./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_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_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/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_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/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_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/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 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df --- 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 18:23:58,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:23:58,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:23:58,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:23:58,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:23:58,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:23:58,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:23:58,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:23:58,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:23:58,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:23:58,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:23:58,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:23:58,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:23:58,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:23:58,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:23:58,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:23:58,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:23:58,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:23:58,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:23:58,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:23:58,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:23:58,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:23:58,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:23:58,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:23:58,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:23:58,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:23:58,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:23:58,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:23:58,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:23:58,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:23:58,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:23:58,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:23:58,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:23:58,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:23:58,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:23:58,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:23:58,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:23:58,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:23:58,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:23:58,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:23:58,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:23:58,507 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:23:58,547 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:23:58,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:23:58,548 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:23:58,548 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:23:58,549 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:23:58,549 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:23:58,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:23:58,550 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:23:58,551 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:23:58,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:23:58,551 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:23:58,551 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:23:58,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:23:58,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:23:58,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:23:58,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:23:58,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:23:58,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:23:58,558 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:23:58,559 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:23:58,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:23:58,559 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:23:58,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:23:58,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:23:58,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:23:58,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:23:58,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:23:58,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:23:58,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:23:58,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:23:58,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:23:58,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:23:58,563 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:23:58,564 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:23:58,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:23:58,564 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_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df [2022-11-18 18:23:58,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:23:58,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:23:58,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:23:58,978 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:23:58,979 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:23:58,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i [2022-11-18 18:23:59,066 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/data/d44eb234c/342319a34da240f5bf55de6e690fe064/FLAG1b1213a0a [2022-11-18 18:23:59,714 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:23:59,715 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i [2022-11-18 18:23:59,729 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/data/d44eb234c/342319a34da240f5bf55de6e690fe064/FLAG1b1213a0a [2022-11-18 18:23:59,999 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/data/d44eb234c/342319a34da240f5bf55de6e690fe064 [2022-11-18 18:24:00,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:24:00,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:24:00,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:24:00,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:24:00,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:24:00,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:24:00" (1/1) ... [2022-11-18 18:24:00,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4cc97e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:00, skipping insertion in model container [2022-11-18 18:24:00,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:24:00" (1/1) ... [2022-11-18 18:24:00,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:24:00,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:24:00,446 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_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i[30176,30189] [2022-11-18 18:24:00,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:24:00,491 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:24:00,523 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_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i[30176,30189] [2022-11-18 18:24:00,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:24:00,567 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:24:00,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:00 WrapperNode [2022-11-18 18:24:00,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:24:00,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:24:00,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:24:00,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:24:00,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:00" (1/1) ... [2022-11-18 18:24:00,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:00" (1/1) ... [2022-11-18 18:24:00,618 INFO L138 Inliner]: procedures = 170, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 87 [2022-11-18 18:24:00,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:24:00,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:24:00,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:24:00,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:24:00,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:00" (1/1) ... [2022-11-18 18:24:00,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:00" (1/1) ... [2022-11-18 18:24:00,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:00" (1/1) ... [2022-11-18 18:24:00,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:00" (1/1) ... [2022-11-18 18:24:00,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:00" (1/1) ... [2022-11-18 18:24:00,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:00" (1/1) ... [2022-11-18 18:24:00,647 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:00" (1/1) ... [2022-11-18 18:24:00,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:00" (1/1) ... [2022-11-18 18:24:00,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:24:00,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:24:00,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:24:00,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:24:00,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:00" (1/1) ... [2022-11-18 18:24:00,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:24:00,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:00,706 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:24:00,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:24:00,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:24:00,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:24:00,770 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 18:24:00,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:24:00,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:24:00,771 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 18:24:00,771 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 18:24:00,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:24:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:24:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:24:00,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:24:00,774 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 18:24:00,995 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:24:00,997 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:24:01,319 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:24:01,328 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:24:01,328 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-18 18:24:01,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:24:01 BoogieIcfgContainer [2022-11-18 18:24:01,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:24:01,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:24:01,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:24:01,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:24:01,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:24:00" (1/3) ... [2022-11-18 18:24:01,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dbc5438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:24:01, skipping insertion in model container [2022-11-18 18:24:01,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:00" (2/3) ... [2022-11-18 18:24:01,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dbc5438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:24:01, skipping insertion in model container [2022-11-18 18:24:01,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:24:01" (3/3) ... [2022-11-18 18:24:01,341 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2022-11-18 18:24:01,351 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:24:01,362 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:24:01,363 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 18:24:01,363 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:24:01,447 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 18:24:01,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 136 transitions, 280 flow [2022-11-18 18:24:01,608 INFO L130 PetriNetUnfolder]: 17/173 cut-off events. [2022-11-18 18:24:01,609 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 18:24:01,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 173 events. 