./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6661931d-a89b-409f-8e77-cd23f7ca83d5/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6661931d-a89b-409f-8e77-cd23f7ca83d5/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6661931d-a89b-409f-8e77-cd23f7ca83d5/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6661931d-a89b-409f-8e77-cd23f7ca83d5/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6661931d-a89b-409f-8e77-cd23f7ca83d5/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6661931d-a89b-409f-8e77-cd23f7ca83d5/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:31:38,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:31:38,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:31:38,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:31:38,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:31:38,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:31:38,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:31:38,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:31:38,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:31:38,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:31:38,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:31:38,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:31:38,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:31:38,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:31:38,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:31:38,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:31:38,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:31:38,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:31:38,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:31:38,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:31:38,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:31:38,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:31:38,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:31:38,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:31:38,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:31:38,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:31:38,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:31:38,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:31:38,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:31:38,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:31:38,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:31:38,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:31:38,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:31:38,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:31:38,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:31:38,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:31:38,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:31:38,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:31:38,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:31:38,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:31:38,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:31:38,550 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6661931d-a89b-409f-8e77-cd23f7ca83d5/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:31:38,576 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:31:38,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:31:38,576 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:31:38,577 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:31:38,577 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:31:38,578 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:31:38,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:31:38,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:31:38,579 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:31:38,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:31:38,580 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:31:38,580 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:31:38,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:31:38,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:31:38,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:31:38,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:31:38,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:31:38,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:31:38,581 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:31:38,582 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:31:38,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:31:38,582 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:31:38,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:31:38,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:31:38,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:31:38,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:31:38,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:31:38,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:31:38,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:31:38,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:31:38,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:31:38,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:31:38,585 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:31:38,585 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:31:38,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:31:38,586 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_6661931d-a89b-409f-8e77-cd23f7ca83d5/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6661931d-a89b-409f-8e77-cd23f7ca83d5/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2022-11-16 11:31:38,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:31:38,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:31:38,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:31:38,911 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:31:38,912 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:31:38,913 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6661931d-a89b-409f-8e77-cd23f7ca83d5/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-11-16 11:31:39,001 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6661931d-a89b-409f-8e77-cd23f7ca83d5/bin/uautomizer-tPACEb0tL8/data/80bd17642/573678ba73ef4bf1b1023df64ba44f05/FLAG8f47b8c9e [2022-11-16 11:31:39,524 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:31:39,525 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6661931d-a89b-409f-8e77-cd23f7ca83d5/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-11-16 11:31:39,538 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6661931d-a89b-409f-8e77-cd23f7ca83d5/bin/uautomizer-tPACEb0tL8/data/80bd17642/573678ba73ef4bf1b1023df64ba44f05/FLAG8f47b8c9e [2022-11-16 11:31:39,822 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6661931d-a89b-409f-8e77-cd23f7ca83d5/bin/uautomizer-tPACEb0tL8/data/80bd17642/573678ba73ef4bf1b1023df64ba44f05 [2022-11-16 11:31:39,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:31:39,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:31:39,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:31:39,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:31:39,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:31:39,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:31:39" (1/1) ... [2022-11-16 