=456} [2022-11-16 12:16:12,215 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 6 predicate places. [2022-11-16 12:16:12,215 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 456 transitions, 1030 flow [2022-11-16 12:16:12,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 427.2) internal successors, (2136), 5 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:12,216 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:12,216 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] [2022-11-16 12:16:12,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:12,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:16:12,425 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 12:16:12,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:12,426 INFO L85 PathProgramCache]: Analyzing trace with hash 440800907, now seen corresponding path program 1 times [2022-11-16 12:16:12,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:12,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060895617] [2022-11-16 12:16:12,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:12,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:12,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:12,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:12,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060895617] [2022-11-16 12:16:12,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060895617] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:16:12,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083422937] [2022-11-16 12:16:12,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:12,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:12,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:12,549 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:12,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:16:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:12,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:16:12,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:12,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:16:12,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:12,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083422937] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:16:12,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:16:12,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:16:12,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877489176] [2022-11-16 12:16:12,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:16:12,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:16:12,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:12,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:16:12,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:16:12,852 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 497 [2022-11-16 12:16:12,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 456 transitions, 1030 flow. Second operand has 10 states, 10 states have (on average 427.0) internal successors, (4270), 10 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:12,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:12,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 497 [2022-11-16 12:16:12,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:13,888 INFO L130 PetriNetUnfolder]: 333/2823 cut-off events. [2022-11-16 12:16:13,888 INFO L131 PetriNetUnfolder]: For 1233/1407 co-relation queries the response was YES. [2022-11-16 12:16:13,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3688 conditions, 2823 events. 333/2823 cut-off events. For 1233/1407 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 21365 event pairs, 76 based on Foata normal form. 8/2410 useless extension candidates. Maximal degree in co-relation 3535. Up to 392 conditions per place. [2022-11-16 12:16:13,960 INFO L137 encePairwiseOnDemand]: 491/497 looper letters, 34 selfloop transitions, 9 changer transitions 0/467 dead transitions. [2022-11-16 12:16:13,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 467 transitions, 1154 flow [2022-11-16 12:16:13,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:16:13,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:16:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3861 transitions. [2022-11-16 12:16:13,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8631790744466801 [2022-11-16 12:16:13,969 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3861 transitions. [2022-11-16 12:16:13,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3861 transitions. [2022-11-16 12:16:13,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:13,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3861 transitions. [2022-11-16 12:16:13,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 429.0) internal successors, (3861), 9 states have internal predecessors, (3861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:13,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 497.0) internal successors, (4970), 10 states have internal predecessors, (4970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:13,989 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 497.0) internal successors, (4970), 10 states have internal predecessors, (4970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:13,989 INFO L175 Difference]: Start difference. First operand has 455 places, 456 transitions, 1030 flow. Second operand 9 states and 3861 transitions. [2022-11-16 12:16:13,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 467 transitions, 1154 flow [2022-11-16 12:16:13,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 467 transitions, 1140 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:16:14,000 INFO L231 Difference]: Finished difference. Result has 464 places, 460 transitions, 1076 flow [2022-11-16 12:16:14,001 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1076, PETRI_PLACES=464, PETRI_TRANSITIONS=460} [2022-11-16 12:16:14,001 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 15 predicate places. [2022-11-16 12:16:14,002 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 460 transitions, 1076 flow [2022-11-16 12:16:14,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 427.0) internal successors, (4270), 10 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:14,003 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:14,003 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:14,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:14,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 12:16:14,209 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 12:16:14,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:14,210 INFO L85 PathProgramCache]: Analyzing trace with hash 858784956, now seen corresponding path program 1 times [2022-11-16 12:16:14,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:14,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392552204] [2022-11-16 