17/173 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 417 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2022-11-18 18:24:01,617 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 136 transitions, 280 flow [2022-11-18 18:24:01,627 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 133 transitions, 274 flow [2022-11-18 18:24:01,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:24:01,669 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;@1d614f69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:24:01,669 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-18 18:24:01,716 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-18 18:24:01,717 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:24:01,718 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:01,719 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] [2022-11-18 18:24:01,719 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 18:24:01,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:01,727 INFO L85 PathProgramCache]: Analyzing trace with hash 961564566, now seen corresponding path program 1 times [2022-11-18 18:24:01,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:01,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130614859] [2022-11-18 18:24:01,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:01,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:02,321 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 18:24:02,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:02,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130614859] [2022-11-18 18:24:02,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130614859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:02,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:02,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:24:02,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194759022] [2022-11-18 18:24:02,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:02,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:24:02,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:02,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:24:02,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:24:02,412 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 136 [2022-11-18 18:24:02,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 133 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states 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 18:24:02,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:02,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 136 [2022-11-18 18:24:02,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:02,567 INFO L130 PetriNetUnfolder]: 0/123 cut-off events. [2022-11-18 18:24:02,568 INFO L131 PetriNetUnfolder]: For 3/12 co-relation queries the response was YES. [2022-11-18 18:24:02,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 123 events. 0/123 cut-off events. For 3/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 108 event pairs, 0 based on Foata normal form. 38/153 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-18 18:24:02,571 INFO L137 encePairwiseOnDemand]: 118/136 looper letters, 10 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2022-11-18 18:24:02,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 121 transitions, 278 flow [2022-11-18 18:24:02,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:24:02,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:24:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 597 transitions. [2022-11-18 18:24:02,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8779411764705882 [2022-11-18 18:24:02,600 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 597 transitions. [2022-11-18 18:24:02,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 597 transitions. [2022-11-18 18:24:02,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:02,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 597 transitions. [2022-11-18 18:24:02,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 119.4) internal successors, (597), 5 states have internal predecessors, (597), 0 states have call successors, (0), 0 states 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 18:24:02,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states 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 18:24:02,624 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states 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 18:24:02,626 INFO L175 Difference]: Start difference. First operand has 125 places, 133 transitions, 274 flow. Second operand 5 states and 597 transitions. [2022-11-18 18:24:02,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 121 transitions, 278 flow [2022-11-18 18:24:02,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 121 transitions, 278 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:24:02,636 INFO L231 Difference]: Finished difference. Result has 127 places, 119 transitions, 258 flow [2022-11-18 18:24:02,638 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=127, PETRI_TRANSITIONS=119} [2022-11-18 18:24:02,642 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 2 predicate places. [2022-11-18 18:24:02,642 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 119 transitions, 258 flow [2022-11-18 18:24:02,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states 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 18:24:02,643 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:02,643 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] [2022-11-18 18:24:02,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:24:02,644 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 18:24:02,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:02,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1205684249, now seen corresponding path program 1 times [2022-11-18 18:24:02,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:02,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999580974] [2022-11-18 18:24:02,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:02,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:03,017 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 18:24:03,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:03,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999580974] [2022-11-18 18:24:03,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999580974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:03,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:03,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:24:03,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093315617] [2022-11-18 18:24:03,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:03,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:24:03,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:03,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:24:03,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:24:03,032 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 136 [2022-11-18 18:24:03,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 119 transitions, 258 flow. Second operand has 10 states, 10 states have (on average 80.4) internal successors, (804), 10 states have internal predecessors, (804), 0 states have call successors, (0), 0 states 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 18:24:03,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:03,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 136 [2022-11-18 18:24:03,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:03,654 INFO L130 PetriNetUnfolder]: 53/390 cut-off events. [2022-11-18 18:24:03,654 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 18:24:03,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 390 events. 53/390 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1975 event pairs, 0 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 490. Up to 35 conditions per place. [2022-11-18 18:24:03,661 INFO L137 encePairwiseOnDemand]: 121/136 looper letters, 71 selfloop transitions, 29 changer transitions 1/173 dead transitions. [2022-11-18 18:24:03,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 173 transitions, 568 flow [2022-11-18 18:24:03,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:24:03,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 18:24:03,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1493 transitions. [2022-11-18 18:24:03,666 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6098856209150327 [2022-11-18 18:24:03,666 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1493 transitions. [2022-11-18 18:24:03,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1493 transitions. [2022-11-18 18:24:03,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:03,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1493 transitions. [2022-11-18 18:24:03,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 82.94444444444444) internal successors, (1493), 18 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states 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 18:24:03,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 136.0) internal successors, (2584), 19 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states 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 18:24:03,682 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 136.0) internal successors, (2584), 19 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states 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 18:24:03,682 INFO L175 Difference]: Start difference. First operand has 127 places, 119 transitions, 258 flow. Second operand 18 states and 1493 transitions. [2022-11-18 18:24:03,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 173 transitions, 568 flow [2022-11-18 18:24:03,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 173 transitions, 560 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 18:24:03,692 INFO L231 Difference]: Finished difference. Result has 149 places, 142 transitions, 430 flow [2022-11-18 18:24:03,692 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=430, PETRI_PLACES=149, PETRI_TRANSITIONS=142} [2022-11-18 18:24:03,693 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 24 predicate places. [2022-11-18 18:24:03,693 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 142 transitions, 430 flow [2022-11-18 18:24:03,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 80.4) internal successors, (804), 10 states have internal predecessors, (804), 0 states have call successors, (0), 0 states 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 18:24:03,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:03,696 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] [2022-11-18 18:24:03,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:24:03,697 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 18:24:03,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:03,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1716206805, now seen corresponding path program 1 times [2022-11-18 18:24:03,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:03,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650083844] [2022-11-18 18:24:03,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:03,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:24:03,752 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:24:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:24:03,804 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:24:03,804 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:24:03,806 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-18 18:24:03,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-18 18:24:03,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-18 18:24:03,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-18 18:24:03,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-18 18:24:03,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-18 18:24:03,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-18 18:24:03,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-18 18:24:03,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-18 18:24:03,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-18 18:24:03,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-18 18:24:03,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-18 18:24:03,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-18 18:24:03,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:24:03,818 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-18 18:24:03,822 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:24:03,823 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 18:24:03,889 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 18:24:03,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 179 transitions, 376 flow [2022-11-18 18:24:03,962 INFO L130 PetriNetUnfolder]: 31/290 cut-off events. [2022-11-18 18:24:03,963 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 18:24:03,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 290 events. 