11:31:39,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3158052c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:39, skipping insertion in model container [2022-11-16 11:31:39,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:31:39" (1/1) ... [2022-11-16 11:31:39,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:31:39,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:31:40,141 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6661931d-a89b-409f-8e77-cd23f7ca83d5/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2022-11-16 11:31:40,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:31:40,398 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:31:40,414 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6661931d-a89b-409f-8e77-cd23f7ca83d5/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2022-11-16 11:31:40,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:31:40,507 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:31:40,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:40 WrapperNode [2022-11-16 11:31:40,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:31:40,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:31:40,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:31:40,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:31:40,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:40" (1/1) ... [2022-11-16 11:31:40,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:40" (1/1) ... [2022-11-16 11:31:40,586 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 124 [2022-11-16 11:31:40,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:31:40,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:31:40,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:31:40,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:31:40,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:40" (1/1) ... [2022-11-16 11:31:40,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:40" (1/1) ... [2022-11-16 11:31:40,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:40" (1/1) ... [2022-11-16 11:31:40,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:40" (1/1) ... [2022-11-16 11:31:40,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:40" (1/1) ... [2022-11-16 11:31:40,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:40" (1/1) ... [2022-11-16 11:31:40,642 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:40" (1/1) ... [2022-11-16 11:31:40,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:40" (1/1) ... [2022-11-16 11:31:40,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:31:40,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:31:40,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:31:40,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:31:40,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:40" (1/1) ... [2022-11-16 11:31:40,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:31:40,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6661931d-a89b-409f-8e77-cd23f7ca83d5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:31:40,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6661931d-a89b-409f-8e77-cd23f7ca83d5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:31:40,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6661931d-a89b-409f-8e77-cd23f7ca83d5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:31:40,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:31:40,722 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-11-16 11:31:40,723 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-11-16 11:31:40,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:31:40,723 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:31:40,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:31:40,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:31:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:31:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:31:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:31:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:31:40,726 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:31:40,949 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:31:40,951 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:31:41,179 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:31:41,187 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:31:41,203 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 11:31:41,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:31:41 BoogieIcfgContainer [2022-11-16 11:31:41,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:31:41,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:31:41,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:31:41,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:31:41,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:31:39" (1/3) ... [2022-11-16 11:31:41,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443d27e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:31:41, skipping insertion in model container [2022-11-16 11:31:41,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:40" (2/3) ... [2022-11-16 11:31:41,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443d27e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:31:41, skipping insertion in model container [2022-11-16 11:31:41,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:31:41" (3/3) ... [2022-11-16 11:31:41,216 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-11-16 11:31:41,225 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:31:41,250 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:31:41,250 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 11:31:41,250 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:31:41,321 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:31:41,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 152 transitions, 309 flow [2022-11-16 11:31:41,465 INFO L130 PetriNetUnfolder]: 10/151 cut-off events. [2022-11-16 11:31:41,465 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:31:41,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 151 events. 