./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 8393723b 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_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/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_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro --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-8393723 [2022-11-18 21:09:53,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:09:53,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:09:53,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:09:53,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:09:53,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:09:53,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:09:53,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:09:53,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:09:53,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:09:53,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:09:53,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:09:53,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:09:53,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:09:53,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:09:53,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:09:53,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:09:53,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:09:53,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:09:53,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:09:53,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:09:53,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:09:53,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:09:53,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:09:53,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:09:53,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:09:53,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:09:53,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:09:53,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:09:53,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:09:53,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:09:53,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:09:53,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:09:53,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:09:53,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:09:53,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:09:53,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:09:53,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:09:53,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:09:53,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:09:53,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:09:53,538 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 21:09:53,573 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:09:53,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:09:53,574 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:09:53,574 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:09:53,575 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:09:53,576 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:09:53,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:09:53,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:09:53,577 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:09:53,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:09:53,577 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:09:53,578 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 21:09:53,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:09:53,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:09:53,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:09:53,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:09:53,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:09:53,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:09:53,579 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 21:09:53,580 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:09:53,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:09:53,580 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:09:53,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:09:53,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:09:53,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:09:53,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:09:53,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:09:53,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:09:53,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:09:53,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:09:53,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:09:53,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:09:53,583 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:09:53,583 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:09:53,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:09:53,584 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_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2022-11-18 21:09:53,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:09:53,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:09:53,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:09:53,915 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:09:53,915 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:09:53,917 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2022-11-18 21:09:53,997 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/data/1920e4ec9/c976adfb1eed47f1b8fe63b506c0b1e6/FLAGdf255bf11 [2022-11-18 21:09:54,603 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:09:54,604 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2022-11-18 21:09:54,628 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/data/1920e4ec9/c976adfb1eed47f1b8fe63b506c0b1e6/FLAGdf255bf11 [2022-11-18 21:09:54,821 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/data/1920e4ec9/c976adfb1eed47f1b8fe63b506c0b1e6 [2022-11-18 21:09:54,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:09:54,825 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:09:54,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:09:54,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:09:54,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:09:54,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:09:54" (1/1) ... [2022-11-18 21:09:54,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56405f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:54, skipping insertion in model container [2022-11-18 21:09:54,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:09:54" (1/1) ... [2022-11-18 21:09:54,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:09:54,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:09:55,425 WARN L234 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_6dde6954-9cbb-488f-b921-beeb8404af19/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2022-11-18 21:09:55,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:09:55,500 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:09:55,564 WARN L234 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_6dde6954-9cbb-488f-b921-beeb8404af19/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2022-11-18 21:09:55,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:09:55,629 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:09:55,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:55 WrapperNode [2022-11-18 21:09:55,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:09:55,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:09:55,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:09:55,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:09:55,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:55" (1/1) ... [2022-11-18 21:09:55,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:55" (1/1) ... [2022-11-18 21:09:55,697 INFO L138 Inliner]: procedures = 278, calls = 54, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 216 [2022-11-18 21:09:55,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:09:55,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:09:55,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:09:55,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:09:55,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:55" (1/1) ... [2022-11-18 21:09:55,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:55" (1/1) ... [2022-11-18 21:09:55,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:55" (1/1) ... [2022-11-18 21:09:55,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:55" (1/1) ... [2022-11-18 21:09:55,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:55" (1/1) ... [2022-11-18 21:09:55,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:55" (1/1) ... [2022-11-18 21:09:55,734 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:55" (1/1) ... [2022-11-18 21:09:55,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:55" (1/1) ... [2022-11-18 21:09:55,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:09:55,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:09:55,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:09:55,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:09:55,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:55" (1/1) ... [2022-11-18 21:09:55,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:09:55,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:55,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:09:55,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:09:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:09:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 21:09:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-18 21:09:55,863 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-18 21:09:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:09:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:09:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-18 21:09:55,864 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-18 21:09:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:09:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 21:09:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 21:09:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:09:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 21:09:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:09:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:09:55,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:09:55,866 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 21:09:56,113 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:09:56,115 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:09:56,583 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:09:56,593 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:09:56,593 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-18 21:09:56,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:56 BoogieIcfgContainer [2022-11-18 21:09:56,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:09:56,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:09:56,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:09:56,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:09:56,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:09:54" (1/3) ... [2022-11-18 21:09:56,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145bc58b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:09:56, skipping insertion in model container [2022-11-18 21:09:56,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:55" (2/3) ... [2022-11-18 21:09:56,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145bc58b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:09:56, skipping insertion in model container [2022-11-18 21:09:56,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:56" (3/3) ... [2022-11-18 21:09:56,633 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2022-11-18 21:09:56,643 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 21:09:56,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:09:56,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-18 21:09:56,654 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 21:09:56,799 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 21:09:56,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 243 transitions, 508 flow [2022-11-18 21:09:57,054 INFO L130 PetriNetUnfolder]: 52/464 cut-off events. [2022-11-18 21:09:57,054 INFO L131 PetriNetUnfolder]: For 8/15 co-relation queries the response was YES. [2022-11-18 21:09:57,068 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. [2022-11-18 21:09:57,068 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 243 transitions, 508 flow [2022-11-18 21:09:57,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 243 transitions, 508 flow [2022-11-18 21:09:57,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:09:57,115 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;@7ef289ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:09:57,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-18 21:09:57,139 INFO L130 PetriNetUnfolder]: 4/79 cut-off events. [2022-11-18 21:09:57,139 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 21:09:57,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:57,140 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] [2022-11-18 21:09:57,141 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)] === [2022-11-18 21:09:57,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:57,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1962439189, now seen corresponding path program 1 times [2022-11-18 21:09:57,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:57,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633445241] [2022-11-18 21:09:57,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:57,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:57,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:57,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633445241] [2022-11-18 21:09:57,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633445241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:57,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:57,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:09:57,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80776256] [2022-11-18 21:09:57,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:57,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:09:57,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:57,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:09:57,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:09:57,711 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 243 [2022-11-18 21:09:57,716 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) [2022-11-18 21:09:57,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:57,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 243 [2022-11-18 21:09:57,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:57,878 INFO L130 PetriNetUnfolder]: 9/315 cut-off events. [2022-11-18 21:09:57,878 INFO L131 PetriNetUnfolder]: For 27/61 co-relation queries the response was YES. [2022-11-18 21:09:57,882 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. [2022-11-18 21:09:57,884 INFO L137 encePairwiseOnDemand]: 220/243 looper letters, 14 selfloop transitions, 4 changer transitions 0/226 dead transitions. [2022-11-18 21:09:57,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 226 transitions, 510 flow [2022-11-18 21:09:57,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:09:57,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:09:57,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1078 transitions. [2022-11-18 21:09:57,913 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8872427983539095 [2022-11-18 21:09:57,913 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1078 transitions. [2022-11-18 21:09:57,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1078 transitions. [2022-11-18 21:09:57,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:57,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1078 transitions. [2022-11-18 21:09:57,931 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) [2022-11-18 21:09:57,947 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) [2022-11-18 21:09:57,948 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) [2022-11-18 21:09:57,950 INFO L175 Difference]: Start difference. First operand has 225 places, 243 transitions, 508 flow. Second operand 5 states and 1078 transitions. [2022-11-18 21:09:57,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 226 transitions, 510 flow [2022-11-18 21:09:57,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 226 transitions, 510 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 21:09:57,966 INFO L231 Difference]: Finished difference. Result has 227 places, 224 transitions, 482 flow [2022-11-18 21:09:57,968 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} [2022-11-18 21:09:57,975 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 2 predicate places. [2022-11-18 21:09:57,975 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 224 transitions, 482 flow [2022-11-18 21:09:57,976 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) [2022-11-18 21:09:57,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:57,978 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] [2022-11-18 21:09:57,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:09:57,978 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)] === [2022-11-18 21:09:57,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:57,980 INFO L85 PathProgramCache]: Analyzing trace with hash 321938608, now seen corresponding path program 1 times [2022-11-18 21:09:57,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:57,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454210310] [2022-11-18 21:09:57,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:57,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:09:58,066 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 21:09:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:09:58,151 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 21:09:58,154 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 21:09:58,156 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-11-18 21:09:58,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-18 21:09:58,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-18 21:09:58,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-18 21:09:58,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-18 21:09:58,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-18 21:09:58,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-18 21:09:58,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-18 21:09:58,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-18 21:09:58,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-18 21:09:58,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-18 21:09:58,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-18 21:09:58,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-18 21:09:58,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 18 remaining) [2022-11-18 21:09:58,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-18 21:09:58,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-18 21:09:58,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-18 21:09:58,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-18 21:09:58,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 21:09:58,173 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-18 21:09:58,177 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 21:09:58,177 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 21:09:58,314 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-18 21:09:58,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 337 places, 370 transitions, 788 flow [2022-11-18 21:09:58,781 INFO L130 PetriNetUnfolder]: 191/1413 cut-off events. [2022-11-18 21:09:58,781 INFO L131 PetriNetUnfolder]: For 72/95 co-relation queries the response was YES. [2022-11-18 21:09:58,802 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. [2022-11-18 21:09:58,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 337 places, 370 transitions, 788 flow [2022-11-18 21:09:58,822 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 337 places, 370 transitions, 788 flow [2022-11-18 21:09:58,824 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:09:58,830 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;@7ef289ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:09:58,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-18 21:09:58,840 INFO L130 PetriNetUnfolder]: 4/80 cut-off events. [2022-11-18 21:09:58,841 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 21:09:58,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:58,841 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] [2022-11-18 21:09:58,841 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)] === [2022-11-18 21:09:58,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:58,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1481137324, now seen corresponding path program 1 times [2022-11-18 21:09:58,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:58,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667840047] [2022-11-18 21:09:58,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:58,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:58,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:58,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667840047] [2022-11-18 21:09:58,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667840047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:58,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:58,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:09:58,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698339510] [2022-11-18 21:09:58,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:58,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:09:58,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:58,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:09:58,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:09:58,958 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 370 [2022-11-18 21:09:58,959 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) [2022-11-18 21:09:58,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:58,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 370 [2022-11-18 21:09:58,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:59,466 INFO L130 PetriNetUnfolder]: 66/1085 cut-off events. [2022-11-18 21:09:59,466 INFO L131 PetriNetUnfolder]: For 245/480 co-relation queries the response was YES. [2022-11-18 21:09:59,483 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. [2022-11-18 21:09:59,492 INFO L137 encePairwiseOnDemand]: 335/370 looper letters, 27 selfloop transitions, 4 changer transitions 0/347 dead transitions. [2022-11-18 