31/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 906 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2022-11-18 18:24:03,969 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 179 transitions, 376 flow [2022-11-18 18:24:03,974 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 179 transitions, 376 flow [2022-11-18 18:24:03,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:24:03,996 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;@1d614f69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:24:03,996 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-18 18:24:04,004 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-18 18:24:04,005 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:24:04,005 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:04,005 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] [2022-11-18 18:24:04,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 18:24:04,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:04,006 INFO L85 PathProgramCache]: Analyzing trace with hash 2060131666, now seen corresponding path program 1 times [2022-11-18 18:24:04,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:04,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68890076] [2022-11-18 18:24:04,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:04,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:04,148 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 18:24:04,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:04,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68890076] [2022-11-18 18:24:04,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68890076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:04,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:04,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:24:04,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724657057] [2022-11-18 18:24:04,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:04,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:24:04,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:04,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:24:04,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:24:04,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 179 [2022-11-18 18:24:04,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 179 transitions, 376 flow. Second operand has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 0 states have call successors, (0), 0 states 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 18:24:04,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:04,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 179 [2022-11-18 18:24:04,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:04,281 INFO L130 PetriNetUnfolder]: 2/239 cut-off events. [2022-11-18 18:24:04,281 INFO L131 PetriNetUnfolder]: For 45/125 co-relation queries the response was YES. [2022-11-18 18:24:04,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 239 events. 2/239 cut-off events. For 45/125 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 553 event pairs, 0 based on Foata normal form. 114/329 useless extension candidates. Maximal degree in co-relation 150. Up to 21 conditions per place. [2022-11-18 18:24:04,284 INFO L137 encePairwiseOnDemand]: 155/179 looper letters, 19 selfloop transitions, 4 changer transitions 0/168 dead transitions. [2022-11-18 18:24:04,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 168 transitions, 400 flow [2022-11-18 18:24:04,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:24:04,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:24:04,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 787 transitions. [2022-11-18 18:24:04,289 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8793296089385475 [2022-11-18 18:24:04,289 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 787 transitions. [2022-11-18 18:24:04,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 787 transitions. [2022-11-18 18:24:04,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:04,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 787 transitions. [2022-11-18 18:24:04,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.4) internal successors, (787), 5 states have internal predecessors, (787), 0 states have call successors, (0), 0 states 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 18:24:04,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states 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 18:24:04,296 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states 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 18:24:04,297 INFO L175 Difference]: Start difference. First operand has 165 places, 179 transitions, 376 flow. Second operand 5 states and 787 transitions. [2022-11-18 18:24:04,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 168 transitions, 400 flow [2022-11-18 18:24:04,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 168 transitions, 400 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:24:04,307 INFO L231 Difference]: Finished difference. Result has 171 places, 164 transitions, 372 flow [2022-11-18 18:24:04,308 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=372, PETRI_PLACES=171, PETRI_TRANSITIONS=164} [2022-11-18 18:24:04,311 INFO L288 CegarLoopForPetriNet]: 165 programPoint places, 6 predicate places. [2022-11-18 18:24:04,312 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 164 transitions, 372 flow [2022-11-18 18:24:04,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 0 states have call successors, (0), 0 states 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 18:24:04,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:04,317 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] [2022-11-18 18:24:04,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:24:04,319 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 18:24:04,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:04,323 INFO L85 PathProgramCache]: Analyzing trace with hash -398113853, now seen corresponding path program 1 times [2022-11-18 18:24:04,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:04,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535433546] [2022-11-18 18:24:04,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:04,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:04,722 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 18:24:04,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:04,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535433546] [2022-11-18 18:24:04,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535433546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:04,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:04,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:24:04,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270011267] [2022-11-18 18:24:04,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:04,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:24:04,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:04,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:24:04,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:24:04,727 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 179 [2022-11-18 18:24:04,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 164 transitions, 372 flow. Second operand has 10 states, 10 states have (on average 110.4) internal successors, (1104), 10 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states 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 18:24:04,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:04,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 179 [2022-11-18 18:24:04,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:06,492 INFO L130 PetriNetUnfolder]: 1618/5668 cut-off events. [2022-11-18 18:24:06,492 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2022-11-18 18:24:06,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8607 conditions, 5668 events. 1618/5668 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 56481 event pairs, 399 based on Foata normal form. 0/5091 useless extension candidates. Maximal degree in co-relation 8510. Up to 971 conditions per place. [2022-11-18 18:24:06,548 INFO L137 encePairwiseOnDemand]: 163/179 looper letters, 188 selfloop transitions, 49 changer transitions 0/347 dead transitions. [2022-11-18 18:24:06,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 347 transitions, 1261 flow [2022-11-18 18:24:06,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:24:06,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 18:24:06,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2603 transitions. [2022-11-18 18:24:06,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6609954291518537 [2022-11-18 18:24:06,558 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2603 transitions. [2022-11-18 18:24:06,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2603 transitions. [2022-11-18 18:24:06,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:06,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2603 transitions. [2022-11-18 18:24:06,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 118.31818181818181) internal successors, (2603), 22 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states 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 18:24:06,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 179.0) internal successors, (4117), 23 states have internal predecessors, (4117), 0 states have call successors, (0), 0 states 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 18:24:06,579 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 179.0) internal successors, (4117), 23 states have internal predecessors, (4117), 0 states have call successors, (0), 0 states 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 18:24:06,579 INFO L175 Difference]: Start difference. First operand has 171 places, 164 transitions, 372 flow. Second operand 22 states and 2603 transitions. [2022-11-18 18:24:06,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 347 transitions, 1261 flow [2022-11-18 18:24:06,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 347 transitions, 1259 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:24:06,589 INFO L231 Difference]: Finished difference. Result has 207 places, 220 transitions, 758 flow [2022-11-18 18:24:06,590 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=758, PETRI_PLACES=207, PETRI_TRANSITIONS=220} [2022-11-18 18:24:06,591 INFO L288 CegarLoopForPetriNet]: 165 programPoint places, 42 predicate places. [2022-11-18 18:24:06,591 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 220 transitions, 758 flow [2022-11-18 18:24:06,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 110.4) internal successors, (1104), 10 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states 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 18:24:06,592 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:06,592 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] [2022-11-18 18:24:06,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:24:06,593 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 18:24:06,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:06,594 INFO L85 PathProgramCache]: Analyzing trace with hash 589000491, now seen corresponding path program 1 times [2022-11-18 18:24:06,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:06,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642345275] [2022-11-18 18:24:06,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:06,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:06,661 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 18:24:06,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:06,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642345275] [2022-11-18 18:24:06,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642345275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:06,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:06,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:24:06,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094861687] [2022-11-18 18:24:06,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:06,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:24:06,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:06,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:24:06,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:24:06,665 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 179 [2022-11-18 18:24:06,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 220 transitions, 758 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 18:24:06,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:06,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 179 [2022-11-18 18:24:06,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:07,001 INFO L130 PetriNetUnfolder]: 113/1316 cut-off events. [2022-11-18 18:24:07,001 INFO L131 PetriNetUnfolder]: For 1340/1553 co-relation queries the response was YES. [2022-11-18 18:24:07,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2277 conditions, 1316 events. 