10/151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 268 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. [2022-11-16 11:31:41,473 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 152 transitions, 309 flow [2022-11-16 11:31:41,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 151 transitions, 305 flow [2022-11-16 11:31:41,489 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:31:41,496 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;@52da26c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:31:41,497 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-16 11:31:41,528 INFO L130 PetriNetUnfolder]: 3/97 cut-off events. [2022-11-16 11:31:41,528 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:31:41,529 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:31:41,529 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] [2022-11-16 11:31:41,530 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:31:41,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:41,536 INFO L85 PathProgramCache]: Analyzing trace with hash 776007129, now seen corresponding path program 1 times [2022-11-16 11:31:41,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:31:41,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975995883] [2022-11-16 11:31:41,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:41,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:31:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:42,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:42,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:31:42,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975995883] [2022-11-16 11:31:42,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975995883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:31:42,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:31:42,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:31:42,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559850611] [2022-11-16 11:31:42,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:31:42,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:31:42,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:31:42,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:31:42,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:31:42,131 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 152 [2022-11-16 11:31:42,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 151 transitions, 305 flow. Second operand has 6 states, 6 states have (on average 112.33333333333333) internal successors, (674), 6 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:42,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:31:42,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 152 [2022-11-16 11:31:42,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:31:42,685 INFO L130 PetriNetUnfolder]: 239/1130 cut-off events. [2022-11-16 11:31:42,686 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:31:42,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1583 conditions, 1130 events. 239/1130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 6925 event pairs, 65 based on Foata normal form. 98/1088 useless extension candidates. Maximal degree in co-relation 1526. Up to 238 conditions per place. [2022-11-16 11:31:42,699 INFO L137 encePairwiseOnDemand]: 134/152 looper letters, 84 selfloop transitions, 16 changer transitions 0/206 dead transitions. [2022-11-16 11:31:42,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 206 transitions, 615 flow [2022-11-16 11:31:42,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:31:42,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:31:42,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1238 transitions. [2022-11-16 11:31:42,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8144736842105263 [2022-11-16 11:31:42,726 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1238 transitions. [2022-11-16 11:31:42,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1238 transitions. [2022-11-16 11:31:42,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:31:42,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1238 transitions. [2022-11-16 11:31:42,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 123.8) internal successors, (1238), 10 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:42,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:42,755 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:42,757 INFO L175 Difference]: Start difference. First operand has 145 places, 151 transitions, 305 flow. Second operand 10 states and 1238 transitions. [2022-11-16 11:31:42,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 206 transitions, 615 flow [2022-11-16 11:31:42,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 206 transitions, 614 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:31:42,770 INFO L231 Difference]: Finished difference. Result has 155 places, 159 transitions, 409 flow [2022-11-16 11:31:42,772 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=409, PETRI_PLACES=155, PETRI_TRANSITIONS=159} [2022-11-16 11:31:42,776 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 10 predicate places. [2022-11-16 11:31:42,777 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 159 transitions, 409 flow [2022-11-16 11:31:42,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.33333333333333) internal successors, (674), 6 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:42,778 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:31:42,779 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] [2022-11-16 11:31:42,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:31:42,780 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:31:42,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:42,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1713582480, now seen corresponding path program 1 times [2022-11-16 11:31:42,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:31:42,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373634070] [2022-11-16 11:31:42,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:42,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:31:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:43,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:43,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:31:43,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373634070] [2022-11-16 11:31:43,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373634070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:31:43,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:31:43,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:31:43,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242609172] [2022-11-16 11:31:43,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:31:43,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:31:43,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:31:43,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:31:43,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:31:43,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 152 [2022-11-16 11:31:43,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 159 transitions, 409 flow. Second operand has 16 states, 16 states have (on average 95.125) internal successors, (1522), 16 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:43,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:31:43,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 152 [2022-11-16 11:31:43,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:31:45,272 INFO L130 PetriNetUnfolder]: 558/2485 cut-off events. [2022-11-16 11:31:45,272 INFO L131 PetriNetUnfolder]: For 302/305 co-relation queries the response was YES. [2022-11-16 11:31:45,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4011 conditions, 2485 events. 