21:09:59,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 347 transitions, 804 flow [2022-11-18 21:09:59,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:09:59,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:09:59,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1643 transitions. [2022-11-18 21:09:59,497 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8881081081081081 [2022-11-18 21:09:59,497 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1643 transitions. [2022-11-18 21:09:59,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1643 transitions. [2022-11-18 21:09:59,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:59,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1643 transitions. [2022-11-18 21:09:59,503 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) [2022-11-18 21:09:59,507 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) [2022-11-18 21:09:59,509 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) [2022-11-18 21:09:59,509 INFO L175 Difference]: Start difference. First operand has 337 places, 370 transitions, 788 flow. Second operand 5 states and 1643 transitions. [2022-11-18 21:09:59,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 347 transitions, 804 flow [2022-11-18 21:09:59,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 347 transitions, 804 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 21:09:59,518 INFO L231 Difference]: Finished difference. Result has 342 places, 343 transitions, 760 flow [2022-11-18 21:09:59,519 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} [2022-11-18 21:09:59,520 INFO L288 CegarLoopForPetriNet]: 337 programPoint places, 5 predicate places. [2022-11-18 21:09:59,520 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 343 transitions, 760 flow [2022-11-18 21:09:59,521 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) [2022-11-18 21:09:59,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:59,522 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] [2022-11-18 21:09:59,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 21:09:59,522 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)] === [2022-11-18 21:09:59,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:59,523 INFO L85 PathProgramCache]: Analyzing trace with hash 19348671, now seen corresponding path program 1 times [2022-11-18 21:09:59,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:59,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119715799] [2022-11-18 21:09:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:59,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:09:59,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:59,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119715799] [2022-11-18 21:09:59,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119715799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:59,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:59,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:09:59,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590380032] [2022-11-18 21:09:59,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:59,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:09:59,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:59,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:09:59,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:09:59,628 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 370 [2022-11-18 21:09:59,656 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) [2022-11-18 21:09:59,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:59,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 370 [2022-11-18 21:09:59,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:00,146 INFO L130 PetriNetUnfolder]: 66/1084 cut-off events. [2022-11-18 21:10:00,147 INFO L131 PetriNetUnfolder]: For 251/476 co-relation queries the response was YES. [2022-11-18 21:10:00,162 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. [2022-11-18 21:10:00,171 INFO L137 encePairwiseOnDemand]: 364/370 looper letters, 19 selfloop transitions, 8 changer transitions 0/343 dead transitions. [2022-11-18 21:10:00,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 343 transitions, 812 flow [2022-11-18 21:10:00,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:10:00,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:10:00,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1605 transitions. [2022-11-18 21:10:00,176 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8675675675675676 [2022-11-18 21:10:00,176 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1605 transitions. [2022-11-18 21:10:00,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1605 transitions. [2022-11-18 21:10:00,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:00,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1605 transitions. [2022-11-18 21:10:00,187 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) [2022-11-18 21:10:00,192 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) [2022-11-18 21:10:00,193 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) [2022-11-18 21:10:00,194 INFO L175 Difference]: Start difference. First operand has 342 places, 343 transitions, 760 flow. Second operand 5 states and 1605 transitions. [2022-11-18 21:10:00,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 343 transitions, 812 flow [2022-11-18 21:10:00,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 343 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:10:00,202 INFO L231 Difference]: Finished difference. Result has 345 places, 343 transitions, 778 flow [2022-11-18 21:10:00,203 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} [2022-11-18 21:10:00,206 INFO L288 CegarLoopForPetriNet]: 337 programPoint places, 8 predicate places. [2022-11-18 21:10:00,207 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 343 transitions, 778 flow [2022-11-18 21:10:00,213 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) [2022-11-18 21:10:00,213 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:00,214 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:00,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 21:10:00,214 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)] === [2022-11-18 21:10:00,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:00,215 INFO L85 PathProgramCache]: Analyzing trace with hash 599809560, now seen corresponding path program 1 times [2022-11-18 21:10:00,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:00,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256620720] [2022-11-18 21:10:00,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:00,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:00,461 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:00,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:00,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256620720] [2022-11-18 21:10:00,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256620720] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:00,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075029627] [2022-11-18 21:10:00,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:00,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:00,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:00,466 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:00,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:10:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:00,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 21:10:00,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:00,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:10:00,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075029627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:00,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:10:00,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 21:10:00,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865901839] [2022-11-18 21:10:00,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:00,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:10:00,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:00,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:10:00,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:10:00,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 370 [2022-11-18 21:10:00,733 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) [2022-11-18 21:10:00,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:00,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 370 [2022-11-18 21:10:00,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:01,131 INFO L130 PetriNetUnfolder]: 66/1083 cut-off events. [2022-11-18 21:10:01,132 INFO L131 PetriNetUnfolder]: For 258/473 co-relation queries the response was YES. [2022-11-18 21:10:01,152 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. [2022-11-18 21:10:01,170 INFO L137 encePairwiseOnDemand]: 366/370 looper letters, 21 selfloop transitions, 5 changer transitions 0/342 dead transitions. [2022-11-18 21:10:01,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 342 transitions, 826 flow [2022-11-18 21:10:01,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:10:01,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:10:01,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1287 transitions. [2022-11-18 21:10:01,174 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8695945945945946 [2022-11-18 21:10:01,174 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1287 transitions. [2022-11-18 21:10:01,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1287 transitions. [2022-11-18 21:10:01,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:01,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1287 transitions. [2022-11-18 21:10:01,179 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) [2022-11-18 21:10:01,183 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) [2022-11-18 21:10:01,184 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) [2022-11-18 21:10:01,185 INFO L175 Difference]: Start difference. First operand has 345 places, 343 transitions, 778 flow. Second operand 4 states and 1287 transitions. [2022-11-18 21:10:01,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 342 transitions, 826 flow [2022-11-18 21:10:01,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 342 transitions, 814 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 21:10:01,195 INFO L231 Difference]: Finished difference. Result has 344 places, 342 transitions, 772 flow [2022-11-18 21:10:01,196 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} [2022-11-18 21:10:01,198 INFO L288 CegarLoopForPetriNet]: 337 programPoint places, 7 predicate places. [2022-11-18 21:10:01,198 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 342 transitions, 772 flow [2022-11-18 21:10:01,199 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) [2022-11-18 21:10:01,199 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:01,200 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] [2022-11-18 21:10:01,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 21:10:01,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:01,406 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)] === [2022-11-18 21:10:01,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:01,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1010029398, now seen corresponding path program 1 times [2022-11-18 21:10:01,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:01,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556247868] [2022-11-18 21:10:01,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:01,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:01,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:01,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556247868] [2022-11-18 21:10:01,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556247868] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:01,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167970015] [2022-11-18 21:10:01,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:01,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:01,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:01,587 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:01,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:10:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:01,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 21:10:01,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:01,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:01,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:10:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:01,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167970015] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:10:01,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:10:01,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 21:10:01,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736806450] [2022-11-18 21:10:01,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:10:01,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 21:10:01,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:01,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 21:10:01,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:10:01,920 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 370 [2022-11-18 21:10:01,924 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) [2022-11-18 21:10:01,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:01,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 370 [2022-11-18 21:10:01,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:02,022 INFO L130 PetriNetUnfolder]: 0/131 cut-off events. [2022-11-18 21:10:02,022 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-18 21:10:02,023 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. [2022-11-18 21:10:02,023 INFO L137 encePairwiseOnDemand]: 365/370 looper letters, 13 selfloop transitions, 7 changer transitions 0/125 dead transitions. [2022-11-18 21:10:02,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 125 transitions, 342 flow [2022-11-18 21:10:02,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:10:02,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 21:10:02,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2866 transitions. [2022-11-18 21:10:02,030 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8606606606606607 [2022-11-18 21:10:02,030 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2866 transitions. [2022-11-18 21:10:02,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2866 transitions. [2022-11-18 21:10:02,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:02,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2866 transitions. [2022-11-18 21:10:02,039 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) [2022-11-18 21:10:02,045 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) [2022-11-18 21:10:02,047 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) [2022-11-18 21:10:02,047 INFO L175 Difference]: Start difference. First operand has 344 places, 342 transitions, 772 flow. Second operand 9 states and 2866 transitions. [2022-11-18 21:10:02,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 125 transitions, 342 flow [2022-11-18 21:10:02,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 125 transitions, 330 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-18 21:10:02,050 INFO L231 Difference]: Finished difference. Result has 139 places, 120 transitions, 292 flow [2022-11-18 21:10:02,051 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} [2022-11-18 21:10:02,051 INFO L288 CegarLoopForPetriNet]: 337 programPoint places, -198 predicate places. [2022-11-18 21:10:02,051 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 120 transitions, 292 flow [2022-11-18 21:10:02,053 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) [2022-11-18 21:10:02,053 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:02,053 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] [2022-11-18 21:10:02,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 21:10:02,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:02,259 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)] === [2022-11-18 21:10:02,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:02,260 INFO L85 PathProgramCache]: Analyzing trace with hash 771340285, now seen corresponding path program 1 times [2022-11-18 21:10:02,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:02,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141602360] [2022-11-18 21:10:02,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:02,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:10:02,286 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 21:10:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:10:02,313 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 21:10:02,315 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 21:10:02,316 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-18 21:10:02,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2022-11-18 21:10:02,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2022-11-18 21:10:02,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2022-11-18 21:10:02,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2022-11-18 21:10:02,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2022-11-18 21:10:02,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2022-11-18 21:10:02,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2022-11-18 21:10:02,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2022-11-18 21:10:02,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2022-11-18 21:10:02,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2022-11-18 21:10:02,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2022-11-18 21:10:02,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2022-11-18 21:10:02,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 22 remaining) [2022-11-18 21:10:02,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2022-11-18 21:10:02,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2022-11-18 21:10:02,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2022-11-18 21:10:02,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2022-11-18 21:10:02,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2022-11-18 21:10:02,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2022-11-18 21:10:02,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2022-11-18 21:10:02,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2022-11-18 21:10:02,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 21:10:02,327 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 21:10:02,328 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 21:10:02,328 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 21:10:02,418 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-18 21:10:02,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 449 places, 497 transitions, 1072 flow [2022-11-18 21:10:03,952 INFO L130 PetriNetUnfolder]: 664/4036 cut-off events. [2022-11-18 21:10:03,953 INFO L131 PetriNetUnfolder]: For 419/462 co-relation queries the response was YES. [2022-11-18 21:10:04,075 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. [2022-11-18 21:10:04,075 INFO L82 GeneralOperation]: Start removeDead. Operand has 449 places, 497 transitions, 1072 flow [2022-11-18 21:10:04,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 449 places, 497 transitions, 1072 flow [2022-11-18 21:10:04,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:10:04,139 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;@7ef289ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:10:04,139 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-18 21:10:04,146 INFO L130 PetriNetUnfolder]: 4/84 cut-off events. [2022-11-18 21:10:04,147 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 21:10:04,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:04,147 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] [2022-11-18 21:10:04,147 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)] === [2022-11-18 21:10:04,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:04,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1012351812, now seen corresponding path program 1 times [2022-11-18 21:10:04,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:04,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013685418] [2022-11-18 21:10:04,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:04,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:04,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:04,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013685418] [2022-11-18 21:10:04,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013685418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:04,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:04,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:10:04,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184215214] [2022-11-18 21:10:04,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:04,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:10:04,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:04,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:10:04,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:10:04,223 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 497 [2022-11-18 21:10:04,225 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) [2022-11-18 21:10:04,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:04,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 497 [2022-11-18 21:10:04,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:06,011 INFO L130 PetriNetUnfolder]: 359/3429 cut-off events. [2022-11-18 21:10:06,011 INFO L131 PetriNetUnfolder]: For 1259/1778 co-relation queries the response was YES. [2022-11-18 21:10:06,098 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. [2022-11-18 21:10:06,136 INFO L137 encePairwiseOnDemand]: 450/497 looper letters, 33 selfloop transitions, 4 changer transitions 0/461 dead transitions. [2022-11-18 21:10:06,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 461 transitions, 1074 flow [2022-11-18 21:10:06,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:10:06,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:10:06,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2201 transitions. [2022-11-18 21:10:06,142 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8857142857142857 [2022-11-18 21:10:06,142 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2201 transitions. [2022-11-18 21:10:06,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2201 transitions. [2022-11-18 21:10:06,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:06,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2201 transitions. [2022-11-18 21:10:06,151 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) [2022-11-18 21:10:06,156 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) [2022-11-18 21:10:06,157 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) [2022-11-18 21:10:06,158 INFO L175 Difference]: Start difference. First operand has 449 places, 497 transitions, 1072 flow. Second operand 5 states and 2201 transitions. [2022-11-18 21:10:06,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 461 transitions, 1074 flow [2022-11-18 21:10:06,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 461 transitions, 1074 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 21:10:06,170 INFO L231 Difference]: Finished difference. Result has 453 places, 457 transitions, 1018 flow [2022-11-18 21:10:06,171 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} [2022-11-18 21:10:06,172 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 4 predicate places. [2022-11-18 21:10:06,172 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 457 transitions, 1018 flow [2022-11-18 21:10:06,173 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) [2022-11-18 21:10:06,173 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:06,174 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] [2022-11-18 21:10:06,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 21:10:06,174 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)] === [2022-11-18 21:10:06,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:06,175 INFO L85 PathProgramCache]: Analyzing trace with hash -762281632, now seen corresponding path program 1 times [2022-11-18 21:10:06,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:06,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731283545] [2022-11-18 21:10:06,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:06,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:10:06,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:06,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731283545] [2022-11-18 21:10:06,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731283545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:06,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:06,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:10:06,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292720305] [2022-11-18 21:10:06,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:06,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:10:06,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:06,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:10:06,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:10:06,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 497 [2022-11-18 21:10:06,261 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) [2022-11-18 21:10:06,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:06,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 497 [2022-11-18 21:10:06,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:07,872 INFO L130 PetriNetUnfolder]: 359/3427 cut-off events. [2022-11-18 21:10:07,872 INFO L131 PetriNetUnfolder]: For 1266/1768 co-relation queries the response was YES. [2022-11-18 21:10:07,938 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. [2022-11-18 21:10:07,975 INFO L137 encePairwiseOnDemand]: 491/497 looper letters, 25 selfloop transitions, 8 changer transitions 0/457 dead transitions. [2022-11-18 21:10:07,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 457 transitions, 1082 flow [2022-11-18 21:10:07,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:10:07,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:10:07,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2151 transitions. [2022-11-18 21:10:07,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8655935613682093 [2022-11-18 21:10:07,981 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2151 transitions. [2022-11-18 21:10:07,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2151 transitions. [2022-11-18 21:10:07,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:07,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2151 transitions. [2022-11-18 21:10:07,987 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) [2022-11-18 21:10:08,008 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) [2022-11-18 21:10:08,009 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) [2022-11-18 21:10:08,009 INFO L175 Difference]: Start difference. First operand has 453 places, 457 transitions, 1018 flow. Second operand 5 states and 2151 transitions. [2022-11-18 21:10:08,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 457 transitions, 1082 flow [2022-11-18 21:10:08,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 457 transitions, 1080 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:10:08,019 INFO L231 Difference]: Finished difference. Result has 456 places, 457 transitions, 1036 flow [2022-11-18 21:10:08,020 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} [2022-11-18 21:10:08,022 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 7 predicate places. [2022-11-18 21:10:08,022 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 457 transitions, 1036 flow [2022-11-18 21:10:08,023 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) [2022-11-18 21:10:08,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:08,024 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] [2022-11-18 21:10:08,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 21:10:08,024 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)] === [2022-11-18 21:10:08,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:08,025 INFO L85 PathProgramCache]: Analyzing trace with hash 2139074438, now seen corresponding path program 1 times [2022-11-18 21:10:08,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:08,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285164582] [2022-11-18 21:10:08,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:08,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:08,152 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:08,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:08,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285164582] [2022-11-18 21:10:08,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285164582] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:08,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939023325] [2022-11-18 21:10:08,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:08,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:08,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:08,156 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:08,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:10:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:08,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 21:10:08,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:08,409 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:08,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:10:08,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939023325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:08,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:10:08,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 21:10:08,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836316716] [2022-11-18 21:10:08,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:08,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:10:08,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:08,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:10:08,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:10:08,415 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 497 [2022-11-18 21:10:08,417 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) [2022-11-18 21:10:08,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:08,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 497 [2022-11-18 21:10:08,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:10,002 INFO L130 PetriNetUnfolder]: 359/3425 cut-off events. [2022-11-18 21:10:10,002 INFO L131 PetriNetUnfolder]: For 1277/1762 co-relation queries the response was YES. [2022-11-18 21:10:10,075 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. [2022-11-18 21:10:10,123 INFO L137 encePairwiseOnDemand]: 493/497 looper letters, 27 selfloop transitions, 5 changer transitions 0/456 dead transitions. [2022-11-18 21:10:10,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 456 transitions, 1096 flow [2022-11-18 21:10:10,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:10:10,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:10:10,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1725 transitions. [2022-11-18 21:10:10,128 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8677062374245473 [2022-11-18 21:10:10,129 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1725 transitions. [2022-11-18 21:10:10,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1725 transitions. [2022-11-18 21:10:10,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:10,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1725 transitions. [2022-11-18 21:10:10,136 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) [2022-11-18 21:10:10,140 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) [2022-11-18 21:10:10,141 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) [2022-11-18 21:10:10,142 INFO L175 Difference]: Start difference. First operand has 456 places, 457 transitions, 1036 flow. Second operand 4 states and 1725 transitions. [2022-11-18 21:10:10,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 456 transitions, 1096 flow [2022-11-18 21:10:10,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 456 transitions, 1084 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 21:10:10,153 INFO L231 Difference]: Finished difference. Result has 455 places, 456 transitions, 1030 flow [2022-11-18 21:10:10,154 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} [2022-11-18 21:10:10,157 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 6 predicate places. [2022-11-18 21:10:10,158 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 456 transitions, 1030 flow [2022-11-18 21:10:10,160 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) [2022-11-18 21:10:10,161 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:10,161 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] [2022-11-18 21:10:10,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 21:10:10,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:10,372 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)] === [2022-11-18 21:10:10,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:10,372 INFO L85 PathProgramCache]: Analyzing trace with hash 440800907, now seen corresponding path program 1 times [2022-11-18 21:10:10,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:10,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646957762] [2022-11-18 21:10:10,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:10,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:10,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:10,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:10,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646957762] [2022-11-18 21:10:10,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646957762] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:10,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105045711] [2022-11-18 21:10:10,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:10,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:10,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:10,503 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:10,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:10:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:10,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 21:10:10,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:10,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:10:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:10,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105045711] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:10:10,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:10:10,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 21:10:10,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099229821] [2022-11-18 21:10:10,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:10:10,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 21:10:10,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:10,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 21:10:10,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:10:10,798 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 497 [2022-11-18 21:10:10,803 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) [2022-11-18 21:10:10,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:10,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 497 [2022-11-18 21:10:10,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:11,936 INFO L130 PetriNetUnfolder]: 333/2823 cut-off events. [2022-11-18 21:10:11,937 INFO L131 PetriNetUnfolder]: For 1233/1407 co-relation queries the response was YES. [2022-11-18 21:10:12,011 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. [2022-11-18 21:10:12,052 INFO L137 encePairwiseOnDemand]: 491/497 looper letters, 34 selfloop transitions, 9 changer transitions 0/467 dead transitions. [2022-11-18 21:10:12,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 467 transitions, 1154 flow [2022-11-18 21:10:12,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:10:12,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 21:10:12,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3861 transitions. [2022-11-18 21:10:12,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8631790744466801 [2022-11-18 21:10:12,062 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3861 transitions. [2022-11-18 21:10:12,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3861 transitions. [2022-11-18 21:10:12,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:12,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3861 transitions. [2022-11-18 21:10:12,076 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) [2022-11-18 21:10:12,085 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) [2022-11-18 21:10:12,088 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) [2022-11-18 21:10:12,088 INFO L175 Difference]: Start difference. First operand has 455 places, 456 transitions, 1030 flow. Second operand 9 states and 3861 transitions. [2022-11-18 21:10:12,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 467 transitions, 1154 flow [2022-11-18 21:10:12,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 467 transitions, 1140 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 21:10:12,101 INFO L231 Difference]: Finished difference. Result has 464 places, 460 transitions, 1076 flow [2022-11-18 21:10:12,102 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} [2022-11-18 21:10:12,103 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 15 predicate places. [2022-11-18 21:10:12,103 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 460 transitions, 1076 flow [2022-11-18 21:10:12,105 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) [2022-11-18 21:10:12,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:12,105 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] [2022-11-18 21:10:12,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:10:12,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:12,311 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)] === [2022-11-18 21:10:12,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:12,311 INFO L85 PathProgramCache]: Analyzing trace with hash 858784956, now seen corresponding path program 1 times [2022-11-18 21:10:12,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:12,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346589528] [2022-11-18 21:10:12,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:12,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:10:12,351 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 21:10:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:10:12,408 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 21:10:12,411 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 21:10:12,411 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2022-11-18 21:10:12,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2022-11-18 21:10:12,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2022-11-18 21:10:12,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2022-11-18 21:10:12,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2022-11-18 21:10:12,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2022-11-18 21:10:12,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2022-11-18 21:10:12,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2022-11-18 21:10:12,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2022-11-18 21:10:12,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 26 remaining) [2022-11-18 21:10:12,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2022-11-18 21:10:12,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2022-11-18 21:10:12,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2022-11-18 21:10:12,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2022-11-18 21:10:12,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2022-11-18 21:10:12,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2022-11-18 21:10:12,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2022-11-18 21:10:12,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2022-11-18 21:10:12,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2022-11-18 21:10:12,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2022-11-18 21:10:12,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2022-11-18 21:10:12,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2022-11-18 21:10:12,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2022-11-18 21:10:12,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2022-11-18 21:10:12,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2022-11-18 21:10:12,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2022-11-18 21:10:12,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 21:10:12,417 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 21:10:12,418 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 21:10:12,418 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-18 21:10:12,541 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-11-18 21:10:12,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 561 places, 624 transitions, 1360 flow [2022-11-18 21:10:18,085 INFO L130 PetriNetUnfolder]: 2659/12977 cut-off events. [2022-11-18 21:10:18,085 INFO L131 PetriNetUnfolder]: For 2144/2211 co-relation queries the response was YES. [2022-11-18 21:10:18,490 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. [2022-11-18 21:10:18,490 INFO L82 GeneralOperation]: Start removeDead. Operand has 561 places, 624 transitions, 1360 flow [2022-11-18 21:10:18,732 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 561 places, 624 transitions, 1360 flow [2022-11-18 21:10:18,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:10:18,734 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;@7ef289ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:10:18,734 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2022-11-18 21:10:18,744 INFO L130 PetriNetUnfolder]: 4/83 cut-off events. [2022-11-18 21:10:18,744 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 21:10:18,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:18,744 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] [2022-11-18 21:10:18,745 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)] === [2022-11-18 21:10:18,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:18,745 INFO L85 PathProgramCache]: Analyzing trace with hash -556082653, now seen corresponding path program 1 times [2022-11-18 21:10:18,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:18,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76108150] [2022-11-18 21:10:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:18,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:18,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:18,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:18,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76108150] [2022-11-18 21:10:18,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76108150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:18,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:18,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:10:18,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904767125] [2022-11-18 21:10:18,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:18,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:10:18,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:18,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:10:18,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:10:18,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 624 [2022-11-18 21:10:18,833 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) [2022-11-18 21:10:18,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:18,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 624 [2022-11-18 21:10:18,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:24,389 INFO L130 PetriNetUnfolder]: 1860/11775 cut-off events. [2022-11-18 21:10:24,390 INFO L131 PetriNetUnfolder]: For 6492/7733 co-relation queries the response was YES. [2022-11-18 21:10:24,866 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. [2022-11-18 21:10:25,064 INFO L137 encePairwiseOnDemand]: 565/624 looper letters, 39 selfloop transitions, 4 changer transitions 0/575 dead transitions. [2022-11-18 21:10:25,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 575 transitions, 1348 flow [2022-11-18 21:10:25,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:10:25,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:10:25,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2759 transitions. [2022-11-18 21:10:25,071 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8842948717948718 [2022-11-18 21:10:25,071 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2759 transitions. [2022-11-18 21:10:25,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2759 transitions. [2022-11-18 21:10:25,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:25,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2759 transitions. [2022-11-18 21:10:25,081 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) [2022-11-18 21:10:25,088 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) [2022-11-18 21:10:25,090 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) [2022-11-18 21:10:25,090 INFO L175 Difference]: Start difference. First operand has 561 places, 624 transitions, 1360 flow. Second operand 5 states and 2759 transitions. [2022-11-18 21:10:25,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 575 transitions, 1348 flow [2022-11-18 21:10:25,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 575 transitions, 1348 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 