113/1316 cut-off events. For 1340/1553 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 9982 event pairs, 25 based on Foata normal form. 62/1263 useless extension candidates. Maximal degree in co-relation 2151. Up to 89 conditions per place. [2022-11-18 18:24:07,019 INFO L137 encePairwiseOnDemand]: 173/179 looper letters, 14 selfloop transitions, 8 changer transitions 0/220 dead transitions. [2022-11-18 18:24:07,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 220 transitions, 800 flow [2022-11-18 18:24:07,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:24:07,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:24:07,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 742 transitions. [2022-11-18 18:24:07,023 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.829050279329609 [2022-11-18 18:24:07,023 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 742 transitions. [2022-11-18 18:24:07,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 742 transitions. [2022-11-18 18:24:07,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:07,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 742 transitions. [2022-11-18 18:24:07,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states 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 18:24:07,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states 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 18:24:07,029 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states 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 18:24:07,029 INFO L175 Difference]: Start difference. First operand has 207 places, 220 transitions, 758 flow. Second operand 5 states and 742 transitions. [2022-11-18 18:24:07,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 220 transitions, 800 flow [2022-11-18 18:24:07,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 220 transitions, 799 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:24:07,045 INFO L231 Difference]: Finished difference. Result has 210 places, 220 transitions, 777 flow [2022-11-18 18:24:07,046 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=777, PETRI_PLACES=210, PETRI_TRANSITIONS=220} [2022-11-18 18:24:07,047 INFO L288 CegarLoopForPetriNet]: 165 programPoint places, 45 predicate places. [2022-11-18 18:24:07,047 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 220 transitions, 777 flow [2022-11-18 18:24:07,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 18:24:07,048 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:07,048 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] [2022-11-18 18:24:07,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:24:07,049 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 18:24:07,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:07,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1079146498, now seen corresponding path program 1 times [2022-11-18 18:24:07,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:07,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785861750] [2022-11-18 18:24:07,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:07,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:07,154 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 18:24:07,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:07,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785861750] [2022-11-18 18:24:07,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785861750] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:24:07,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566270028] [2022-11-18 18:24:07,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:07,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:07,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:07,161 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:24:07,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:24:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:07,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:24:07,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:24:07,427 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 18:24:07,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:24:07,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566270028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:07,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:24:07,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 18:24:07,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133974558] [2022-11-18 18:24:07,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:07,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:24:07,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:07,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:24:07,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:24:07,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 179 [2022-11-18 18:24:07,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 220 transitions, 777 flow. Second operand has 6 states, 6 states have (on average 147.66666666666666) internal successors, (886), 6 states have internal predecessors, (886), 0 states have call successors, (0), 0 states 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 18:24:07,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:07,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 179 [2022-11-18 18:24:07,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:07,829 INFO L130 PetriNetUnfolder]: 105/1471 cut-off events. [2022-11-18 18:24:07,829 INFO L131 PetriNetUnfolder]: For 1245/1382 co-relation queries the response was YES. [2022-11-18 18:24:07,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2378 conditions, 1471 events. 105/1471 cut-off events. For 1245/1382 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 11606 event pairs, 17 based on Foata normal form. 28/1361 useless extension candidates. Maximal degree in co-relation 2283. Up to 77 conditions per place. [2022-11-18 18:24:07,851 INFO L137 encePairwiseOnDemand]: 174/179 looper letters, 18 selfloop transitions, 6 changer transitions 0/222 dead transitions. [2022-11-18 18:24:07,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 222 transitions, 833 flow [2022-11-18 18:24:07,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:24:07,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:24:07,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1037 transitions. [2022-11-18 18:24:07,855 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8276137270550679 [2022-11-18 18:24:07,855 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1037 transitions. [2022-11-18 18:24:07,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1037 transitions. [2022-11-18 18:24:07,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:07,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1037 transitions. [2022-11-18 18:24:07,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states 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 18:24:07,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states 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 18:24:07,893 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states 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 18:24:07,893 INFO L175 Difference]: Start difference. First operand has 210 places, 220 transitions, 777 flow. Second operand 7 states and 1037 transitions. [2022-11-18 18:24:07,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 222 transitions, 833 flow [2022-11-18 18:24:07,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 222 transitions, 821 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:24:07,905 INFO L231 Difference]: Finished difference. Result has 212 places, 219 transitions, 773 flow [2022-11-18 18:24:07,906 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=773, PETRI_PLACES=212, PETRI_TRANSITIONS=219} [2022-11-18 18:24:07,906 INFO L288 CegarLoopForPetriNet]: 165 programPoint places, 47 predicate places. [2022-11-18 18:24:07,907 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 219 transitions, 773 flow [2022-11-18 18:24:07,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.66666666666666) internal successors, (886), 6 states have internal predecessors, (886), 0 states have call successors, (0), 0 states 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 18:24:07,907 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:07,908 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] [2022-11-18 18:24:07,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:24:08,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 18:24:08,115 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 18:24:08,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:08,116 INFO L85 PathProgramCache]: Analyzing trace with hash 153857345, now seen corresponding path program 1 times [2022-11-18 18:24:08,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:08,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965337948] [2022-11-18 18:24:08,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:08,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:24:08,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:08,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965337948] [2022-11-18 18:24:08,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965337948] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:24:08,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866367443] [2022-11-18 18:24:08,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:08,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:08,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:08,441 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:24:08,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:24:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:08,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:24:08,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:24:08,776 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:24:08,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 18:24:08,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:24:09,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:24:09,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 18:24:09,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:24:09,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:24:09,474 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_70 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_70) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483647)) is different from false [2022-11-18 18:24:09,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-18 18:24:09,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:24:09,805 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 18:24:09,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-18 18:24:09,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2022-11-18 18:24:09,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866367443] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:24:09,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:24:09,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-11-18 18:24:09,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343196654] [2022-11-18 18:24:09,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:24:09,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 18:24:09,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:09,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 18:24:09,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=467, Unknown=7, NotChecked=44, Total=600 [2022-11-18 18:24:09,823 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 179 [2022-11-18 18:24:09,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 219 transitions, 773 flow. Second operand has 25 states, 25 states have (on average 109.32) internal successors, (2733), 25 states have internal predecessors, (2733), 0 states have call successors, (0), 0 states 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 18:24:09,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:09,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 179 [2022-11-18 18:24:09,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:12,693 INFO L130 PetriNetUnfolder]: 2151/8042 cut-off events. [2022-11-18 18:24:12,694 INFO L131 PetriNetUnfolder]: For 10967/11296 co-relation queries the response was YES. [2022-11-18 18:24:12,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16970 conditions, 8042 events. 