558/2485 cut-off events. For 302/305 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 17832 event pairs, 56 based on Foata normal form. 21/2271 useless extension candidates. Maximal degree in co-relation 3936. Up to 457 conditions per place. [2022-11-16 11:31:45,290 INFO L137 encePairwiseOnDemand]: 130/152 looper letters, 166 selfloop transitions, 44 changer transitions 0/300 dead transitions. [2022-11-16 11:31:45,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 300 transitions, 1212 flow [2022-11-16 11:31:45,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:31:45,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:31:45,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2139 transitions. [2022-11-16 11:31:45,296 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6701127819548872 [2022-11-16 11:31:45,296 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2139 transitions. [2022-11-16 11:31:45,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2139 transitions. [2022-11-16 11:31:45,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:31:45,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2139 transitions. [2022-11-16 11:31:45,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 101.85714285714286) internal successors, (2139), 21 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:45,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:45,313 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:45,314 INFO L175 Difference]: Start difference. First operand has 155 places, 159 transitions, 409 flow. Second operand 21 states and 2139 transitions. [2022-11-16 11:31:45,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 300 transitions, 1212 flow [2022-11-16 11:31:45,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 300 transitions, 1212 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:31:45,331 INFO L231 Difference]: Finished difference. Result has 187 places, 193 transitions, 754 flow [2022-11-16 11:31:45,331 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=754, PETRI_PLACES=187, PETRI_TRANSITIONS=193} [2022-11-16 11:31:45,332 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 42 predicate places. [2022-11-16 11:31:45,332 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 193 transitions, 754 flow [2022-11-16 11:31:45,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 95.125) internal successors, (1522), 16 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:45,334 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:31:45,335 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:31:45,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:31:45,336 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:31:45,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:45,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1057699436, now seen corresponding path program 1 times [2022-11-16 11:31:45,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:31:45,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52117905] [2022-11-16 11:31:45,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:45,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:31:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:45,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:45,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:31:45,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52117905] [2022-11-16 11:31:45,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52117905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:31:45,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:31:45,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:31:45,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478823033] [2022-11-16 11:31:45,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:31:45,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 11:31:45,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:31:45,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 11:31:45,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:31:45,933 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 152 [2022-11-16 11:31:45,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 193 transitions, 754 flow. Second operand has 15 states, 15 states have (on average 91.46666666666667) internal successors, (1372), 15 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:45,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:31:45,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 152 [2022-11-16 11:31:45,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:31:47,326 INFO L130 PetriNetUnfolder]: 533/2967 cut-off events. [2022-11-16 11:31:47,326 INFO L131 PetriNetUnfolder]: For 1807/1878 co-relation queries the response was YES. [2022-11-16 11:31:47,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5806 conditions, 2967 events. 533/2967 cut-off events. For 1807/1878 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 22297 event pairs, 134 based on Foata normal form. 64/2726 useless extension candidates. Maximal degree in co-relation 5781. Up to 762 conditions per place. [2022-11-16 11:31:47,347 INFO L137 encePairwiseOnDemand]: 137/152 looper letters, 124 selfloop transitions, 24 changer transitions 27/278 dead transitions. [2022-11-16 11:31:47,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 278 transitions, 1380 flow [2022-11-16 11:31:47,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:31:47,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:31:47,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2026 transitions. [2022-11-16 11:31:47,354 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6347117794486216 [2022-11-16 11:31:47,354 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2026 transitions. [2022-11-16 11:31:47,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2026 transitions. [2022-11-16 11:31:47,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:31:47,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2026 transitions. [2022-11-16 11:31:47,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 96.47619047619048) internal successors, (2026), 21 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:47,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:47,368 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:47,369 INFO L175 Difference]: Start difference. First operand has 187 places, 193 transitions, 754 flow. Second operand 21 states and 2026 transitions. [2022-11-16 11:31:47,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 278 transitions, 1380 flow [2022-11-16 11:31:47,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 278 transitions, 1354 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-16 11:31:47,395 INFO L231 Difference]: Finished difference. Result has 210 places, 195 transitions, 794 flow [2022-11-16 11:31:47,396 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=794, PETRI_PLACES=210, PETRI_TRANSITIONS=195} [2022-11-16 11:31:47,398 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 65 predicate places. [2022-11-16 11:31:47,398 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 195 transitions, 794 flow [2022-11-16 11:31:47,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 91.46666666666667) internal successors, (1372), 15 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:47,400 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:31:47,401 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:31:47,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:31:47,401 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:31:47,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:47,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1529392297, now