12:16:14,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:14,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:16:14,238 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:16:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:16:14,265 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:16:14,265 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:16:14,266 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2022-11-16 12:16:14,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2022-11-16 12:16:14,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2022-11-16 12:16:14,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2022-11-16 12:16:14,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2022-11-16 12:16:14,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2022-11-16 12:16:14,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2022-11-16 12:16:14,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2022-11-16 12:16:14,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2022-11-16 12:16:14,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 26 remaining) [2022-11-16 12:16:14,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2022-11-16 12:16:14,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2022-11-16 12:16:14,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2022-11-16 12:16:14,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2022-11-16 12:16:14,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2022-11-16 12:16:14,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2022-11-16 12:16:14,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2022-11-16 12:16:14,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2022-11-16 12:16:14,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2022-11-16 12:16:14,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2022-11-16 12:16:14,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2022-11-16 12:16:14,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2022-11-16 12:16:14,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2022-11-16 12:16:14,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2022-11-16 12:16:14,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2022-11-16 12:16:14,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2022-11-16 12:16:14,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:16:14,270 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 12:16:14,271 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:16:14,271 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-16 12:16:14,413 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-11-16 12:16:14,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 561 places, 624 transitions, 1360 flow [2022-11-16 12:16:20,138 INFO L130 PetriNetUnfolder]: 2659/12977 cut-off events. [2022-11-16 12:16:20,138 INFO L131 PetriNetUnfolder]: For 2144/2211 co-relation queries the response was YES. [2022-11-16 12:16:20,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15142 conditions, 12977 events. 2659/12977 cut-off events. For 2144/2211 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 127255 event pairs, 626 based on Foata normal form. 0/10438 useless extension candidates. Maximal degree in co-relation 8080. Up to 1024 conditions per place. [2022-11-16 12:16:20,622 INFO L82 GeneralOperation]: Start removeDead. Operand has 561 places, 624 transitions, 1360 flow [2022-11-16 12:16:21,024 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 561 places, 624 transitions, 1360 flow [2022-11-16 12:16:21,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:16:21,025 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;@46e8037a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:16:21,026 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2022-11-16 12:16:21,032 INFO L130 PetriNetUnfolder]: 4/83 cut-off events. [2022-11-16 12:16:21,032 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:16:21,033 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:21,033 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] [2022-11-16 12:16:21,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-16 12:16:21,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:21,033 INFO L85 PathProgramCache]: Analyzing trace with hash -556082653, now seen corresponding path program 1 times [2022-11-16 12:16:21,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:21,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043034405] [2022-11-16 12:16:21,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:21,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:21,102 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 12:16:21,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:21,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043034405] [2022-11-16 12:16:21,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043034405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:21,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:21,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:16:21,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883581620] [2022-11-16 12:16:21,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:21,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:16:21,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:21,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:16:21,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:16:21,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 624 [2022-11-16 12:16:21,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 624 transitions, 1360 flow. Second operand has 4 states, 4 states have (on average 533.75) internal successors, (2135), 4 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:21,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:21,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 624 [2022-11-16 12:16:21,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:26,804 INFO L130 PetriNetUnfolder]: 1860/11775 cut-off events. [2022-11-16 12:16:26,804 INFO L131 PetriNetUnfolder]: For 6492/7733 co-relation queries the response was YES. [2022-11-16 12:16:27,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16033 conditions, 11775 events. 1860/11775 cut-off events. For 6492/7733 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 121992 event pairs, 324 based on Foata normal form. 12814/22820 useless extension candidates. Maximal degree in co-relation 8512. Up to 2103 conditions per place. [2022-11-16 12:16:27,316 INFO L137 encePairwiseOnDemand]: 565/624 looper letters, 39 selfloop transitions, 4 changer transitions 0/575 dead transitions. [2022-11-16 12:16:27,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 575 transitions, 1348 flow [2022-11-16 12:16:27,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:16:27,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:16:27,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2759 transitions. [2022-11-16 12:16:27,322 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8842948717948718 [2022-11-16 12:16:27,322 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2759 transitions. [2022-11-16 12:16:27,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2759 transitions. [2022-11-16 12:16:27,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:27,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2759 transitions. [2022-11-16 12:16:27,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 551.8) internal successors, (2759), 5 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:27,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 624.0) internal successors, (3744), 6 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:27,336 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 624.0) internal successors, (3744), 6 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:27,337 INFO L175 Difference]: Start difference. First operand has 561 places, 624 transitions, 1360 flow. Second operand 5 states and 2759 transitions. [2022-11-16 12:16:27,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 575 transitions, 1348 flow [2022-11-16 12:16:27,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 575 transitions, 1348 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:16:27,348 INFO L231 Difference]: Finished difference. Result has 564 places, 571 transitions, 1280 flow [2022-11-16 12:16:27,350 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1280, PETRI_PLACES=564, PETRI_TRANSITIONS=571} [2022-11-16 12:16:27,350 INFO L288 CegarLoopForPetriNet]: 561 programPoint places, 3 predicate places. [2022-11-16 12:16:27,350 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 571 transitions, 1280 flow [2022-11-16 12:16:27,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 533.75) internal successors, (2135), 4 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:27,351 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:27,352 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:27,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:16:27,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-16 12:16:27,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:27,353 INFO L85 PathProgramCache]: Analyzing trace with hash -81323328, now seen corresponding path program 1 times [2022-11-16 12:16:27,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:27,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625413554] [2022-11-16 12:16:27,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:27,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:27,415 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:16:27,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:27,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625413554] [2022-11-16 12:16:27,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625413554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:27,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:27,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:16:27,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665426719] [2022-11-16 12:16:27,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:27,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:16:27,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:27,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:16:27,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:16:27,419 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 624 [2022-11-16 12:16:27,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 571 transitions, 1280 flow. Second operand has 4 states, 4 states have (on average 535.75) internal successors, (2143), 4 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:27,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:27,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 624 [2022-11-16 12:16:27,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:32,621 INFO L130 PetriNetUnfolder]: 1860/11772 cut-off events. [2022-11-16 12:16:32,621 INFO L131 PetriNetUnfolder]: For 6495/7700 co-relation queries the response was YES. [2022-11-16 12:16:33,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16054 conditions, 11772 events. 1860/11772 cut-off events. For 6495/7700 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 121546 event pairs, 324 based on Foata normal form. 27/10040 useless extension candidates. Maximal degree in co-relation 15961. Up to 2074 conditions per place. [2022-11-16 12:16:33,196 INFO L137 encePairwiseOnDemand]: 618/624 looper letters, 31 selfloop transitions, 8 changer transitions 0/571 dead transitions. [2022-11-16 12:16:33,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 571 transitions, 1356 flow [2022-11-16 12:16:33,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:16:33,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:16:33,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2697 transitions. [2022-11-16 12:16:33,201 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.864423076923077 [2022-11-16 12:16:33,202 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2697 transitions. [2022-11-16 12:16:33,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2697 transitions. [2022-11-16 12:16:33,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:33,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2697 transitions. [2022-11-16 12:16:33,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 539.4) internal successors, (2697), 5 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:33,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 624.0) internal successors, (3744), 6 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:33,216 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 624.0) internal successors, (3744), 6 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:33,217 INFO L175 Difference]: Start difference. First operand has 564 places, 571 transitions, 1280 flow. Second operand 5 states and 2697 transitions. [2022-11-16 12:16:33,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 571 transitions, 1356 flow [2022-11-16 12:16:33,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 571 transitions, 1354 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:16:33,230 INFO L231 Difference]: Finished difference. Result has 567 places, 571 transitions, 1298 flow [2022-11-16 12:16:33,231 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1298, PETRI_PLACES=567, PETRI_TRANSITIONS=571} [2022-11-16 12:16:33,232 INFO L288 CegarLoopForPetriNet]: 561 programPoint places, 6 predicate places. [2022-11-16 12:16:33,232 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 571 transitions, 1298 flow [2022-11-16 12:16:33,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 535.75) internal successors, (2143), 4 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:33,233 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:33,233 