2151/8042 cut-off events. For 10967/11296 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 87378 event pairs, 170 based on Foata normal form. 208/7584 useless extension candidates. Maximal degree in co-relation 16520. Up to 634 conditions per place. [2022-11-18 18:24:12,884 INFO L137 encePairwiseOnDemand]: 160/179 looper letters, 212 selfloop transitions, 114 changer transitions 0/435 dead transitions. [2022-11-18 18:24:12,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 435 transitions, 2421 flow [2022-11-18 18:24:12,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 18:24:12,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 18:24:12,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3279 transitions. [2022-11-18 18:24:12,895 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6542298483639266 [2022-11-18 18:24:12,895 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3279 transitions. [2022-11-18 18:24:12,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3279 transitions. [2022-11-18 18:24:12,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:12,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3279 transitions. [2022-11-18 18:24:12,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 117.10714285714286) internal successors, (3279), 28 states have internal predecessors, (3279), 0 states have call successors, (0), 0 states 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 18:24:12,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 179.0) internal successors, (5191), 29 states have internal predecessors, (5191), 0 states have call successors, (0), 0 states 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 18:24:12,921 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 179.0) internal successors, (5191), 29 states have internal predecessors, (5191), 0 states have call successors, (0), 0 states 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 18:24:12,922 INFO L175 Difference]: Start difference. First operand has 212 places, 219 transitions, 773 flow. Second operand 28 states and 3279 transitions. [2022-11-18 18:24:12,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 435 transitions, 2421 flow [2022-11-18 18:24:13,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 435 transitions, 2410 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 18:24:13,043 INFO L231 Difference]: Finished difference. Result has 250 places, 282 transitions, 1536 flow [2022-11-18 18:24:13,044 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1536, PETRI_PLACES=250, PETRI_TRANSITIONS=282} [2022-11-18 18:24:13,045 INFO L288 CegarLoopForPetriNet]: 165 programPoint places, 85 predicate places. [2022-11-18 18:24:13,046 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 282 transitions, 1536 flow [2022-11-18 18:24:13,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 109.32) internal successors, (2733), 25 states have internal predecessors, (2733), 0 states have call successors, (0), 0 states 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 18:24:13,048 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:13,048 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] [2022-11-18 18:24:13,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:24:13,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:13,255 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 18:24:13,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:13,255 INFO L85 PathProgramCache]: Analyzing trace with hash -978062594, now seen corresponding path program 1 times [2022-11-18 18:24:13,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:13,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216585962] [2022-11-18 18:24:13,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:13,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:13,463 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 18:24:13,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:13,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216585962] [2022-11-18 18:24:13,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216585962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:13,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:13,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:24:13,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930440965] [2022-11-18 18:24:13,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:13,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:24:13,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:13,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:24:13,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:24:13,467 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 179 [2022-11-18 18:24:13,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 282 transitions, 1536 flow. Second operand has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states 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 18:24:13,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:13,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 179 [2022-11-18 18:24:13,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:16,004 INFO L130 PetriNetUnfolder]: 2194/8671 cut-off events. [2022-11-18 18:24:16,004 INFO L131 PetriNetUnfolder]: For 21041/21574 co-relation queries the response was YES. [2022-11-18 18:24:16,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21545 conditions, 8671 events. 2194/8671 cut-off events. For 21041/21574 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 97283 event pairs, 512 based on Foata normal form. 128/7888 useless extension candidates. Maximal degree in co-relation 21281. Up to 1396 conditions per place. [2022-11-18 18:24:16,129 INFO L137 encePairwiseOnDemand]: 166/179 looper letters, 173 selfloop transitions, 81 changer transitions 0/402 dead transitions. [2022-11-18 18:24:16,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 402 transitions, 2789 flow [2022-11-18 18:24:16,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:24:16,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:24:16,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1401 transitions. [2022-11-18 18:24:16,134 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7115286947689182 [2022-11-18 18:24:16,134 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1401 transitions. [2022-11-18 18:24:16,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1401 transitions. [2022-11-18 18:24:16,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:16,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1401 transitions. [2022-11-18 18:24:16,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 127.36363636363636) internal successors, (1401), 11 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:16,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 179.0) internal successors, (2148), 12 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states 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 18:24:16,145 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 179.0) internal successors, (2148), 12 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states 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 18:24:16,145 INFO L175 Difference]: Start difference. First operand has 250 places, 282 transitions, 1536 flow. Second operand 11 states and 1401 transitions. [2022-11-18 18:24:16,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 402 transitions, 2789 flow [2022-11-18 18:24:16,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 402 transitions, 2716 flow, removed 36 selfloop flow, removed 1 redundant places. [2022-11-18 18:24:16,288 INFO L231 Difference]: Finished difference. Result has 266 places, 319 transitions, 2091 flow [2022-11-18 18:24:16,289 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2091, PETRI_PLACES=266, PETRI_TRANSITIONS=319} [2022-11-18 18:24:16,289 INFO L288 CegarLoopForPetriNet]: 165 programPoint places, 101 predicate places. [2022-11-18 18:24:16,289 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 319 transitions, 2091 flow [2022-11-18 18:24:16,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states 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 18:24:16,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:16,290 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 18:24:16,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:24:16,291 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 18:24:16,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:16,291 INFO L85 PathProgramCache]: Analyzing trace with hash 124868732, now seen corresponding path program 1 times [2022-11-18 18:24:16,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:16,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575757215] [2022-11-18 18:24:16,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:16,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:24:16,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:16,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575757215] [2022-11-18 18:24:16,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575757215] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:24:16,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83916317] [2022-11-18 18:24:16,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:16,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:16,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:16,534 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:24:16,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:24:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:16,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:24:16,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:24:16,763 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:24:16,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 18:24:16,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:24:16,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:24:17,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 18:24:17,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:24:17,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:24:17,231 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_106 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_106) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483647)) is different from false [2022-11-18 18:24:17,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-18 18:24:17,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:24:17,504 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 18:24:17,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-18 18:24:17,510 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2022-11-18 18:24:17,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83916317] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:24:17,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:24:17,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-11-18 18:24:17,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727301044] [2022-11-18 18:24:17,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:24:17,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 18:24:17,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:17,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 18:24:17,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=468, Unknown=1, NotChecked=44, Total=600 [2022-11-18 18:24:17,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 179 [2022-11-18 18:24:17,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 319 transitions, 2091 flow. Second operand has 25 states, 25 states have (on average 109.44) internal successors, (2736), 25 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states 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 18:24:17,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:17,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 179 [2022-11-18 18:24:17,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:22,718 INFO L130 PetriNetUnfolder]: 4020/14692 cut-off events. [2022-11-18 18:24:22,718 INFO L131 PetriNetUnfolder]: For 73186/74453 co-relation queries the response was YES. [2022-11-18 18:24:22,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44872 conditions, 14692 events. 4020/14692 cut-off events. For 73186/74453 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 178958 event pairs, 411 based on Foata normal form. 470/14101 useless extension candidates. Maximal degree in co-relation 44480. Up to 1923 conditions per place. [2022-11-18 18:24:22,956 INFO L137 encePairwiseOnDemand]: 160/179 looper letters, 361 selfloop transitions, 259 changer transitions 0/770 dead transitions. [2022-11-18 18:24:22,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 770 transitions, 7542 flow [2022-11-18 18:24:22,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 18:24:22,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 18:24:22,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3933 transitions. [2022-11-18 18:24:22,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6462372658560631 [2022-11-18 18:24:22,972 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3933 transitions. [2022-11-18 18:24:22,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3933 transitions. [2022-11-18 18:24:22,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:22,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3933 transitions. [2022-11-18 18:24:22,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 115.67647058823529) internal successors, (3933), 34 states have internal predecessors, (3933), 0 states have call successors, (0), 0 states 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 18:24:23,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 179.0) internal successors, (6265), 35 states have internal predecessors, (6265), 0 states have call successors, (0), 0 states 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 18:24:23,022 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 179.0) internal successors, (6265), 35 states have internal predecessors, (6265), 0 states have call successors, (0), 0 states 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 18:24:23,023 INFO L175 Difference]: Start difference. First operand has 266 places, 319 transitions, 2091 flow. Second operand 34 states and 3933 transitions. [2022-11-18 18:24:23,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 770 transitions, 7542 flow [2022-11-18 18:24:23,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 770 transitions, 7288 flow, removed 117 selfloop flow, removed 2 redundant places. [2022-11-18 18:24:23,741 INFO L231 Difference]: Finished difference. Result has 316 places, 528 transitions, 4972 flow [2022-11-18 18:24:23,742 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4972, PETRI_PLACES=316, PETRI_TRANSITIONS=528} [2022-11-18 