seen corresponding path program 1 times [2022-11-16 11:31:47,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:31:47,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627556721] [2022-11-16 11:31:47,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:47,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:31:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:47,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:31:47,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627556721] [2022-11-16 11:31:47,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627556721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:31:47,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:31:47,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:31:47,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171241031] [2022-11-16 11:31:47,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:31:47,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:31:47,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:31:47,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:31:47,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:31:47,510 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 152 [2022-11-16 11:31:47,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 195 transitions, 794 flow. Second operand has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:47,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:31:47,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 152 [2022-11-16 11:31:47,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:31:47,839 INFO L130 PetriNetUnfolder]: 104/1436 cut-off events. [2022-11-16 11:31:47,839 INFO L131 PetriNetUnfolder]: For 463/495 co-relation queries the response was YES. [2022-11-16 11:31:47,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2413 conditions, 1436 events. 104/1436 cut-off events. For 463/495 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 8907 event pairs, 2 based on Foata normal form. 9/1352 useless extension candidates. Maximal degree in co-relation 2328. Up to 135 conditions per place. [2022-11-16 11:31:47,852 INFO L137 encePairwiseOnDemand]: 146/152 looper letters, 15 selfloop transitions, 4 changer transitions 0/202 dead transitions. [2022-11-16 11:31:47,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 202 transitions, 846 flow [2022-11-16 11:31:47,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:31:47,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:31:47,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 681 transitions. [2022-11-16 11:31:47,854 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8960526315789473 [2022-11-16 11:31:47,855 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 681 transitions. [2022-11-16 11:31:47,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 681 transitions. [2022-11-16 11:31:47,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:31:47,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 681 transitions. [2022-11-16 11:31:47,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:47,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:47,863 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:47,864 INFO L175 Difference]: Start difference. First operand has 210 places, 195 transitions, 794 flow. Second operand 5 states and 681 transitions. [2022-11-16 11:31:47,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 202 transitions, 846 flow [2022-11-16 11:31:47,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 202 transitions, 827 flow, removed 4 selfloop flow, removed 9 redundant places. [2022-11-16 11:31:47,875 INFO L231 Difference]: Finished difference. Result has 203 places, 198 transitions, 805 flow [2022-11-16 11:31:47,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=805, PETRI_PLACES=203, PETRI_TRANSITIONS=198} [2022-11-16 11:31:47,877 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 58 predicate places. [2022-11-16 11:31:47,877 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 198 transitions, 805 flow [2022-11-16 11:31:47,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:47,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:31:47,883 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:31:47,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:31:47,884 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:31:47,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:47,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1386784249, now seen corresponding path program 1 times [2022-11-16 11:31:47,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:31:47,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414733761] [2022-11-16 11:31:47,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:47,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:31:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:48,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:48,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:31:48,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414733761] [2022-11-16 11:31:48,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414733761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:31:48,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:31:48,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:31:48,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155425527] [2022-11-16 11:31:48,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:31:48,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:31:48,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:31:48,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:31:48,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:31:48,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 152 [2022-11-16 11:31:48,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 198 transitions, 805 flow. Second operand has 11 states, 11 states have (on average 96.27272727272727) internal successors, (1059), 11 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:48,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:31:48,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 152 [2022-11-16 11:31:48,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:31:52,135 INFO L130 PetriNetUnfolder]: 2746/10326 cut-off events. [2022-11-16 11:31:52,135 INFO L131 PetriNetUnfolder]: For 8291/8472 co-relation queries the response was YES. [2022-11-16 11:31:52,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23397 conditions, 10326 events. 