21:10:25,104 INFO L231 Difference]: Finished difference. Result has 564 places, 571 transitions, 1280 flow [2022-11-18 21:10:25,106 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} [2022-11-18 21:10:25,106 INFO L288 CegarLoopForPetriNet]: 561 programPoint places, 3 predicate places. [2022-11-18 21:10:25,107 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 571 transitions, 1280 flow [2022-11-18 21:10:25,107 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) [2022-11-18 21:10:25,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:25,108 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] [2022-11-18 21:10:25,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 21:10:25,108 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)] === [2022-11-18 21:10:25,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:25,109 INFO L85 PathProgramCache]: Analyzing trace with hash -81323328, now seen corresponding path program 1 times [2022-11-18 21:10:25,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:25,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760742363] [2022-11-18 21:10:25,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:25,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:10:25,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:25,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760742363] [2022-11-18 21:10:25,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760742363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:25,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:25,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:10:25,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142023619] [2022-11-18 21:10:25,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:25,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:10:25,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:25,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:10:25,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:10:25,191 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 624 [2022-11-18 21:10:25,194 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) [2022-11-18 21:10:25,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:25,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 624 [2022-11-18 21:10:25,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:30,578 INFO L130 PetriNetUnfolder]: 1860/11772 cut-off events. [2022-11-18 21:10:30,578 INFO L131 PetriNetUnfolder]: For 6495/7700 co-relation queries the response was YES. [2022-11-18 21:10:31,028 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. [2022-11-18 21:10:31,187 INFO L137 encePairwiseOnDemand]: 618/624 looper letters, 31 selfloop transitions, 8 changer transitions 0/571 dead transitions. [2022-11-18 21:10:31,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 571 transitions, 1356 flow [2022-11-18 21:10:31,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:10:31,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:10:31,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2697 transitions. [2022-11-18 21:10:31,192 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.864423076923077 [2022-11-18 21:10:31,192 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2697 transitions. [2022-11-18 21:10:31,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2697 transitions. [2022-11-18 21:10:31,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:31,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2697 transitions. [2022-11-18 21:10:31,199 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) [2022-11-18 21:10:31,205 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) [2022-11-18 21:10:31,206 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) [2022-11-18 21:10:31,207 INFO L175 Difference]: Start difference. First operand has 564 places, 571 transitions, 1280 flow. Second operand 5 states and 2697 transitions. [2022-11-18 21:10:31,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 571 transitions, 1356 flow [2022-11-18 21:10:31,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 571 transitions, 1354 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:10:31,220 INFO L231 Difference]: Finished difference. Result has 567 places, 571 transitions, 1298 flow [2022-11-18 21:10:31,221 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} [2022-11-18 21:10:31,221 INFO L288 CegarLoopForPetriNet]: 561 programPoint places, 6 predicate places. [2022-11-18 21:10:31,222 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 571 transitions, 1298 flow [2022-11-18 21:10:31,222 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) [2022-11-18 21:10:31,222 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:31,223 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] [2022-11-18 21:10:31,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 21:10:31,223 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)] === [2022-11-18 21:10:31,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:31,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1773946004, now seen corresponding path program 1 times [2022-11-18 21:10:31,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:31,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161310694] [2022-11-18 21:10:31,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:31,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:31,334 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:31,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:31,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161310694] [2022-11-18 21:10:31,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161310694] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:31,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443496517] [2022-11-18 21:10:31,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:31,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:31,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:31,340 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:31,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 21:10:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:31,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 21:10:31,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:31,619 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:31,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:10:31,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443496517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:31,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:10:31,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 21:10:31,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284350502] [2022-11-18 21:10:31,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:31,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:10:31,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:31,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:10:31,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:10:31,625 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 624 [2022-11-18 21:10:31,627 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) [2022-11-18 21:10:31,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:31,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 624 [2022-11-18 21:10:31,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:37,140 INFO L130 PetriNetUnfolder]: 1860/11769 cut-off events. [2022-11-18 21:10:37,140 INFO L131 PetriNetUnfolder]: For 6505/7674 co-relation queries the response was YES. [2022-11-18 21:10:37,568 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. [2022-11-18 21:10:37,723 INFO L137 encePairwiseOnDemand]: 620/624 looper letters, 33 selfloop transitions, 5 changer transitions 0/570 dead transitions. [2022-11-18 21:10:37,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 570 transitions, 1370 flow [2022-11-18 21:10:37,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:10:37,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:10:37,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2163 transitions. [2022-11-18 21:10:37,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8665865384615384 [2022-11-18 21:10:37,729 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2163 transitions. [2022-11-18 21:10:37,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2163 transitions. [2022-11-18 21:10:37,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:37,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2163 transitions. [2022-11-18 21:10:37,734 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) [2022-11-18 21:10:37,739 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) [2022-11-18 21:10:37,740 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) [2022-11-18 21:10:37,740 INFO L175 Difference]: Start difference. First operand has 567 places, 571 transitions, 1298 flow. Second operand 4 states and 2163 transitions. [2022-11-18 21:10:37,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 570 transitions, 1370 flow [2022-11-18 21:10:37,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 570 transitions, 1358 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 21:10:37,752 INFO L231 Difference]: Finished difference. Result has 566 places, 570 transitions, 1292 flow [2022-11-18 21:10:37,753 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} [2022-11-18 21:10:37,754 INFO L288 CegarLoopForPetriNet]: 561 programPoint places, 5 predicate places. [2022-11-18 21:10:37,754 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 570 transitions, 1292 flow [2022-11-18 21:10:37,755 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) [2022-11-18 21:10:37,755 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:37,755 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] [2022-11-18 21:10:37,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 21:10:37,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 21:10:37,961 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)] === [2022-11-18 21:10:37,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:37,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1425730540, now seen corresponding path program 1 times [2022-11-18 21:10:37,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:37,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690720575] [2022-11-18 21:10:37,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:37,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:38,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:38,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690720575] [2022-11-18 21:10:38,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690720575] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:38,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194456944] [2022-11-18 21:10:38,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:38,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:38,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:38,047 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:38,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 21:10:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:38,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 21:10:38,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:38,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:10:38,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:38,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194456944] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:10:38,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:10:38,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 21:10:38,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827448443] [2022-11-18 21:10:38,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:10:38,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 21:10:38,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:38,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 21:10:38,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:10:38,366 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 624 [2022-11-18 21:10:38,371 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) [2022-11-18 21:10:38,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:38,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 624 [2022-11-18 21:10:38,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:43,787 INFO L130 PetriNetUnfolder]: 1826/10973 cut-off events. [2022-11-18 21:10:43,788 INFO L131 PetriNetUnfolder]: For 6348/6947 co-relation queries the response was YES. [2022-11-18 21:10:44,184 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. [2022-11-18 21:10:44,329 INFO L137 encePairwiseOnDemand]: 618/624 looper letters, 40 selfloop transitions, 9 changer transitions 0/581 dead transitions. [2022-11-18 21:10:44,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 581 transitions, 1428 flow [2022-11-18 21:10:44,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:10:44,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 21:10:44,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4839 transitions. [2022-11-18 21:10:44,337 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8616452991452992 [2022-11-18 21:10:44,338 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4839 transitions. [2022-11-18 21:10:44,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4839 transitions. [2022-11-18 21:10:44,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:44,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4839 transitions. [2022-11-18 21:10:44,349 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) [2022-11-18 21:10:44,357 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) [2022-11-18 21:10:44,359 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) [2022-11-18 21:10:44,359 INFO L175 Difference]: Start difference. First operand has 566 places, 570 transitions, 1292 flow. Second operand 9 states and 4839 transitions. [2022-11-18 21:10:44,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 581 transitions, 1428 flow [2022-11-18 21:10:44,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 581 transitions, 1414 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 21:10:44,371 INFO L231 Difference]: Finished difference. Result has 575 places, 574 transitions, 1338 flow [2022-11-18 21:10:44,372 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} [2022-11-18 21:10:44,373 INFO L288 CegarLoopForPetriNet]: 561 programPoint places, 14 predicate places. [2022-11-18 21:10:44,373 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 574 transitions, 1338 flow [2022-11-18 21:10:44,375 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) [2022-11-18 21:10:44,375 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:44,375 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] [2022-11-18 21:10:44,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 21:10:44,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dde6954-9cbb-488f-b921-beeb8404af19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 21:10:44,581 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)] === [2022-11-18 21:10:44,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:44,581 INFO L85 PathProgramCache]: Analyzing trace with hash -755312303, now seen corresponding path program 1 times [2022-11-18 21:10:44,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:44,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478892596] [2022-11-18 21:10:44,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:44,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 21:10:44,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:44,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478892596] [2022-11-18 21:10:44,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478892596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:44,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:44,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:10:44,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583197837] [2022-11-18 21:10:44,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:44,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:10:44,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:44,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:10:44,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:10:44,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 624 [2022-11-18 21:10:44,679 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) [2022-11-18 21:10:44,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:44,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 624 [2022-11-18 21:10:44,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:50,121 INFO L130 PetriNetUnfolder]: 1824/10965 cut-off events. [2022-11-18 21:10:50,122 INFO L131 PetriNetUnfolder]: For 6620/8754 co-relation queries the response was YES. [2022-11-18 21:10:50,500 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. [2022-11-18 21:10:50,645 INFO L137 encePairwiseOnDemand]: 617/624 looper letters, 39 selfloop transitions, 4 changer transitions 0/581 dead transitions. [2022-11-18 21:10:50,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 581 transitions, 1438 flow [2022-11-18 21:10:50,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:10:50,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:10:50,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2706 transitions. [2022-11-18 21:10:50,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8673076923076923 [2022-11-18 21:10:50,649 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2706 transitions. [2022-11-18 21:10:50,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2706 transitions. [2022-11-18 21:10:50,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:50,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2706 transitions. [2022-11-18 21:10:50,655 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) [2022-11-18 21:10:50,660 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) [2022-11-18 21:10:50,662 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) [2022-11-18 21:10:50,662 INFO L175 Difference]: Start difference. First operand has 575 places, 574 transitions, 1338 flow. Second operand 5 states and 2706 transitions. [2022-11-18 21:10:50,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 581 transitions, 1438 flow [2022-11-18 21:10:50,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 581 transitions, 1422 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-18 21:10:50,674 INFO L231 Difference]: Finished difference. Result has 578 places, 577 transitions, 1354 flow [2022-11-18 21:10:50,675 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} [2022-11-18 21:10:50,676 INFO L288 CegarLoopForPetriNet]: 561 programPoint places, 17 predicate places. [2022-11-18 21:10:50,676 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 577 transitions, 1354 flow [2022-11-18 21:10:50,677 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) [2022-11-18 21:10:50,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:50,677 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] [2022-11-18 21:10:50,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 21:10:50,678 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)] === [2022-11-18 21:10:50,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:50,678 INFO L85 PathProgramCache]: Analyzing trace with hash -931431635, now seen corresponding path program 1 times [2022-11-18 21:10:50,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:50,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480133160] [2022-11-18 21:10:50,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:50,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:10:50,722 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 21:10:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:10:50,781 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 21:10:50,783 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 21:10:50,783 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 30 remaining) [2022-11-18 21:10:50,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 30 remaining) [2022-11-18 21:10:50,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 30 remaining) [2022-11-18 21:10:50,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 30 remaining) [2022-11-18 21:10:50,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 30 remaining) [2022-11-18 21:10:50,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 30 remaining) [2022-11-18 21:10:50,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 30 remaining) [2022-11-18 21:10:50,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 30 remaining) [2022-11-18 21:10:50,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 30 remaining) [2022-11-18 21:10:50,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 30 remaining) [2022-11-18 21:10:50,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 30 remaining) [2022-11-18 21:10:50,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 30 remaining) [2022-11-18 21:10:50,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 30 remaining) [2022-11-18 21:10:50,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 30 remaining) [2022-11-18 21:10:50,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 30 remaining) [2022-11-18 21:10:50,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 30 remaining) [2022-11-18 21:10:50,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 30 remaining) [2022-11-18 21:10:50,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 30 remaining) [2022-11-18 21:10:50,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 30 remaining) [2022-11-18 21:10:50,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 30 remaining) [2022-11-18 21:10:50,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 30 remaining) [2022-11-18 21:10:50,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 30 remaining) [2022-11-18 21:10:50,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 30 remaining) [2022-11-18 21:10:50,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 30 remaining) [2022-11-18 21:10:50,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 30 remaining) [2022-11-18 21:10:50,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 30 remaining) [2022-11-18 21:10:50,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 30 remaining) [2022-11-18 21:10:50,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 30 remaining) [2022-11-18 21:10:50,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 30 remaining) [2022-11-18 21:10:50,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 30 remaining) [2022-11-18 21:10:50,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 21:10:50,791 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-18 21:10:50,792 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 21:10:50,792 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-18 21:10:50,907 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-11-18 21:10:50,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 673 places, 751 transitions, 1652 flow