18:24:23,744 INFO L288 CegarLoopForPetriNet]: 165 programPoint places, 151 predicate places. [2022-11-18 18:24:23,744 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 528 transitions, 4972 flow [2022-11-18 18:24:23,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 109.44) internal successors, (2736), 25 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states 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 18:24:23,745 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:23,746 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] [2022-11-18 18:24:23,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:24:23,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:23,952 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 18:24:23,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:23,953 INFO L85 PathProgramCache]: Analyzing trace with hash -255168780, now seen corresponding path program 1 times [2022-11-18 18:24:23,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:23,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138725634] [2022-11-18 18:24:23,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:23,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:24,474 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 18:24:24,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:24,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138725634] [2022-11-18 18:24:24,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138725634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:24,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:24,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:24:24,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778902025] [2022-11-18 18:24:24,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:24,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:24:24,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:24,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:24:24,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:24:24,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 179 [2022-11-18 18:24:24,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 528 transitions, 4972 flow. Second operand has 13 states, 13 states have (on average 103.23076923076923) internal successors, (1342), 13 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states 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 18:24:24,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:24,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 179 [2022-11-18 18:24:24,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:31,812 INFO L130 PetriNetUnfolder]: 7404/23466 cut-off events. [2022-11-18 18:24:31,812 INFO L131 PetriNetUnfolder]: For 170087/175947 co-relation queries the response was YES. [2022-11-18 18:24:32,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83941 conditions, 23466 events. 7404/23466 cut-off events. For 170087/175947 co-relation queries the response was YES. Maximal size of possible extension queue 1298. Compared 294673 event pairs, 1186 based on Foata normal form. 1279/23298 useless extension candidates. Maximal degree in co-relation 83730. Up to 4997 conditions per place. [2022-11-18 18:24:32,252 INFO L137 encePairwiseOnDemand]: 157/179 looper letters, 498 selfloop transitions, 290 changer transitions 13/925 dead transitions. [2022-11-18 18:24:32,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 925 transitions, 10819 flow [2022-11-18 18:24:32,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 18:24:32,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 18:24:32,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4221 transitions. [2022-11-18 18:24:32,259 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6205527785945311 [2022-11-18 18:24:32,259 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4221 transitions. [2022-11-18 18:24:32,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4221 transitions. [2022-11-18 18:24:32,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:32,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4221 transitions. [2022-11-18 18:24:32,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 111.07894736842105) internal successors, (4221), 38 states have internal predecessors, (4221), 0 states have call successors, (0), 0 states 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 18:24:32,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 179.0) internal successors, (6981), 39 states have internal predecessors, (6981), 0 states have call successors, (0), 0 states 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 18:24:32,281 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 179.0) internal successors, (6981), 39 states have internal predecessors, (6981), 0 states have call successors, (0), 0 states 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 18:24:32,281 INFO L175 Difference]: Start difference. First operand has 316 places, 528 transitions, 4972 flow. Second operand 38 states and 4221 transitions. [2022-11-18 18:24:32,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 925 transitions, 10819 flow [2022-11-18 18:24:34,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 925 transitions, 10038 flow, removed 390 selfloop flow, removed 1 redundant places. [2022-11-18 18:24:34,307 INFO L231 Difference]: Finished difference. Result has 368 places, 610 transitions, 6520 flow [2022-11-18 18:24:34,308 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=4759, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6520, PETRI_PLACES=368, PETRI_TRANSITIONS=610} [2022-11-18 18:24:34,309 INFO L288 CegarLoopForPetriNet]: 165 programPoint places, 203 predicate places. [2022-11-18 18:24:34,309 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 610 transitions, 6520 flow [2022-11-18 18:24:34,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 103.23076923076923) internal successors, (1342), 13 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states 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 18:24:34,310 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:34,311 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] [2022-11-18 18:24:34,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:24:34,311 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 18:24:34,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:34,312 INFO L85 PathProgramCache]: Analyzing trace with hash -120240279, now seen corresponding path program 1 times [2022-11-18 18:24:34,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:34,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001791333] [2022-11-18 18:24:34,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:34,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:24:34,332 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:24:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:24:34,354 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:24:34,354 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:24:34,355 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-18 18:24:34,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-18 18:24:34,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-18 18:24:34,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-18 18:24:34,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-18 18:24:34,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-18 18:24:34,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-18 18:24:34,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-18 18:24:34,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-18 18:24:34,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-18 18:24:34,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-18 18:24:34,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-18 18:24:34,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-18 18:24:34,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-18 18:24:34,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-18 18:24:34,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-18 18:24:34,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-18 18:24:34,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:24:34,359 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:24:34,360 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:24:34,360 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 18:24:34,392 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 18:24:34,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 222 transitions, 474 flow [2022-11-18 18:24:34,500 INFO L130 PetriNetUnfolder]: 50/448 cut-off events. [2022-11-18 18:24:34,500 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 18:24:34,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 448 events. 50/448 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1594 event pairs, 1 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 298. Up to 16 conditions per place. [2022-11-18 18:24:34,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 222 transitions, 474 flow [2022-11-18 18:24:34,517 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 222 transitions, 474 flow [2022-11-18 18:24:34,518 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:24:34,519 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;@1d614f69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:24:34,519 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-18 18:24:34,526 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-18 18:24:34,527 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:24:34,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:34,527 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] [2022-11-18 18:24:34,527 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 18:24:34,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:34,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1541954457, now seen corresponding path program 1 times [2022-11-18 18:24:34,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:34,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252530505] [2022-11-18 18:24:34,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:34,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:34,604 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 18:24:34,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:34,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252530505] [2022-11-18 18:24:34,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252530505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:34,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:34,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:24:34,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158455402] [2022-11-18 18:24:34,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:34,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:24:34,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:34,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:24:34,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:24:34,611 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 222 [2022-11-18 18:24:34,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 222 transitions, 474 flow. Second operand has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states 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 18:24:34,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:34,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 222 [2022-11-18 18:24:34,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:34,766 INFO L130 PetriNetUnfolder]: 7/382 cut-off events. [2022-11-18 18:24:34,766 INFO L131 PetriNetUnfolder]: For 103/272 co-relation queries the response was YES. [2022-11-18 18:24:34,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 382 events. 