2746/10326 cut-off events. For 8291/8472 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 97785 event pairs, 365 based on Foata normal form. 150/10010 useless extension candidates. Maximal degree in co-relation 23306. Up to 1508 conditions per place. [2022-11-16 11:31:52,247 INFO L137 encePairwiseOnDemand]: 132/152 looper letters, 495 selfloop transitions, 161 changer transitions 0/760 dead transitions. [2022-11-16 11:31:52,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 760 transitions, 4783 flow [2022-11-16 11:31:52,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:31:52,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:31:52,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3815 transitions. [2022-11-16 11:31:52,258 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6971856725146199 [2022-11-16 11:31:52,258 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3815 transitions. [2022-11-16 11:31:52,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3815 transitions. [2022-11-16 11:31:52,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:31:52,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3815 transitions. [2022-11-16 11:31:52,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 105.97222222222223) internal successors, (3815), 36 states have internal predecessors, (3815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:52,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 152.0) internal successors, (5624), 37 states have internal predecessors, (5624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:52,284 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 152.0) internal successors, (5624), 37 states have internal predecessors, (5624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:52,284 INFO L175 Difference]: Start difference. First operand has 203 places, 198 transitions, 805 flow. Second operand 36 states and 3815 transitions. [2022-11-16 11:31:52,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 760 transitions, 4783 flow [2022-11-16 11:31:52,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 760 transitions, 4781 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:31:52,340 INFO L231 Difference]: Finished difference. Result has 268 places, 374 transitions, 2573 flow [2022-11-16 11:31:52,341 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2573, PETRI_PLACES=268, PETRI_TRANSITIONS=374} [2022-11-16 11:31:52,341 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 123 predicate places. [2022-11-16 11:31:52,342 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 374 transitions, 2573 flow [2022-11-16 11:31:52,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 96.27272727272727) internal successors, (1059), 11 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:52,342 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:31:52,343 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:31:52,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:31:52,343 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:31:52,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:52,344 INFO L85 PathProgramCache]: Analyzing trace with hash 284602123, now seen corresponding path program 2 times [2022-11-16 11:31:52,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:31:52,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471900176] [2022-11-16 11:31:52,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:52,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:31:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:52,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:52,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:31:52,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471900176] [2022-11-16 11:31:52,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471900176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:31:52,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:31:52,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:31:52,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886994043] [2022-11-16 11:31:52,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:31:52,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:31:52,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:31:52,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:31:52,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:31:52,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 152 [2022-11-16 11:31:52,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 374 transitions, 2573 flow. Second operand has 11 states, 11 states have (on average 96.27272727272727) internal successors, (1059), 11 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:52,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:31:52,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 152 [2022-11-16 11:31:52,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:31:57,487 INFO L130 PetriNetUnfolder]: 4039/15054 cut-off events. [2022-11-16 11:31:57,488 INFO L131 PetriNetUnfolder]: For 46129/46529 co-relation queries the response was YES. [2022-11-16 11:31:57,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45823 conditions, 15054 events. 4039/15054 cut-off events. For 46129/46529 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 155309 event pairs, 577 based on Foata normal form. 258/14925 useless extension candidates. Maximal degree in co-relation 45701. Up to 3376 conditions per place. [2022-11-16 11:31:57,631 INFO L137 encePairwiseOnDemand]: 133/152 looper letters, 562 selfloop transitions, 208 changer transitions 0/874 dead transitions. [2022-11-16 11:31:57,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 874 transitions, 8017 flow [2022-11-16 11:31:57,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 11:31:57,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-16 11:31:57,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2776 transitions. [2022-11-16 11:31:57,638 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7024291497975709 [2022-11-16 11:31:57,638 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2776 transitions. [2022-11-16 11:31:57,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2776 transitions. [2022-11-16 11:31:57,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:31:57,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2776 transitions. [2022-11-16 11:31:57,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 106.76923076923077) internal successors, (2776), 26 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:57,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:57,654 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:57,654 INFO L175 Difference]: Start difference. First operand has 268 places, 374 transitions, 2573 flow. Second operand 26 states and 2776 transitions. [2022-11-16 11:31:57,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 874 transitions, 8017 flow [2022-11-16 11:31:57,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 874 transitions, 7933 flow, removed 42 selfloop flow, removed 0 redundant places. [2022-11-16 11:31:57,977 INFO L231 Difference]: Finished difference. Result has 315 places, 537 transitions, 4987 flow [2022-11-16 11:31:57,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2519, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4987, PETRI_PLACES=315, PETRI_TRANSITIONS=537} [2022-11-16 11:31:57,978 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 170 predicate places. [2022-11-16 11:31:57,978 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 537 transitions, 4987 flow [2022-11-16 11:31:57,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 96.27272727272727) internal successors, (1059), 11 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:57,979 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:31:57,979 