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:33,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:16:33,234 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-16 12:16:33,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:33,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1773946004, now seen corresponding path program 1 times [2022-11-16 12:16:33,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:33,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454508213] [2022-11-16 12:16:33,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:33,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:33,337 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:33,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:33,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454508213] [2022-11-16 12:16:33,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454508213] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:16:33,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880030784] [2022-11-16 12:16:33,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:33,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:33,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:33,339 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:33,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:16:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:33,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:16:33,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:33,630 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:33,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:33,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880030784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:33,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:16:33,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:16:33,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71673888] [2022-11-16 12:16:33,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:33,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:16:33,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:33,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:16:33,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:16:33,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 624 [2022-11-16 12:16:33,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 571 transitions, 1298 flow. Second operand has 5 states, 5 states have (on average 535.2) internal successors, (2676), 5 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:33,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:33,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 624 [2022-11-16 12:16:33,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:38,855 INFO L130 PetriNetUnfolder]: 1860/11769 cut-off events. [2022-11-16 12:16:38,855 INFO L131 PetriNetUnfolder]: For 6505/7674 co-relation queries the response was YES. [2022-11-16 12:16:39,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16067 conditions, 11769 events. 1860/11769 cut-off events. For 6505/7674 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 121660 event pairs, 324 based on Foata normal form. 11/10021 useless extension candidates. Maximal degree in co-relation 8538. Up to 2087 conditions per place. [2022-11-16 12:16:39,722 INFO L137 encePairwiseOnDemand]: 620/624 looper letters, 33 selfloop transitions, 5 changer transitions 0/570 dead transitions. [2022-11-16 12:16:39,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 570 transitions, 1370 flow [2022-11-16 12:16:39,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:16:39,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:16:39,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2163 transitions. [2022-11-16 12:16:39,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8665865384615384 [2022-11-16 12:16:39,728 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2163 transitions. [2022-11-16 12:16:39,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2163 transitions. [2022-11-16 12:16:39,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:39,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2163 transitions. [2022-11-16 12:16:39,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 540.75) internal successors, (2163), 4 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:39,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 624.0) internal successors, (3120), 5 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:39,742 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 624.0) internal successors, (3120), 5 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:39,742 INFO L175 Difference]: Start difference. First operand has 567 places, 571 transitions, 1298 flow. Second operand 4 states and 2163 transitions. [2022-11-16 12:16:39,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 570 transitions, 1370 flow [2022-11-16 12:16:39,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 570 transitions, 1358 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:16:39,758 INFO L231 Difference]: Finished difference. Result has 566 places, 570 transitions, 1292 flow [2022-11-16 12:16:39,759 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1292, PETRI_PLACES=566, PETRI_TRANSITIONS=570} [2022-11-16 12:16:39,760 INFO L288 CegarLoopForPetriNet]: 561 programPoint places, 5 predicate places. [2022-11-16 12:16:39,760 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 570 transitions, 1292 flow [2022-11-16 12:16:39,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 535.2) internal successors, (2676), 5 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:39,761 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:39,762 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] [2022-11-16 12:16:39,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:39,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:16:39,967 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-16 12:16:39,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:39,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1425730540, now seen corresponding path program 1 times [2022-11-16 12:16:39,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:39,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113850938] [2022-11-16 12:16:39,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:39,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:40,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:40,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:40,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113850938] [2022-11-16 12:16:40,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113850938] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:16:40,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126430698] [2022-11-16 12:16:40,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:40,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:40,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:40,072 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:40,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:16:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:40,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:16:40,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:40,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:40,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:16:40,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:40,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126430698] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:16:40,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:16:40,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:16:40,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465982088] [2022-11-16 12:16:40,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:16:40,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:16:40,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:40,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:16:40,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:16:40,413 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 624 [2022-11-16 12:16:40,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 570 transitions, 1292 flow. Second operand has 10 states, 10 states have (on average 535.0) internal successors, (5350), 10 states have internal predecessors, (5350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:40,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:40,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 624 [2022-11-16 12:16:40,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:45,598 INFO L130 PetriNetUnfolder]: 1826/10973 cut-off events. [2022-11-16 12:16:45,598 INFO L131 PetriNetUnfolder]: For 6348/6947 co-relation queries the response was YES. [2022-11-16 12:16:46,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15220 conditions, 10973 events. 1826/10973 cut-off events. For 6348/6947 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 111439 event pairs, 410 based on Foata normal form. 10/9338 useless extension candidates. Maximal degree in co-relation 8035. Up to 2064 conditions per place. [2022-11-16 12:16:46,181 INFO L137 encePairwiseOnDemand]: 618/624 looper letters, 40 selfloop transitions, 9 changer transitions 0/581 dead transitions. [2022-11-16 12:16:46,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 581 transitions, 1428 flow [2022-11-16 12:16:46,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:16:46,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:16:46,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4839 transitions. [2022-11-16 12:16:46,192 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8616452991452992 [2022-11-16 12:16:46,192 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4839 transitions. [2022-11-16 12:16:46,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4839 transitions. [2022-11-16 12:16:46,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:46,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4839 transitions. [2022-11-16 12:16:46,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 537.6666666666666) internal successors, (4839), 9 states have internal predecessors, (4839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:46,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 624.0) internal successors, (6240), 10 states have internal predecessors, (6240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:46,216 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 624.0) internal successors, (6240), 10 states have internal predecessors, (6240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:46,216 INFO L175 Difference]: Start difference. First operand has 566 places, 570 transitions, 1292 flow. Second operand 9 states and 4839 transitions. [2022-11-16 12:16:46,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 581 transitions, 1428 flow [2022-11-16 12:16:46,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 581 transitions, 1414 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:16:46,229 INFO L231 Difference]: Finished difference. Result has 575 places, 574 transitions, 1338 flow [2022-11-16 12:16:46,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1338, PETRI_PLACES=575, PETRI_TRANSITIONS=574} [2022-11-16 12:16:46,231 INFO L288 CegarLoopForPetriNet]: 561 programPoint places, 14 predicate places. [2022-11-16 12:16:46,231 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 574 transitions, 1338 flow [2022-11-16 12:16:46,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 535.0) internal successors, (5350), 10 states have internal predecessors, (5350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:46,233 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:46,233 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:46,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-16 12:16:46,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ee554f-32f7-497f-945e-2b9b4f5b2ed9/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:46,438 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-16 12:16:46,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:46,439 INFO L85 PathProgramCache]: Analyzing trace with hash -755312303, now seen corresponding path program 1 times [2022-11-16 12:16:46,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:46,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444457672] [2022-11-16 12:16:46,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:46,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 12:16:46,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:46,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444457672] [2022-11-16 12:16:46,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444457672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:46,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:46,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:16:46,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917519902] [2022-11-16 12:16:46,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:46,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:16:46,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:46,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:16:46,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:16:46,536 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 624 [2022-11-16 12:16:46,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 574 transitions, 1338 flow. Second operand has 4 states, 4 states have (on average 534.5) internal successors, (2138), 4 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:46,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:46,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 624 [2022-11-16 12:16:46,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:52,282 INFO L130 PetriNetUnfolder]: 1824/10965 cut-off events. [2022-11-16 12:16:52,282 INFO L131 PetriNetUnfolder]: For 6620/8754 co-relation queries the response was YES. [2022-11-16 12:16:52,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15283 conditions, 10965 events. 1824/10965 cut-off events. For 6620/8754 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 112090 event pairs, 424 based on Foata normal form. 18/9347 useless extension candidates. Maximal degree in co-relation 8056. Up to 2128 conditions per place. [2022-11-16 12:16:52,884 INFO L137 encePairwiseOnDemand]: 617/624 looper letters, 39 selfloop transitions, 4 changer transitions 0/581 dead transitions. [2022-11-16 12:16:52,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 581 transitions, 1438 flow [2022-11-16 12:16:52,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:16:52,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:16:52,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2706 transitions. [2022-11-16 12:16:52,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8673076923076923 [2022-11-16 12:16:52,893 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2706 transitions. [2022-11-16 12:16:52,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2706 transitions. [2022-11-16 12:16:52,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:52,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2706 transitions. [2022-11-16 12:16:52,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 541.2) internal successors, (2706), 5 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:52,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 624.0) internal successors, (3744), 6 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:52,907 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 624.0) internal successors, (3744), 6 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:52,907 INFO L175 Difference]: Start difference. First operand has 575 places, 574 transitions, 1338 flow. Second operand 5 states and 2706 transitions. [2022-11-16 12:16:52,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 581 transitions, 1438 flow [2022-11-16 12:16:52,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 581 transitions, 1422 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 12:16:52,922 INFO L231 Difference]: Finished difference. Result has 578 places, 577 transitions, 1354 flow [2022-11-16 12:16:52,924 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1354, PETRI_PLACES=578, PETRI_TRANSITIONS=577} [2022-11-16 12:16:52,925 INFO L288 CegarLoopForPetriNet]: 561 programPoint places, 17 predicate places. [2022-11-16 12:16:52,925 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 577 transitions, 1354 flow [2022-11-16 12:16:52,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 534.5) internal successors, (2138), 4 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:52,926 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:52,926 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:52,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:16:52,927 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-16 12:16:52,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:52,927 INFO L85 PathProgramCache]: Analyzing trace with hash -931431635, now seen corresponding path program 1 times [2022-11-16 12:16:52,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:52,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819883445] [2022-11-16 12:16:52,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:52,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:16:52,962 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:16:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:16:53,011 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:16:53,011 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:16:53,011 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 30 remaining) [2022-11-16 12:16:53,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 30 remaining) [2022-11-16 12:16:53,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 30 remaining) [2022-11-16 12:16:53,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 30 remaining) [2022-11-16 12:16:53,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 30 remaining) [2022-11-16 12:16:53,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 30 remaining) [2022-11-16 12:16:53,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 30 remaining) [2022-11-16 12:16:53,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 30 remaining) [2022-11-16 12:16:53,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 30 remaining) [2022-11-16 12:16:53,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 30 remaining) [2022-11-16 12:16:53,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 30 remaining) [2022-11-16 12:16:53,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 30 remaining) [2022-11-16 12:16:53,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 30 remaining) [2022-11-16 12:16:53,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 30 remaining) [2022-11-16 12:16:53,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 30 remaining) [2022-11-16 12:16:53,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 30 remaining) [2022-11-16 12:16:53,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 30 remaining) [2022-11-16 12:16:53,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 30 remaining) [2022-11-16 12:16:53,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 30 remaining) [2022-11-16 12:16:53,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 30 remaining) [2022-11-16 12:16:53,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 30 remaining) [2022-11-16 12:16:53,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 30 remaining) [2022-11-16 12:16:53,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 30 remaining) [2022-11-16 12:16:53,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 30 remaining) [2022-11-16 12:16:53,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 30 remaining) [2022-11-16 12:16:53,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 30 remaining) [2022-11-16 12:16:53,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 30 remaining) [2022-11-16 12:16:53,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 30 remaining) [2022-11-16 12:16:53,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 30 remaining) [2022-11-16 12:16:53,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 30 remaining) [2022-11-16 12:16:53,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:16:53,021 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-16 12:16:53,021 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:16:53,022 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-16 12:16:53,125 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-11-16 12:16:53,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 673 places, 751 transitions, 1652 flow