7/382 cut-off events. For 103/272 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1205 event pairs, 1 based on Foata normal form. 280/618 useless extension candidates. Maximal degree in co-relation 276. Up to 40 conditions per place. [2022-11-18 18:24:34,771 INFO L137 encePairwiseOnDemand]: 192/222 looper letters, 21 selfloop transitions, 4 changer transitions 0/205 dead transitions. [2022-11-18 18:24:34,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 205 transitions, 490 flow [2022-11-18 18:24:34,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:24:34,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:24:34,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 970 transitions. [2022-11-18 18:24:34,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8738738738738738 [2022-11-18 18:24:34,775 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 970 transitions. [2022-11-18 18:24:34,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 970 transitions. [2022-11-18 18:24:34,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:34,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 970 transitions. [2022-11-18 18:24:34,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 194.0) internal successors, (970), 5 states have internal predecessors, (970), 0 states have call successors, (0), 0 states 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 18:24:34,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states 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 18:24:34,781 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states 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 18:24:34,781 INFO L175 Difference]: Start difference. First operand has 203 places, 222 transitions, 474 flow. Second operand 5 states and 970 transitions. [2022-11-18 18:24:34,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 205 transitions, 490 flow [2022-11-18 18:24:34,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 205 transitions, 490 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:24:34,787 INFO L231 Difference]: Finished difference. Result has 209 places, 201 transitions, 458 flow [2022-11-18 18:24:34,788 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=458, PETRI_PLACES=209, PETRI_TRANSITIONS=201} [2022-11-18 18:24:34,788 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, 6 predicate places. [2022-11-18 18:24:34,789 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 201 transitions, 458 flow [2022-11-18 18:24:34,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states 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 18:24:34,789 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:34,790 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] [2022-11-18 18:24:34,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 18:24:34,790 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 18:24:34,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:34,791 INFO L85 PathProgramCache]: Analyzing trace with hash 993232714, now seen corresponding path program 1 times [2022-11-18 18:24:34,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:34,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016348723] [2022-11-18 18:24:34,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:34,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:35,094 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 18:24:35,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:35,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016348723] [2022-11-18 18:24:35,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016348723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:35,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:35,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:24:35,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255806571] [2022-11-18 18:24:35,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:35,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:24:35,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:35,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:24:35,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:24:35,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 222 [2022-11-18 18:24:35,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 201 transitions, 458 flow. Second operand has 10 states, 10 states have (on average 140.4) internal successors, (1404), 10 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:35,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:35,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 222 [2022-11-18 18:24:35,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:42,571 INFO L130 PetriNetUnfolder]: 16590/49069 cut-off events. [2022-11-18 18:24:42,571 INFO L131 PetriNetUnfolder]: For 1920/1920 co-relation queries the response was YES. [2022-11-18 18:24:42,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74500 conditions, 49069 events. 16590/49069 cut-off events. For 1920/1920 co-relation queries the response was YES. Maximal size of possible extension queue 1619. Compared 640337 event pairs, 3671 based on Foata normal form. 0/44730 useless extension candidates. Maximal degree in co-relation 74402. Up to 10208 conditions per place. [2022-11-18 18:24:43,014 INFO L137 encePairwiseOnDemand]: 205/222 looper letters, 272 selfloop transitions, 61 changer transitions 0/473 dead transitions. [2022-11-18 18:24:43,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 473 transitions, 1789 flow [2022-11-18 18:24:43,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:24:43,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 18:24:43,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3359 transitions. [2022-11-18 18:24:43,020 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6877559377559378 [2022-11-18 18:24:43,020 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3359 transitions. [2022-11-18 18:24:43,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3359 transitions. [2022-11-18 18:24:43,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:43,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3359 transitions. [2022-11-18 18:24:43,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 152.6818181818182) internal successors, (3359), 22 states have internal predecessors, (3359), 0 states have call successors, (0), 0 states 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 18:24:43,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 222.0) internal successors, (5106), 23 states have internal predecessors, (5106), 0 states have call successors, (0), 0 states 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 18:24:43,036 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 222.0) internal successors, (5106), 23 states have internal predecessors, (5106), 0 states have call successors, (0), 0 states 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 18:24:43,037 INFO L175 Difference]: Start difference. First operand has 209 places, 201 transitions, 458 flow. Second operand 22 states and 3359 transitions. [2022-11-18 18:24:43,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 473 transitions, 1789 flow [2022-11-18 18:24:43,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 473 transitions, 1787 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:24:43,048 INFO L231 Difference]: Finished difference. Result has 245 places, 278 transitions, 952 flow [2022-11-18 18:24:43,049 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=952, PETRI_PLACES=245, PETRI_TRANSITIONS=278} [2022-11-18 18:24:43,051 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, 42 predicate places. [2022-11-18 18:24:43,051 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 278 transitions, 952 flow [2022-11-18 18:24:43,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 140.4) internal successors, (1404), 10 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:43,052 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:43,052 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] [2022-11-18 18:24:43,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 18:24:43,052 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 18:24:43,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:43,053 INFO L85 PathProgramCache]: Analyzing trace with hash -693250789, now seen corresponding path program 1 times [2022-11-18 18:24:43,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:43,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795730954] [2022-11-18 18:24:43,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:43,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:43,100 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 18:24:43,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:43,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795730954] [2022-11-18 18:24:43,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795730954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:43,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:43,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:24:43,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875632711] [2022-11-18 18:24:43,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:43,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:24:43,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:43,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:24:43,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:24:43,104 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 222 [2022-11-18 18:24:43,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 278 transitions, 952 flow. Second operand has 4 states, 4 states have (on average 183.75) internal successors, (735), 4 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 18:24:43,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:43,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 222 [2022-11-18 18:24:43,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:43,860 INFO L130 PetriNetUnfolder]: 421/3994 cut-off events. [2022-11-18 18:24:43,860 INFO L131 PetriNetUnfolder]: For 4163/4879 co-relation queries the response was YES. [2022-11-18 18:24:43,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6666 conditions, 3994 events. 421/3994 cut-off events. For 4163/4879 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 40620 event pairs, 81 based on Foata normal form. 173/3781 useless extension candidates. Maximal degree in co-relation 6360. Up to 246 conditions per place. [2022-11-18 18:24:43,894 INFO L137 encePairwiseOnDemand]: 216/222 looper letters, 16 selfloop transitions, 8 changer transitions 0/278 dead transitions. [2022-11-18 18:24:43,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 278 transitions, 998 flow [2022-11-18 18:24:43,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:24:43,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:24:43,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 919 transitions. [2022-11-18 18:24:43,897 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8279279279279279 [2022-11-18 18:24:43,897 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 919 transitions. [2022-11-18 18:24:43,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 919 transitions. [2022-11-18 18:24:43,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:43,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 919 transitions. [2022-11-18 18:24:43,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.8) internal successors, (919), 5 states have internal predecessors, (919), 0 states have call successors, (0), 0 states 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 18:24:43,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states 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 18:24:43,905 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states 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 18:24:43,905 INFO L175 Difference]: Start difference. First operand has 245 places, 278 transitions, 952 flow. Second operand 5 states and 919 transitions. [2022-11-18 18:24:43,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 278 transitions, 998 flow [2022-11-18 18:24:43,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 278 transitions, 997 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:24:43,928 INFO L231 Difference]: Finished difference. Result has 248 places, 278 transitions, 971 flow [2022-11-18 18:24:43,929 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=971, PETRI_PLACES=248, PETRI_TRANSITIONS=278} [2022-11-18 18:24:43,930 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, 45 predicate places. [2022-11-18 18:24:43,931 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 278 transitions, 971 flow [2022-11-18 18:24:43,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.75) internal successors, (735), 4 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 18:24:43,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:43,932 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] [2022-11-18 18:24:43,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 18:24:43,932 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 18:24:43,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:43,933 INFO L85 PathProgramCache]: Analyzing trace with hash -15937296, now seen corresponding path program 1 times [2022-11-18 18:24:43,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:43,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122989778] [2022-11-18 18:24:43,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:43,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:44,026 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 18:24:44,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:44,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122989778] [2022-11-18 18:24:44,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122989778] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:24:44,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927763316] [2022-11-18 18:24:44,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:44,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:44,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:44,029 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:24:44,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:24:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:44,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:24:44,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:24:44,197 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 18:24:44,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:24:44,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927763316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:44,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:24:44,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 18:24:44,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104368757] [2022-11-18 18:24:44,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:44,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:24:44,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:44,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:24:44,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:24:44,204 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 222 [2022-11-18 18:24:44,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 278 transitions, 971 flow. Second operand has 6 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:44,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:44,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 222 [2022-11-18 18:24:44,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:45,009 INFO L130 PetriNetUnfolder]: 421/3986 cut-off events. [2022-11-18 18:24:45,009 INFO L131 PetriNetUnfolder]: For 4148/4803 co-relation queries the response was YES. [2022-11-18 18:24:45,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6690 conditions, 3986 events. 