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:31:57,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:31:57,979 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:31:57,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:57,980 INFO L85 PathProgramCache]: Analyzing trace with hash 622819631, now seen corresponding path program 3 times [2022-11-16 11:31:57,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:31:57,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276160345] [2022-11-16 11:31:57,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:57,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:31:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:58,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:31:58,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276160345] [2022-11-16 11:31:58,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276160345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:31:58,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:31:58,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:31:58,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850069574] [2022-11-16 11:31:58,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:31:58,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:31:58,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:31:58,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:31:58,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:31:58,318 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 152 [2022-11-16 11:31:58,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 537 transitions, 4987 flow. Second operand has 11 states, 11 states have (on average 96.27272727272727) internal successors, (1059), 11 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:58,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:31:58,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 152 [2022-11-16 11:31:58,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:32:08,035 INFO L130 PetriNetUnfolder]: 7958/29387 cut-off events. [2022-11-16 11:32:08,035 INFO L131 PetriNetUnfolder]: For 174417/175434 co-relation queries the response was YES. [2022-11-16 11:32:08,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105883 conditions, 29387 events. 7958/29387 cut-off events. For 174417/175434 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 338134 event pairs, 1927 based on Foata normal form. 550/29064 useless extension candidates. Maximal degree in co-relation 105739. Up to 4239 conditions per place. [2022-11-16 11:32:08,420 INFO L137 encePairwiseOnDemand]: 133/152 looper letters, 826 selfloop transitions, 454 changer transitions 0/1384 dead transitions. [2022-11-16 11:32:08,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 1384 transitions, 16532 flow [2022-11-16 11:32:08,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:32:08,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 11:32:08,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3393 transitions. [2022-11-16 11:32:08,430 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6975740131578947 [2022-11-16 11:32:08,431 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3393 transitions. [2022-11-16 11:32:08,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3393 transitions. [2022-11-16 11:32:08,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:32:08,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3393 transitions. [2022-11-16 11:32:08,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 106.03125) internal successors, (3393), 32 states have internal predecessors, (3393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:08,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 152.0) internal successors, (5016), 33 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:08,469 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 152.0) internal successors, (5016), 33 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:08,469 INFO L175 Difference]: Start difference. First operand has 315 places, 537 transitions, 4987 flow. Second operand 32 states and 3393 transitions. [2022-11-16 11:32:08,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 1384 transitions, 16532 flow [2022-11-16 11:32:10,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 1384 transitions, 15612 flow, removed 460 selfloop flow, removed 0 redundant places. [2022-11-16 11:32:10,353 INFO L231 Difference]: Finished difference. Result has 376 places, 900 transitions, 11111 flow [2022-11-16 11:32:10,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=4599, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=11111, PETRI_PLACES=376, PETRI_TRANSITIONS=900} [2022-11-16 11:32:10,354 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 231 predicate places. [2022-11-16 11:32:10,354 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 900 transitions, 11111 flow [2022-11-16 11:32:10,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 96.27272727272727) internal successors, (1059), 11 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:10,354 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:32:10,355 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:32:10,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:32:10,355 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:32:10,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:10,355 INFO L85 PathProgramCache]: Analyzing trace with hash 402086713, now seen corresponding path program 4 times [2022-11-16 11:32:10,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:10,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629567652] [2022-11-16 11:32:10,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:10,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:10,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:10,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629567652] [2022-11-16 11:32:10,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629567652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:10,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:10,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:32:10,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549930256] [2022-11-16 11:32:10,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:10,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:32:10,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:10,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:32:10,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:32:10,659 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 152 [2022-11-16 11:32:10,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 900 transitions, 11111 flow. Second operand has 11 states, 11 states have (on average 96.27272727272727) internal successors, (1059), 11 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:10,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:32:10,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 152 [2022-11-16 11:32:10,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:32:26,594 INFO L130 PetriNetUnfolder]: 10813/40382 cut-off events. [2022-11-16 11:32:26,594 INFO L131 PetriNetUnfolder]: For 387310/388835 co-relation queries the response was YES. [2022-11-16 11:32:27,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162082 conditions, 40382 events. 10813/40382 cut-off events. For 387310/388835 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 488185 event pairs, 2550 based on Foata normal form. 694/39883 useless extension candidates. Maximal degree in co-relation 161907. Up to 4801 conditions per place. [2022-11-16 11:32:27,243 INFO L137 encePairwiseOnDemand]: 133/152 looper letters, 1134 selfloop transitions, 559 changer transitions 0/1797 dead transitions. [2022-11-16 11:32:27,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 1797 transitions, 25256 flow [2022-11-16 11:32:27,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 11:32:27,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-16 11:32:27,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2928 transitions. [2022-11-16 11:32:27,254 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7134502923976608 [2022-11-16 11:32:27,254 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2928 transitions. [2022-11-16 11:32:27,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2928 transitions. [2022-11-16 11:32:27,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:32:27,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2928 transitions. [2022-11-16 11:32:27,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 108.44444444444444) internal successors, (2928), 27 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:27,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:27,278 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:27,278 INFO L175 Difference]: Start difference. First operand has 376 places, 900 transitions, 11111 flow. Second operand 27 states and 2928 transitions. [2022-11-16 11:32:27,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 1797 transitions, 25256 flow [2022-11-16 11:32:32,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 1797 transitions, 24292 flow, removed 480 selfloop flow, removed 1 redundant places. [2022-11-16 11:32:32,349 INFO L231 Difference]: Finished difference. Result has 423 places, 1243 transitions, 18121 flow [2022-11-16 11:32:32,350 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=10397, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=900, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=18121, PETRI_PLACES=423, PETRI_TRANSITIONS=1243} [2022-11-16 11:32:32,351 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 278 predicate places. [2022-11-16 11:32:32,351 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 1243 transitions, 18121 flow [2022-11-16 11:32:32,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 96.27272727272727) internal successors, (1059), 11 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:32,352 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:32:32,352 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:32:32,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:32:32,352 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-16 11:32:32,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:32:32,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1462628667, now seen corresponding path program 5 times [2022-11-16 11:32:32,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:32:32,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050602190] [2022-11-16 11:32:32,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:32:32,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:32:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:32:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:32:32,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:32:32,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050602190] [2022-11-16 11:32:32,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050602190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:32:32,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:32:32,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:32:32,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627921545] [2022-11-16 11:32:32,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:32:32,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:32:32,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:32:32,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:32:32,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:32:32,629 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 152 [2022-11-16 11:32:32,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 1243 transitions, 18121 flow. Second operand has 11 states, 11 states have (on average 96.27272727272727) internal successors, (1059), 11 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:32,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:32:32,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 152 [2022-11-16 11:32:32,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:32:54,179 INFO L130 PetriNetUnfolder]: 11624/42296 cut-off events. [2022-11-16 11:32:54,179 INFO L131 PetriNetUnfolder]: For 570078/571854 co-relation queries the response was YES. [2022-11-16 11:32:54,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186278 conditions, 42296 events. 11624/42296 cut-off events. For 570078/571854 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 512955 event pairs, 2974 based on Foata normal form. 836/41901 useless extension candidates. Maximal degree in co-relation 186081. Up to 9541 conditions per place. [2022-11-16 11:32:54,855 INFO L137 encePairwiseOnDemand]: 132/152 looper letters, 1186 selfloop transitions, 648 changer transitions 0/1938 dead transitions. [2022-11-16 11:32:54,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 1938 transitions, 30867 flow [2022-11-16 11:32:54,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:32:54,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:32:54,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3843 transitions. [2022-11-16 11:32:54,862 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7023026315789473 [2022-11-16 11:32:54,862 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3843 transitions. [2022-11-16 11:32:54,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3843 transitions. [2022-11-16 11:32:54,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:32:54,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3843 transitions. [2022-11-16 11:32:54,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 106.75) internal successors, (3843), 36 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:54,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 152.0) internal successors, (5624), 37 states have internal predecessors, (5624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:54,881 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 152.0) internal successors, (5624), 37 states have internal predecessors, (5624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:54,881 INFO L175 Difference]: Start difference. First operand has 423 places, 1243 transitions, 18121 flow. Second operand 36 states and 3843 transitions. [2022-11-16 11:32:54,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 1938 transitions, 30867 flow