421/3986 cut-off events. For 4148/4803 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 40574 event pairs, 81 based on Foata normal form. 79/3679 useless extension candidates. Maximal degree in co-relation 6384. Up to 246 conditions per place. [2022-11-18 18:24:45,056 INFO L137 encePairwiseOnDemand]: 217/222 looper letters, 20 selfloop transitions, 6 changer transitions 0/280 dead transitions. [2022-11-18 18:24:45,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 280 transitions, 1031 flow [2022-11-18 18:24:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:24:45,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:24:45,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1284 transitions. [2022-11-18 18:24:45,059 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8262548262548263 [2022-11-18 18:24:45,059 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1284 transitions. [2022-11-18 18:24:45,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1284 transitions. [2022-11-18 18:24:45,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:45,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1284 transitions. [2022-11-18 18:24:45,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 183.42857142857142) internal successors, (1284), 7 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states 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 18:24:45,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 18:24:45,065 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 18:24:45,066 INFO L175 Difference]: Start difference. First operand has 248 places, 278 transitions, 971 flow. Second operand 7 states and 1284 transitions. [2022-11-18 18:24:45,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 280 transitions, 1031 flow [2022-11-18 18:24:45,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 280 transitions, 1019 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:24:45,090 INFO L231 Difference]: Finished difference. Result has 250 places, 277 transitions, 967 flow [2022-11-18 18:24:45,090 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=967, PETRI_PLACES=250, PETRI_TRANSITIONS=277} [2022-11-18 18:24:45,091 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, 47 predicate places. [2022-11-18 18:24:45,091 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 277 transitions, 967 flow [2022-11-18 18:24:45,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:45,092 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:45,092 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] [2022-11-18 18:24:45,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:24:45,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:45,302 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 18:24:45,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:45,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1509379960, now seen corresponding path program 1 times [2022-11-18 18:24:45,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:45,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892400227] [2022-11-18 18:24:45,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:45,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:45,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:24:45,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:45,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892400227] [2022-11-18 18:24:45,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892400227] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:24:45,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315997732] [2022-11-18 18:24:45,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:45,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:45,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:45,578 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:24:45,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:24:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:45,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:24:45,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:24:45,824 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:24:45,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 18:24:45,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:24:46,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:24:46,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 18:24:46,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:24:46,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:24:46,274 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_180 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_180) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483647)) is different from false [2022-11-18 18:24:46,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-18 18:24:46,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:24:46,431 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 18:24:46,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-18 18:24:46,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2022-11-18 18:24:46,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315997732] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:24:46,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:24:46,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-11-18 18:24:46,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311635699] [2022-11-18 18:24:46,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:24:46,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 18:24:46,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:46,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 18:24:46,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=469, Unknown=5, NotChecked=44, Total=600 [2022-11-18 18:24:46,442 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 222 [2022-11-18 18:24:46,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 277 transitions, 967 flow. Second operand has 25 states, 25 states have (on average 139.32) internal successors, (3483), 25 states have internal predecessors, (3483), 0 states have call successors, (0), 0 states 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 18:24:46,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:46,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 222 [2022-11-18 18:24:46,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:59,370 INFO L130 PetriNetUnfolder]: 24664/71578 cut-off events. [2022-11-18 18:24:59,371 INFO L131 PetriNetUnfolder]: For 90568/93718 co-relation queries the response was YES. [2022-11-18 18:24:59,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149957 conditions, 71578 events. 24664/71578 cut-off events. For 90568/93718 co-relation queries the response was YES. Maximal size of possible extension queue 2421. Compared 984051 event pairs, 2157 based on Foata normal form. 1304/67624 useless extension candidates. Maximal degree in co-relation 147559. Up to 6945 conditions per place. [2022-11-18 18:25:00,317 INFO L137 encePairwiseOnDemand]: 201/222 looper letters, 356 selfloop transitions, 148 changer transitions 0/643 dead transitions. [2022-11-18 18:25:00,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 643 transitions, 3459 flow [2022-11-18 18:25:00,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 18:25:00,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 18:25:00,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4273 transitions. [2022-11-18 18:25:00,329 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6874195624195624 [2022-11-18 18:25:00,330 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4273 transitions. [2022-11-18 18:25:00,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4273 transitions. [2022-11-18 18:25:00,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:25:00,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4273 transitions. [2022-11-18 18:25:00,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 152.60714285714286) internal successors, (4273), 28 states have internal predecessors, (4273), 0 states have call successors, (0), 0 states 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 18:25:00,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 222.0) internal successors, (6438), 29 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states 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 18:25:00,355 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 222.0) internal successors, (6438), 29 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states 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 18:25:00,356 INFO L175 Difference]: Start difference. First operand has 250 places, 277 transitions, 967 flow. Second operand 28 states and 4273 transitions. [2022-11-18 18:25:00,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 643 transitions, 3459 flow [2022-11-18 18:25:02,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 643 transitions, 3448 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 18:25:02,396 INFO L231 Difference]: Finished difference. Result has 288 places, 362 transitions, 1976 flow [2022-11-18 18:25:02,397 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1976, PETRI_PLACES=288, PETRI_TRANSITIONS=362} [2022-11-18 18:25:02,397 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, 85 predicate places. [2022-11-18 18:25:02,397 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 362 transitions, 1976 flow [2022-11-18 18:25:02,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 139.32) internal successors, (3483), 25 states have internal predecessors, (3483), 0 states have call successors, (0), 0 states 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 18:25:02,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:25:02,398 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] [2022-11-18 18:25:02,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:25:02,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b77aa4-1f4c-49b0-b7f3-2e0f635ac4c6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 18:25:02,604 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 18:25:02,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:02,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1142814649, now seen corresponding path program 1 times [2022-11-18 18:25:02,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:02,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698621593] [2022-11-18 18:25:02,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:02,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:02,752 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 18:25:02,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:02,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698621593] [2022-11-18 18:25:02,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698621593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:02,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:02,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:25:02,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275780559] [2022-11-18 18:25:02,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:02,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:25:02,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:02,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:25:02,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:25:02,756 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 222 [2022-11-18 18:25:02,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 362 transitions, 1976 flow. Second operand has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states 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 18:25:02,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:25:02,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 222 [2022-11-18 18:25:02,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand