./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a --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 dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --- 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-b5237d8 [2022-11-21 13:58:56,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:58:56,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:58:56,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:58:56,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:58:56,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:58:56,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:58:56,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:58:56,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:58:56,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:58:56,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:58:56,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:58:56,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:58:56,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:58:56,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:58:56,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:58:56,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:58:56,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:58:56,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:58:56,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:58:56,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:58:56,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:58:56,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:58:56,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:58:56,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:58:56,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:58:56,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:58:56,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:58:56,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:58:56,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:58:56,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:58:56,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:58:56,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:58:56,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:58:56,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:58:56,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:58:56,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:58:56,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:58:56,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:58:56,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:58:56,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:58:56,708 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 13:58:56,731 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:58:56,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:58:56,732 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:58:56,732 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:58:56,733 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:58:56,733 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:58:56,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:58:56,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:58:56,735 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:58:56,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:58:56,735 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:58:56,735 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 13:58:56,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:58:56,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:58:56,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:58:56,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:58:56,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:58:56,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:58:56,737 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 13:58:56,738 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:58:56,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:58:56,738 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:58:56,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:58:56,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:58:56,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:58:56,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:58:56,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:58:56,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:58:56,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:58:56,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:58:56,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:58:56,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:58:56,741 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:58:56,741 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:58:56,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:58:56,741 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_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 [2022-11-21 13:58:56,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:58:57,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:58:57,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:58:57,018 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:58:57,018 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:58:57,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2022-11-21 13:59:00,301 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:59:00,691 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:59:00,706 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2022-11-21 13:59:00,731 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/data/cae8352f9/6888deb94e99437b8d028aecdd8b835f/FLAG6c79f5bda [2022-11-21 13:59:00,761 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/data/cae8352f9/6888deb94e99437b8d028aecdd8b835f [2022-11-21 13:59:00,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:59:00,774 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:59:00,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:59:00,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:59:00,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:59:00,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:59:00" (1/1) ... [2022-11-21 13:59:00,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa96a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:00, skipping insertion in model container [2022-11-21 13:59:00,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:59:00" (1/1) ... [2022-11-21 13:59:00,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:59:00,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:59:01,331 WARN L237 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_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2022-11-21 13:59:01,343 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 13:59:01,344 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 13:59:01,345 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 13:59:01,345 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 13:59:01,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:59:01,393 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:59:01,431 WARN L237 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_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2022-11-21 13:59:01,435 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 13:59:01,439 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 13:59:01,439 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 13:59:01,442 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 13:59:01,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:59:01,530 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:59:01,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:01 WrapperNode [2022-11-21 13:59:01,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:59:01,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:59:01,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:59:01,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:59:01,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:01" (1/1) ... [2022-11-21 13:59:01,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:01" (1/1) ... [2022-11-21 13:59:01,608 INFO L138 Inliner]: procedures = 279, calls = 51, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 239 [2022-11-21 13:59:01,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:59:01,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:59:01,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:59:01,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:59:01,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:01" (1/1) ... [2022-11-21 13:59:01,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:01" (1/1) ... [2022-11-21 13:59:01,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:01" (1/1) ... [2022-11-21 13:59:01,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:01" (1/1) ... [2022-11-21 13:59:01,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:01" (1/1) ... [2022-11-21 13:59:01,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:01" (1/1) ... [2022-11-21 13:59:01,653 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:01" (1/1) ... [2022-11-21 13:59:01,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:01" (1/1) ... [2022-11-21 13:59:01,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:59:01,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:59:01,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:59:01,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:59:01,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:01" (1/1) ... [2022-11-21 13:59:01,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:59:01,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:01,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:59:01,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:59:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 13:59:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 13:59:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 13:59:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 13:59:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 13:59:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-21 13:59:01,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 13:59:01,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:59:01,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 13:59:01,752 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-21 13:59:01,752 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-21 13:59:01,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:59:01,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:59:01,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:59:01,754 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 13:59:01,964 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:59:01,966 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:59:02,580 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:59:02,595 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:59:02,595 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-21 13:59:02,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:59:02 BoogieIcfgContainer [2022-11-21 13:59:02,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:59:02,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:59:02,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:59:02,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:59:02,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:59:00" (1/3) ... [2022-11-21 13:59:02,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d7f922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:59:02, skipping insertion in model container [2022-11-21 13:59:02,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:01" (2/3) ... [2022-11-21 13:59:02,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d7f922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:59:02, skipping insertion in model container [2022-11-21 13:59:02,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:59:02" (3/3) ... [2022-11-21 13:59:02,607 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2022-11-21 13:59:02,621 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 13:59:02,631 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:59:02,631 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-21 13:59:02,631 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 13:59:02,714 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-21 13:59:02,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 287 transitions, 582 flow [2022-11-21 13:59:02,954 INFO L130 PetriNetUnfolder]: 29/304 cut-off events. [2022-11-21 13:59:02,954 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-21 13:59:02,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 304 events. 29/304 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 751 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 167. Up to 4 conditions per place. [2022-11-21 13:59:02,961 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 287 transitions, 582 flow [2022-11-21 13:59:02,969 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 284 transitions, 576 flow [2022-11-21 13:59:02,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:59:02,987 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;@4c62e823, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:59:02,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-21 13:59:03,016 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-21 13:59:03,016 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 13:59:03,016 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:59:03,017 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] [2022-11-21 13:59:03,018 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 13:59:03,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:03,030 INFO L85 PathProgramCache]: Analyzing trace with hash 649472060, now seen corresponding path program 1 times [2022-11-21 13:59:03,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:03,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864441826] [2022-11-21 13:59:03,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:03,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:03,250 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:03,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305936657] [2022-11-21 13:59:03,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:03,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:03,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:03,258 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:03,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:59:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:03,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:59:03,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:59:03,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:59:03,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:03,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864441826] [2022-11-21 13:59:03,525 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:03,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305936657] [2022-11-21 13:59:03,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305936657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:59:03,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:59:03,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:59:03,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470332517] [2022-11-21 13:59:03,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:59:03,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:59:03,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:03,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:59:03,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:59:03,584 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 287 [2022-11-21 13:59:03,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 284 transitions, 576 flow. Second operand has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:03,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:59:03,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 287 [2022-11-21 13:59:03,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:59:03,722 INFO L130 PetriNetUnfolder]: 7/338 cut-off events. [2022-11-21 13:59:03,722 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-21 13:59:03,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 338 events. 7/338 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 836 event pairs, 0 based on Foata normal form. 22/326 useless extension candidates. Maximal degree in co-relation 244. Up to 17 conditions per place. [2022-11-21 13:59:03,726 INFO L137 encePairwiseOnDemand]: 262/287 looper letters, 23 selfloop transitions, 2 changer transitions 2/272 dead transitions. [2022-11-21 13:59:03,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 272 transitions, 602 flow [2022-11-21 13:59:03,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:59:03,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 13:59:03,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 800 transitions. [2022-11-21 13:59:03,743 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9291521486643438 [2022-11-21 13:59:03,744 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 800 transitions. [2022-11-21 13:59:03,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 800 transitions. [2022-11-21 13:59:03,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:59:03,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 800 transitions. [2022-11-21 13:59:03,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:03,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:03,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:03,776 INFO L175 Difference]: Start difference. First operand has 261 places, 284 transitions, 576 flow. Second operand 3 states and 800 transitions. [2022-11-21 13:59:03,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 272 transitions, 602 flow [2022-11-21 13:59:03,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 272 transitions, 602 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 13:59:03,793 INFO L231 Difference]: Finished difference. Result has 263 places, 262 transitions, 546 flow [2022-11-21 13:59:03,799 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=546, PETRI_PLACES=263, PETRI_TRANSITIONS=262} [2022-11-21 13:59:03,806 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 2 predicate places. [2022-11-21 13:59:03,806 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 262 transitions, 546 flow [2022-11-21 13:59:03,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:03,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:59:03,809 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] [2022-11-21 13:59:03,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:04,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:04,017 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 13:59:04,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:04,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1341200904, now seen corresponding path program 1 times [2022-11-21 13:59:04,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:04,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255688671] [2022-11-21 13:59:04,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:04,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:04,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:59:04,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:04,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255688671] [2022-11-21 13:59:04,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255688671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:59:04,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:59:04,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:59:04,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401805019] [2022-11-21 13:59:04,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:59:04,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:59:04,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:04,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:59:04,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:59:04,356 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 287 [2022-11-21 13:59:04,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 262 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:04,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:59:04,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 287 [2022-11-21 13:59:04,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:59:04,475 INFO L130 PetriNetUnfolder]: 7/420 cut-off events. [2022-11-21 13:59:04,476 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-21 13:59:04,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 420 events. 7/420 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 947 event pairs, 0 based on Foata normal form. 2/389 useless extension candidates. Maximal degree in co-relation 341. Up to 22 conditions per place. [2022-11-21 13:59:04,479 INFO L137 encePairwiseOnDemand]: 282/287 looper letters, 17 selfloop transitions, 2 changer transitions 0/268 dead transitions. [2022-11-21 13:59:04,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 268 transitions, 596 flow [2022-11-21 13:59:04,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:59:04,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 13:59:04,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 781 transitions. [2022-11-21 13:59:04,482 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9070847851335656 [2022-11-21 13:59:04,482 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 781 transitions. [2022-11-21 13:59:04,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 781 transitions. [2022-11-21 13:59:04,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:59:04,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 781 transitions. [2022-11-21 13:59:04,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:04,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:04,489 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:04,489 INFO L175 Difference]: Start difference. First operand has 263 places, 262 transitions, 546 flow. Second operand 3 states and 781 transitions. [2022-11-21 13:59:04,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 268 transitions, 596 flow [2022-11-21 13:59:04,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 268 transitions, 594 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 13:59:04,496 INFO L231 Difference]: Finished difference. Result has 263 places, 263 transitions, 560 flow [2022-11-21 13:59:04,497 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=560, PETRI_PLACES=263, PETRI_TRANSITIONS=263} [2022-11-21 13:59:04,498 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 2 predicate places. [2022-11-21 13:59:04,498 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 263 transitions, 560 flow [2022-11-21 13:59:04,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:04,499 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:59:04,500 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] [2022-11-21 13:59:04,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:59:04,500 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 13:59:04,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:04,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1176941335, now seen corresponding path program 1 times [2022-11-21 13:59:04,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:04,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753743907] [2022-11-21 13:59:04,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:04,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:04,564 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:04,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [384552213] [2022-11-21 13:59:04,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:04,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:04,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:04,579 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:04,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 13:59:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:04,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:59:04,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:04,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:59:04,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:59:04,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:04,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753743907] [2022-11-21 13:59:04,970 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:04,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384552213] [2022-11-21 13:59:04,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384552213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:59:04,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:59:04,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:59:04,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034596935] [2022-11-21 13:59:04,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:59:04,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:59:04,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:04,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:59:04,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:59:04,979 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 287 [2022-11-21 13:59:04,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 263 transitions, 560 flow. Second operand has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:04,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:59:04,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 287 [2022-11-21 13:59:04,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:59:05,207 INFO L130 PetriNetUnfolder]: 7/420 cut-off events. [2022-11-21 13:59:05,207 INFO L131 PetriNetUnfolder]: For 13/14 co-relation queries the response was YES. [2022-11-21 13:59:05,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 420 events. 7/420 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 954 event pairs, 0 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 370. Up to 30 conditions per place. [2022-11-21 13:59:05,210 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 23 selfloop transitions, 5 changer transitions 0/272 dead transitions. [2022-11-21 13:59:05,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 272 transitions, 634 flow [2022-11-21 13:59:05,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:59:05,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 13:59:05,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1269 transitions. [2022-11-21 13:59:05,216 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8843205574912892 [2022-11-21 13:59:05,216 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1269 transitions. [2022-11-21 13:59:05,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1269 transitions. [2022-11-21 13:59:05,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:59:05,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1269 transitions. [2022-11-21 13:59:05,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 253.8) internal successors, (1269), 5 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:05,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:05,229 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:05,229 INFO L175 Difference]: Start difference. First operand has 263 places, 263 transitions, 560 flow. Second operand 5 states and 1269 transitions. [2022-11-21 13:59:05,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 272 transitions, 634 flow [2022-11-21 13:59:05,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 272 transitions, 632 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 13:59:05,239 INFO L231 Difference]: Finished difference. Result has 270 places, 266 transitions, 592 flow [2022-11-21 13:59:05,240 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=592, PETRI_PLACES=270, PETRI_TRANSITIONS=266} [2022-11-21 13:59:05,242 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 9 predicate places. [2022-11-21 13:59:05,242 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 266 transitions, 592 flow [2022-11-21 13:59:05,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:05,244 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:59:05,244 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] [2022-11-21 13:59:05,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:05,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-21 13:59:05,451 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 13:59:05,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:05,452 INFO L85 PathProgramCache]: Analyzing trace with hash 2125443665, now seen corresponding path program 1 times [2022-11-21 13:59:05,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:05,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826505338] [2022-11-21 13:59:05,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:05,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:05,505 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:05,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945936764] [2022-11-21 13:59:05,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:05,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:05,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:05,513 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:05,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 13:59:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:05,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:59:05,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:05,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:59:05,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:59:05,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:05,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826505338] [2022-11-21 13:59:05,820 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:05,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945936764] [2022-11-21 13:59:05,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945936764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:59:05,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:59:05,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:59:05,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137830353] [2022-11-21 13:59:05,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:59:05,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:59:05,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:05,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:59:05,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:59:05,827 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 287 [2022-11-21 13:59:05,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 266 transitions, 592 flow. Second operand has 4 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:05,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:59:05,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 287 [2022-11-21 13:59:05,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:59:05,939 INFO L130 PetriNetUnfolder]: 7/416 cut-off events. [2022-11-21 13:59:05,940 INFO L131 PetriNetUnfolder]: For 35/36 co-relation queries the response was YES. [2022-11-21 13:59:05,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 416 events. 7/416 cut-off events. For 35/36 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 936 event pairs, 0 based on Foata normal form. 4/397 useless extension candidates. Maximal degree in co-relation 382. Up to 28 conditions per place. [2022-11-21 13:59:05,945 INFO L137 encePairwiseOnDemand]: 283/287 looper letters, 16 selfloop transitions, 5 changer transitions 0/265 dead transitions. [2022-11-21 13:59:05,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 265 transitions, 632 flow [2022-11-21 13:59:05,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:59:05,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 13:59:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1011 transitions. [2022-11-21 13:59:05,949 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8806620209059234 [2022-11-21 13:59:05,949 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1011 transitions. [2022-11-21 13:59:05,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1011 transitions. [2022-11-21 13:59:05,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:59:05,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1011 transitions. [2022-11-21 13:59:05,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 252.75) internal successors, (1011), 4 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:05,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:05,957 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:05,957 INFO L175 Difference]: Start difference. First operand has 270 places, 266 transitions, 592 flow. Second operand 4 states and 1011 transitions. [2022-11-21 13:59:05,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 265 transitions, 632 flow [2022-11-21 13:59:05,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 265 transitions, 623 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 13:59:05,966 INFO L231 Difference]: Finished difference. Result has 270 places, 265 transitions, 594 flow [2022-11-21 13:59:05,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=594, PETRI_PLACES=270, PETRI_TRANSITIONS=265} [2022-11-21 13:59:05,968 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 9 predicate places. [2022-11-21 13:59:05,969 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 265 transitions, 594 flow [2022-11-21 13:59:05,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:05,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:59:05,970 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] [2022-11-21 13:59:05,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:06,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:06,177 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 13:59:06,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:06,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1069835178, now seen corresponding path program 1 times [2022-11-21 13:59:06,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:06,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26924514] [2022-11-21 13:59:06,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:06,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:06,225 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:06,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994602938] [2022-11-21 13:59:06,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:06,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:06,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:06,228 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:06,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 13:59:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:06,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 13:59:06,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:06,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:59:06,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:06,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:59:06,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:06,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26924514] [2022-11-21 13:59:06,636 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:06,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994602938] [2022-11-21 13:59:06,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994602938] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:59:06,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:59:06,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-21 13:59:06,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538416144] [2022-11-21 13:59:06,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:06,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:59:06,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:06,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:59:06,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:59:06,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 287 [2022-11-21 13:59:06,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 265 transitions, 594 flow. Second operand has 8 states, 8 states have (on average 250.875) internal successors, (2007), 8 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:06,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:59:06,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 287 [2022-11-21 13:59:06,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:59:06,879 INFO L130 PetriNetUnfolder]: 7/502 cut-off events. [2022-11-21 13:59:06,879 INFO L131 PetriNetUnfolder]: For 51/52 co-relation queries the response was YES. [2022-11-21 13:59:06,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 502 events. 7/502 cut-off events. For 51/52 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 695 event pairs, 0 based on Foata normal form. 6/485 useless extension candidates. Maximal degree in co-relation 509. Up to 22 conditions per place. [2022-11-21 13:59:06,882 INFO L137 encePairwiseOnDemand]: 280/287 looper letters, 29 selfloop transitions, 10 changer transitions 0/283 dead transitions. [2022-11-21 13:59:06,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 283 transitions, 726 flow [2022-11-21 13:59:06,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:59:06,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 13:59:06,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2273 transitions. [2022-11-21 13:59:06,889 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8799845141308555 [2022-11-21 13:59:06,889 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2273 transitions. [2022-11-21 13:59:06,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2273 transitions. [2022-11-21 13:59:06,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:59:06,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2273 transitions. [2022-11-21 13:59:06,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 252.55555555555554) internal successors, (2273), 9 states have internal predecessors, (2273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:06,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 287.0) internal successors, (2870), 10 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:06,905 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 287.0) internal successors, (2870), 10 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:06,906 INFO L175 Difference]: Start difference. First operand has 270 places, 265 transitions, 594 flow. Second operand 9 states and 2273 transitions. [2022-11-21 13:59:06,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 283 transitions, 726 flow [2022-11-21 13:59:06,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 283 transitions, 713 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 13:59:06,915 INFO L231 Difference]: Finished difference. Result has 281 places, 269 transitions, 644 flow [2022-11-21 13:59:06,916 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=644, PETRI_PLACES=281, PETRI_TRANSITIONS=269} [2022-11-21 13:59:06,917 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 20 predicate places. [2022-11-21 13:59:06,918 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 269 transitions, 644 flow [2022-11-21 13:59:06,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 250.875) internal successors, (2007), 8 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:06,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:59:06,920 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:06,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:07,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:07,127 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 13:59:07,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:07,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1874008407, now seen corresponding path program 1 times [2022-11-21 13:59:07,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:07,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562837079] [2022-11-21 13:59:07,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:07,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:07,173 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:07,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313410423] [2022-11-21 13:59:07,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:07,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:07,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:07,175 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:07,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 13:59:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:07,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 13:59:07,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:07,703 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:59:07,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:07,968 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:59:07,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:07,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562837079] [2022-11-21 13:59:07,969 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:07,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313410423] [2022-11-21 13:59:07,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313410423] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:59:07,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:59:07,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-21 13:59:07,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735177409] [2022-11-21 13:59:07,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:07,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 13:59:07,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:07,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 13:59:07,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:59:07,976 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 287 [2022-11-21 13:59:07,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 269 transitions, 644 flow. Second operand has 14 states, 14 states have (on average 251.64285714285714) internal successors, (3523), 14 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:07,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:59:07,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 287 [2022-11-21 13:59:07,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:59:08,382 INFO L130 PetriNetUnfolder]: 13/792 cut-off events. [2022-11-21 13:59:08,382 INFO L131 PetriNetUnfolder]: For 132/134 co-relation queries the response was YES. [2022-11-21 13:59:08,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 792 events. 13/792 cut-off events. For 132/134 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1969 event pairs, 0 based on Foata normal form. 4/750 useless extension candidates. Maximal degree in co-relation 767. Up to 19 conditions per place. [2022-11-21 13:59:08,387 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 37 selfloop transitions, 16 changer transitions 0/297 dead transitions. [2022-11-21 13:59:08,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 297 transitions, 860 flow [2022-11-21 13:59:08,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 13:59:08,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 13:59:08,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3775 transitions. [2022-11-21 13:59:08,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8768873403019745 [2022-11-21 13:59:08,397 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3775 transitions. [2022-11-21 13:59:08,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3775 transitions. [2022-11-21 13:59:08,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:59:08,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3775 transitions. [2022-11-21 13:59:08,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 251.66666666666666) internal successors, (3775), 15 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:08,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:08,421 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:08,421 INFO L175 Difference]: Start difference. First operand has 281 places, 269 transitions, 644 flow. Second operand 15 states and 3775 transitions. [2022-11-21 13:59:08,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 297 transitions, 860 flow [2022-11-21 13:59:08,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 297 transitions, 842 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-21 13:59:08,431 INFO L231 Difference]: Finished difference. Result has 290 places, 273 transitions, 693 flow [2022-11-21 13:59:08,431 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=693, PETRI_PLACES=290, PETRI_TRANSITIONS=273} [2022-11-21 13:59:08,432 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 29 predicate places. [2022-11-21 13:59:08,432 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 273 transitions, 693 flow [2022-11-21 13:59:08,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 251.64285714285714) internal successors, (3523), 14 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:08,435 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:59:08,435 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:08,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-21 13:59:08,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-21 13:59:08,644 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 13:59:08,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:08,644 INFO L85 PathProgramCache]: Analyzing trace with hash -2047716714, now seen corresponding path program 2 times [2022-11-21 13:59:08,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:08,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740131639] [2022-11-21 13:59:08,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:08,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:08,702 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:08,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946012839] [2022-11-21 13:59:08,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:59:08,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:08,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:08,704 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:08,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 13:59:08,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 13:59:08,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:59:08,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:59:08,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:09,264 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-21 13:59:09,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:59:09,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:09,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740131639] [2022-11-21 13:59:09,265 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:09,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946012839] [2022-11-21 13:59:09,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946012839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:59:09,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:59:09,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:59:09,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111369192] [2022-11-21 13:59:09,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:59:09,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:59:09,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:09,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:59:09,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:59:09,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 287 [2022-11-21 13:59:09,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 273 transitions, 693 flow. Second operand has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:09,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:59:09,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 287 [2022-11-21 13:59:09,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:59:09,534 INFO L130 PetriNetUnfolder]: 13/792 cut-off events. [2022-11-21 13:59:09,534 INFO L131 PetriNetUnfolder]: For 133/135 co-relation queries the response was YES. [2022-11-21 13:59:09,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 792 events. 13/792 cut-off events. For 133/135 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1964 event pairs, 0 based on Foata normal form. 0/748 useless extension candidates. Maximal degree in co-relation 773. Up to 50 conditions per place. [2022-11-21 13:59:09,538 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 29 selfloop transitions, 5 changer transitions 0/285 dead transitions. [2022-11-21 13:59:09,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 285 transitions, 785 flow [2022-11-21 13:59:09,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:59:09,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 13:59:09,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1260 transitions. [2022-11-21 13:59:09,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8780487804878049 [2022-11-21 13:59:09,544 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1260 transitions. [2022-11-21 13:59:09,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1260 transitions. [2022-11-21 13:59:09,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:59:09,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1260 transitions. [2022-11-21 13:59:09,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:09,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:09,553 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:09,553 INFO L175 Difference]: Start difference. First operand has 290 places, 273 transitions, 693 flow. Second operand 5 states and 1260 transitions. [2022-11-21 13:59:09,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 285 transitions, 785 flow [2022-11-21 13:59:09,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 285 transitions, 726 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-21 13:59:09,564 INFO L231 Difference]: Finished difference. Result has 285 places, 276 transitions, 668 flow [2022-11-21 13:59:09,564 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=668, PETRI_PLACES=285, PETRI_TRANSITIONS=276} [2022-11-21 13:59:09,565 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 24 predicate places. [2022-11-21 13:59:09,565 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 276 transitions, 668 flow [2022-11-21 13:59:09,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:09,566 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:59:09,567 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:09,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:09,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:09,775 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 13:59:09,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:09,775 INFO L85 PathProgramCache]: Analyzing trace with hash 945291793, now seen corresponding path program 1 times [2022-11-21 13:59:09,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:09,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089256359] [2022-11-21 13:59:09,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:09,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:09,828 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:09,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546546587] [2022-11-21 13:59:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:09,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:09,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:09,830 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:09,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 13:59:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:10,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 13:59:10,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:10,493 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:59:10,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:10,864 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:59:10,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:10,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089256359] [2022-11-21 13:59:10,865 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:10,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546546587] [2022-11-21 13:59:10,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546546587] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:59:10,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:59:10,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-21 13:59:10,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619669636] [2022-11-21 13:59:10,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:10,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 13:59:10,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:10,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 13:59:10,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:59:10,875 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 287 [2022-11-21 13:59:10,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 276 transitions, 668 flow. Second operand has 16 states, 16 states have (on average 251.6875) internal successors, (4027), 16 states have internal predecessors, (4027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:10,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:59:10,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 287 [2022-11-21 13:59:10,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:59:11,414 INFO L130 PetriNetUnfolder]: 7/836 cut-off events. [2022-11-21 13:59:11,414 INFO L131 PetriNetUnfolder]: For 121/122 co-relation queries the response was YES. [2022-11-21 13:59:11,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 836 events. 7/836 cut-off events. For 121/122 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 709 event pairs, 0 based on Foata normal form. 8/825 useless extension candidates. Maximal degree in co-relation 1011. Up to 20 conditions per place. [2022-11-21 13:59:11,418 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 60 selfloop transitions, 22 changer transitions 0/329 dead transitions. [2022-11-21 13:59:11,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 329 transitions, 1025 flow [2022-11-21 13:59:11,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 13:59:11,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-21 13:59:11,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5293 transitions. [2022-11-21 13:59:11,431 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8782147005143521 [2022-11-21 13:59:11,431 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5293 transitions. [2022-11-21 13:59:11,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5293 transitions. [2022-11-21 13:59:11,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:59:11,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5293 transitions. [2022-11-21 13:59:11,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 252.04761904761904) internal successors, (5293), 21 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:11,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 287.0) internal successors, (6314), 22 states have internal predecessors, (6314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:11,491 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 287.0) internal successors, (6314), 22 states have internal predecessors, (6314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:11,491 INFO L175 Difference]: Start difference. First operand has 285 places, 276 transitions, 668 flow. Second operand 21 states and 5293 transitions. [2022-11-21 13:59:11,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 329 transitions, 1025 flow [2022-11-21 13:59:11,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 329 transitions, 1015 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-21 13:59:11,500 INFO L231 Difference]: Finished difference. Result has 309 places, 285 transitions, 778 flow [2022-11-21 13:59:11,500 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=778, PETRI_PLACES=309, PETRI_TRANSITIONS=285} [2022-11-21 13:59:11,501 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 48 predicate places. [2022-11-21 13:59:11,501 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 285 transitions, 778 flow [2022-11-21 13:59:11,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 251.6875) internal successors, (4027), 16 states have internal predecessors, (4027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:11,503 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:59:11,503 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:11,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-21 13:59:11,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:11,712 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 13:59:11,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:11,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1996445073, now seen corresponding path program 2 times [2022-11-21 13:59:11,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:11,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2872448] [2022-11-21 13:59:11,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:11,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:11,784 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:11,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125018924] [2022-11-21 13:59:11,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:59:11,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:11,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:11,786 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:11,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 13:59:12,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 13:59:12,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:59:12,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:59:12,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:12,628 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-21 13:59:12,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:59:12,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:12,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2872448] [2022-11-21 13:59:12,629 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:12,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125018924] [2022-11-21 13:59:12,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125018924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:59:12,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:59:12,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:59:12,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56901337] [2022-11-21 13:59:12,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:59:12,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:59:12,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:12,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:59:12,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:59:12,636 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 287 [2022-11-21 13:59:12,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 285 transitions, 778 flow. Second operand has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:12,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:59:12,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 287 [2022-11-21 13:59:12,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:59:12,947 INFO L130 PetriNetUnfolder]: 7/834 cut-off events. [2022-11-21 13:59:12,947 INFO L131 PetriNetUnfolder]: For 185/186 co-relation queries the response was YES. [2022-11-21 13:59:12,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1154 conditions, 834 events. 7/834 cut-off events. For 185/186 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 704 event pairs, 0 based on Foata normal form. 2/817 useless extension candidates. Maximal degree in co-relation 1012. Up to 80 conditions per place. [2022-11-21 13:59:12,951 INFO L137 encePairwiseOnDemand]: 283/287 looper letters, 18 selfloop transitions, 5 changer transitions 0/283 dead transitions. [2022-11-21 13:59:12,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 283 transitions, 814 flow [2022-11-21 13:59:12,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:59:12,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 13:59:12,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1001 transitions. [2022-11-21 13:59:12,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8719512195121951 [2022-11-21 13:59:12,955 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1001 transitions. [2022-11-21 13:59:12,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1001 transitions. [2022-11-21 13:59:12,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:59:12,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1001 transitions. [2022-11-21 13:59:12,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:12,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:12,962 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:12,962 INFO L175 Difference]: Start difference. First operand has 309 places, 285 transitions, 778 flow. Second operand 4 states and 1001 transitions. [2022-11-21 13:59:12,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 283 transitions, 814 flow [2022-11-21 13:59:12,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 283 transitions, 791 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-21 13:59:12,970 INFO L231 Difference]: Finished difference. Result has 300 places, 283 transitions, 755 flow [2022-11-21 13:59:12,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=755, PETRI_PLACES=300, PETRI_TRANSITIONS=283} [2022-11-21 13:59:12,972 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 39 predicate places. [2022-11-21 13:59:12,972 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 283 transitions, 755 flow [2022-11-21 13:59:12,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:12,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:59:12,973 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:12,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:13,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:13,180 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 13:59:13,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:13,181 INFO L85 PathProgramCache]: Analyzing trace with hash 2035585227, now seen corresponding path program 1 times [2022-11-21 13:59:13,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:13,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335471395] [2022-11-21 13:59:13,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:13,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:13,275 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:13,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [231900394] [2022-11-21 13:59:13,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:13,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:13,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:13,277 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:13,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 13:59:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:13,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 1375 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 13:59:13,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:14,471 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:59:14,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:15,323 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:59:15,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:15,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335471395] [2022-11-21 13:59:15,324 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:15,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231900394] [2022-11-21 13:59:15,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231900394] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:59:15,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:59:15,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-21 13:59:15,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339062146] [2022-11-21 13:59:15,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:15,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-21 13:59:15,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:15,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-21 13:59:15,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-21 13:59:15,335 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 287 [2022-11-21 13:59:15,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 283 transitions, 755 flow. Second operand has 32 states, 32 states have (on average 252.125) internal successors, (8068), 32 states have internal predecessors, (8068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:15,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:59:15,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 287 [2022-11-21 13:59:15,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:59:16,776 INFO L130 PetriNetUnfolder]: 7/1506 cut-off events. [2022-11-21 13:59:16,777 INFO L131 PetriNetUnfolder]: For 730/731 co-relation queries the response was YES. [2022-11-21 13:59:16,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2268 conditions, 1506 events. 7/1506 cut-off events. For 730/731 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 743 event pairs, 0 based on Foata normal form. 16/1503 useless extension candidates. Maximal degree in co-relation 2126. Up to 38 conditions per place. [2022-11-21 13:59:16,782 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 124 selfloop transitions, 46 changer transitions 0/415 dead transitions. [2022-11-21 13:59:16,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 415 transitions, 1691 flow [2022-11-21 13:59:16,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-21 13:59:16,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-21 13:59:16,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 11337 transitions. [2022-11-21 13:59:16,806 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8778164924506388 [2022-11-21 13:59:16,806 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 11337 transitions. [2022-11-21 13:59:16,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 11337 transitions. [2022-11-21 13:59:16,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:59:16,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 11337 transitions. [2022-11-21 13:59:16,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 251.93333333333334) internal successors, (11337), 45 states have internal predecessors, (11337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:16,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 287.0) internal successors, (13202), 46 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:16,871 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 287.0) internal successors, (13202), 46 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:16,871 INFO L175 Difference]: Start difference. First operand has 300 places, 283 transitions, 755 flow. Second operand 45 states and 11337 transitions. [2022-11-21 13:59:16,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 415 transitions, 1691 flow [2022-11-21 13:59:16,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 415 transitions, 1681 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 13:59:16,886 INFO L231 Difference]: Finished difference. Result has 350 places, 308 transitions, 1068 flow [2022-11-21 13:59:16,887 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1068, PETRI_PLACES=350, PETRI_TRANSITIONS=308} [2022-11-21 13:59:16,889 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 89 predicate places. [2022-11-21 13:59:16,889 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 308 transitions, 1068 flow [2022-11-21 13:59:16,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 252.125) internal successors, (8068), 32 states have internal predecessors, (8068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:16,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:59:16,893 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:16,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:17,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 13:59:17,103 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 13:59:17,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:17,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1082832843, now seen corresponding path program 2 times [2022-11-21 13:59:17,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:17,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515350171] [2022-11-21 13:59:17,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:17,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:17,263 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:17,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862451404] [2022-11-21 13:59:17,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:59:17,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:17,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:17,266 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:17,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 13:59:17,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 13:59:17,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:59:17,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:59:17,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:17,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4321 trivial. 0 not checked. [2022-11-21 13:59:17,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:59:17,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:17,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515350171] [2022-11-21 13:59:17,823 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:17,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862451404] [2022-11-21 13:59:17,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862451404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:59:17,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:59:17,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:59:17,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33471478] [2022-11-21 13:59:17,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:59:17,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:59:17,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:17,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:59:17,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:59:17,827 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 287 [2022-11-21 13:59:17,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 308 transitions, 1068 flow. Second operand has 4 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:17,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:59:17,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 287 [2022-11-21 13:59:17,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:59:18,556 INFO L130 PetriNetUnfolder]: 7/1494 cut-off events. [2022-11-21 13:59:18,557 INFO L131 PetriNetUnfolder]: For 732/742 co-relation queries the response was YES. [2022-11-21 13:59:18,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2113 conditions, 1494 events. 7/1494 cut-off events. For 732/742 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 682 event pairs, 0 based on Foata normal form. 3/1481 useless extension candidates. Maximal degree in co-relation 1955. Up to 38 conditions per place. [2022-11-21 13:59:18,561 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 11 selfloop transitions, 4 changer transitions 0/309 dead transitions. [2022-11-21 13:59:18,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 309 transitions, 1100 flow [2022-11-21 13:59:18,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:59:18,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 13:59:18,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1277 transitions. [2022-11-21 13:59:18,566 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8898954703832752 [2022-11-21 13:59:18,566 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1277 transitions. [2022-11-21 13:59:18,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1277 transitions. [2022-11-21 13:59:18,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:59:18,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1277 transitions. [2022-11-21 13:59:18,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 255.4) internal successors, (1277), 5 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:18,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:18,572 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:18,572 INFO L175 Difference]: Start difference. First operand has 350 places, 308 transitions, 1068 flow. Second operand 5 states and 1277 transitions. [2022-11-21 13:59:18,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 309 transitions, 1100 flow [2022-11-21 13:59:18,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 309 transitions, 1043 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-21 13:59:18,583 INFO L231 Difference]: Finished difference. Result has 336 places, 307 transitions, 1021 flow [2022-11-21 13:59:18,584 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1021, PETRI_PLACES=336, PETRI_TRANSITIONS=307} [2022-11-21 13:59:18,584 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 75 predicate places. [2022-11-21 13:59:18,585 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 307 transitions, 1021 flow [2022-11-21 13:59:18,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:18,585 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:59:18,586 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:18,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:18,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:18,792 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 13:59:18,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:18,792 INFO L85 PathProgramCache]: Analyzing trace with hash -791919649, now seen corresponding path program 1 times [2022-11-21 13:59:18,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:18,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930990083] [2022-11-21 13:59:18,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:18,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:18,912 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:18,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793631240] [2022-11-21 13:59:18,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:18,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:18,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:18,914 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:18,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 13:59:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:19,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-21 13:59:19,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:21,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:59:21,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:23,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:59:23,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:23,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930990083] [2022-11-21 13:59:23,554 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:23,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793631240] [2022-11-21 13:59:23,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793631240] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:59:23,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:59:23,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-21 13:59:23,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868765819] [2022-11-21 13:59:23,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:23,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-21 13:59:23,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:23,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-21 13:59:23,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-21 13:59:23,568 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 287 [2022-11-21 13:59:23,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 307 transitions, 1021 flow. Second operand has 61 states, 61 states have (on average 252.37704918032787) internal successors, (15395), 61 states have internal predecessors, (15395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:23,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:59:23,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 287 [2022-11-21 13:59:23,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:59:27,877 INFO L130 PetriNetUnfolder]: 7/2754 cut-off events. [2022-11-21 13:59:27,877 INFO L131 PetriNetUnfolder]: For 4949/4950 co-relation queries the response was YES. [2022-11-21 13:59:27,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4517 conditions, 2754 events. 7/2754 cut-off events. For 4949/4950 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 757 event pairs, 0 based on Foata normal form. 30/2769 useless extension candidates. Maximal degree in co-relation 4361. Up to 96 conditions per place. [2022-11-21 13:59:27,887 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 244 selfloop transitions, 91 changer transitions 0/579 dead transitions. [2022-11-21 13:59:27,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 579 transitions, 3103 flow [2022-11-21 13:59:27,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-21 13:59:27,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-21 13:59:27,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 22669 transitions. [2022-11-21 13:59:27,919 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8776229190863337 [2022-11-21 13:59:27,919 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 22669 transitions. [2022-11-21 13:59:27,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 22669 transitions. [2022-11-21 13:59:27,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:59:27,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 22669 transitions. [2022-11-21 13:59:28,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 251.87777777777777) internal successors, (22669), 90 states have internal predecessors, (22669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:28,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 287.0) internal successors, (26117), 91 states have internal predecessors, (26117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:28,097 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 287.0) internal successors, (26117), 91 states have internal predecessors, (26117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:28,098 INFO L175 Difference]: Start difference. First operand has 336 places, 307 transitions, 1021 flow. Second operand 90 states and 22669 transitions. [2022-11-21 13:59:28,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 579 transitions, 3103 flow [2022-11-21 13:59:28,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 579 transitions, 3095 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 13:59:28,121 INFO L231 Difference]: Finished difference. Result has 437 places, 353 transitions, 1702 flow [2022-11-21 13:59:28,122 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1702, PETRI_PLACES=437, PETRI_TRANSITIONS=353} [2022-11-21 13:59:28,123 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 176 predicate places. [2022-11-21 13:59:28,123 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 353 transitions, 1702 flow [2022-11-21 13:59:28,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 252.37704918032787) internal successors, (15395), 61 states have internal predecessors, (15395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:28,128 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:59:28,129 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:28,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:28,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-21 13:59:28,341 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 13:59:28,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:28,342 INFO L85 PathProgramCache]: Analyzing trace with hash -2086665727, now seen corresponding path program 2 times [2022-11-21 13:59:28,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:28,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391955788] [2022-11-21 13:59:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:28,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:28,551 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:28,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125859326] [2022-11-21 13:59:28,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:59:28,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:28,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:28,553 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:28,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 13:59:29,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 13:59:29,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:59:29,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:59:29,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:29,593 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-21 13:59:29,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:59:29,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:29,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391955788] [2022-11-21 13:59:29,594 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:29,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125859326] [2022-11-21 13:59:29,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125859326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:59:29,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:59:29,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:59:29,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586278086] [2022-11-21 13:59:29,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:59:29,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:59:29,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:29,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:59:29,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:59:29,598 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 287 [2022-11-21 13:59:29,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 353 transitions, 1702 flow. Second operand has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:29,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:59:29,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 287 [2022-11-21 13:59:29,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:59:31,148 INFO L130 PetriNetUnfolder]: 7/2753 cut-off events. [2022-11-21 13:59:31,148 INFO L131 PetriNetUnfolder]: For 2959/2968 co-relation queries the response was YES. [2022-11-21 13:59:31,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4212 conditions, 2753 events. 7/2753 cut-off events. For 2959/2968 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 754 event pairs, 0 based on Foata normal form. 1/2740 useless extension candidates. Maximal degree in co-relation 4037. Up to 96 conditions per place. [2022-11-21 13:59:31,158 INFO L137 encePairwiseOnDemand]: 283/287 looper letters, 9 selfloop transitions, 3 changer transitions 0/352 dead transitions. [2022-11-21 13:59:31,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 352 transitions, 1724 flow [2022-11-21 13:59:31,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:59:31,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 13:59:31,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1021 transitions. [2022-11-21 13:59:31,161 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8893728222996515 [2022-11-21 13:59:31,161 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1021 transitions. [2022-11-21 13:59:31,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1021 transitions. [2022-11-21 13:59:31,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:59:31,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1021 transitions. [2022-11-21 13:59:31,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 255.25) internal successors, (1021), 4 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:31,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:31,166 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:31,166 INFO L175 Difference]: Start difference. First operand has 437 places, 353 transitions, 1702 flow. Second operand 4 states and 1021 transitions. [2022-11-21 13:59:31,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 352 transitions, 1724 flow [2022-11-21 13:59:31,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 352 transitions, 1605 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-21 13:59:31,196 INFO L231 Difference]: Finished difference. Result has 397 places, 352 transitions, 1587 flow [2022-11-21 13:59:31,197 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1587, PETRI_PLACES=397, PETRI_TRANSITIONS=352} [2022-11-21 13:59:31,198 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 136 predicate places. [2022-11-21 13:59:31,198 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 352 transitions, 1587 flow [2022-11-21 13:59:31,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:31,199 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:59:31,199 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:31,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:31,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-21 13:59:31,411 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 13:59:31,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:31,412 INFO L85 PathProgramCache]: Analyzing trace with hash -657749680, now seen corresponding path program 1 times [2022-11-21 13:59:31,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:31,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502472284] [2022-11-21 13:59:31,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:31,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:31,606 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:31,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012834845] [2022-11-21 13:59:31,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:31,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:31,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:31,608 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:31,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-21 13:59:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:33,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 5238 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 13:59:33,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:35,721 INFO L134 CoverageAnalysis]: Checked inductivity of 17871 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17870 trivial. 0 not checked. [2022-11-21 13:59:35,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:37,875 INFO L134 CoverageAnalysis]: Checked inductivity of 17871 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17870 trivial. 0 not checked. [2022-11-21 13:59:37,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:37,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502472284] [2022-11-21 13:59:37,876 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:37,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012834845] [2022-11-21 13:59:37,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012834845] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:59:37,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:59:37,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-21 13:59:37,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011730248] [2022-11-21 13:59:37,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:37,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:59:37,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:37,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:59:37,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:59:37,881 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 287 [2022-11-21 13:59:37,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 352 transitions, 1587 flow. Second operand has 8 states, 8 states have (on average 248.75) internal successors, (1990), 8 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:37,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:59:37,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 287 [2022-11-21 13:59:37,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:59:40,886 INFO L130 PetriNetUnfolder]: 8/4059 cut-off events. [2022-11-21 13:59:40,886 INFO L131 PetriNetUnfolder]: For 4612/4613 co-relation queries the response was YES. [2022-11-21 13:59:40,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6591 conditions, 4059 events. 8/4059 cut-off events. For 4612/4613 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 564 event pairs, 0 based on Foata normal form. 3/4048 useless extension candidates. Maximal degree in co-relation 6421. Up to 187 conditions per place. [2022-11-21 13:59:40,896 INFO L137 encePairwiseOnDemand]: 280/287 looper letters, 38 selfloop transitions, 9 changer transitions 0/376 dead transitions. [2022-11-21 13:59:40,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 376 transitions, 1743 flow [2022-11-21 13:59:40,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:59:40,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 13:59:40,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2255 transitions. [2022-11-21 13:59:40,901 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.873015873015873 [2022-11-21 13:59:40,901 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2255 transitions. [2022-11-21 13:59:40,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2255 transitions. [2022-11-21 13:59:40,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:59:40,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2255 transitions. [2022-11-21 13:59:40,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 250.55555555555554) internal successors, (2255), 9 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:40,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 287.0) internal successors, (2870), 10 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:40,909 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 287.0) internal successors, (2870), 10 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:40,909 INFO L175 Difference]: Start difference. First operand has 397 places, 352 transitions, 1587 flow. Second operand 9 states and 2255 transitions. [2022-11-21 13:59:40,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 376 transitions, 1743 flow [2022-11-21 13:59:40,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 376 transitions, 1737 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 13:59:40,954 INFO L231 Difference]: Finished difference. Result has 407 places, 356 transitions, 1637 flow [2022-11-21 13:59:40,955 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1637, PETRI_PLACES=407, PETRI_TRANSITIONS=356} [2022-11-21 13:59:40,956 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 146 predicate places. [2022-11-21 13:59:40,956 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 356 transitions, 1637 flow [2022-11-21 13:59:40,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 248.75) internal successors, (1990), 8 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:40,957 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:59:40,958 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:40,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:41,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:41,180 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 13:59:41,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:41,180 INFO L85 PathProgramCache]: Analyzing trace with hash 761693965, now seen corresponding path program 1 times [2022-11-21 13:59:41,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:41,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886806631] [2022-11-21 13:59:41,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:41,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:41,495 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:41,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547106447] [2022-11-21 13:59:41,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:41,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:41,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:41,499 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:41,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-21 13:59:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:45,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 5339 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 13:59:45,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:48,443 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-21 13:59:48,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:50,726 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-21 13:59:50,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:50,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886806631] [2022-11-21 13:59:50,726 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:50,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547106447] [2022-11-21 13:59:50,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547106447] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:59:50,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:59:50,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-21 13:59:50,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701266333] [2022-11-21 13:59:50,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:50,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 13:59:50,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:50,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 13:59:50,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:59:50,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 287 [2022-11-21 13:59:50,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 356 transitions, 1637 flow. Second operand has 14 states, 14 states have (on average 240.35714285714286) internal successors, (3365), 14 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:50,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:59:50,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 287 [2022-11-21 13:59:50,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:59:55,274 INFO L130 PetriNetUnfolder]: 8/4027 cut-off events. [2022-11-21 13:59:55,275 INFO L131 PetriNetUnfolder]: For 4800/4801 co-relation queries the response was YES. [2022-11-21 13:59:55,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7036 conditions, 4027 events. 8/4027 cut-off events. For 4800/4801 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 415 event pairs, 0 based on Foata normal form. 32/4045 useless extension candidates. Maximal degree in co-relation 6864. Up to 307 conditions per place. [2022-11-21 13:59:55,297 INFO L137 encePairwiseOnDemand]: 273/287 looper letters, 224 selfloop transitions, 144 changer transitions 0/596 dead transitions. [2022-11-21 13:59:55,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 596 transitions, 4497 flow [2022-11-21 13:59:55,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 13:59:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-21 13:59:55,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5743 transitions. [2022-11-21 13:59:55,310 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8337688734030198 [2022-11-21 13:59:55,310 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5743 transitions. [2022-11-21 13:59:55,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5743 transitions. [2022-11-21 13:59:55,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:59:55,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5743 transitions. [2022-11-21 13:59:55,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 239.29166666666666) internal successors, (5743), 24 states have internal predecessors, (5743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:55,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 287.0) internal successors, (7175), 25 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:55,345 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 287.0) internal successors, (7175), 25 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:55,345 INFO L175 Difference]: Start difference. First operand has 407 places, 356 transitions, 1637 flow. Second operand 24 states and 5743 transitions. [2022-11-21 13:59:55,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 596 transitions, 4497 flow [2022-11-21 13:59:55,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 596 transitions, 4481 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-21 13:59:55,392 INFO L231 Difference]: Finished difference. Result has 431 places, 487 transitions, 3676 flow [2022-11-21 13:59:55,394 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3676, PETRI_PLACES=431, PETRI_TRANSITIONS=487} [2022-11-21 13:59:55,395 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 170 predicate places. [2022-11-21 13:59:55,396 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 487 transitions, 3676 flow [2022-11-21 13:59:55,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 240.35714285714286) internal successors, (3365), 14 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:55,396 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:59:55,397 INFO L209 CegarLoopForPetriNet]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:55,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:55,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 13:59:55,623 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 13:59:55,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:55,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1677598391, now seen corresponding path program 1 times [2022-11-21 13:59:55,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:55,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703815022] [2022-11-21 13:59:55,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:55,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:55,835 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:55,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349041031] [2022-11-21 13:59:55,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:55,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:55,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:55,837 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:55,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-21 14:00:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:04,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 5507 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 14:00:04,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:00:06,804 INFO L134 CoverageAnalysis]: Checked inductivity of 20475 backedges. 2610 proven. 0 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-21 14:00:06,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:00:06,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:06,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703815022] [2022-11-21 14:00:06,805 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 14:00:06,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349041031] [2022-11-21 14:00:06,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349041031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:06,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:00:06,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 14:00:06,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051079569] [2022-11-21 14:00:06,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:06,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 14:00:06,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:06,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 14:00:06,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:00:06,810 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 287 [2022-11-21 14:00:06,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 487 transitions, 3676 flow. Second operand has 11 states, 11 states have (on average 239.45454545454547) internal successors, (2634), 11 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:06,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:00:06,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 287 [2022-11-21 14:00:06,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:00:10,595 INFO L130 PetriNetUnfolder]: 8/3970 cut-off events. [2022-11-21 14:00:10,595 INFO L131 PetriNetUnfolder]: For 7139/7140 co-relation queries the response was YES. [2022-11-21 14:00:10,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7508 conditions, 3970 events. 8/3970 cut-off events. For 7139/7140 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 331 event pairs, 0 based on Foata normal form. 57/4013 useless extension candidates. Maximal degree in co-relation 7330. Up to 370 conditions per place. [2022-11-21 14:00:10,609 INFO L137 encePairwiseOnDemand]: 277/287 looper letters, 208 selfloop transitions, 139 changer transitions 0/575 dead transitions. [2022-11-21 14:00:10,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 575 transitions, 5152 flow [2022-11-21 14:00:10,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 14:00:10,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 14:00:10,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3591 transitions. [2022-11-21 14:00:10,621 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8341463414634146 [2022-11-21 14:00:10,622 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3591 transitions. [2022-11-21 14:00:10,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3591 transitions. [2022-11-21 14:00:10,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:00:10,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3591 transitions. [2022-11-21 14:00:10,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 239.4) internal successors, (3591), 15 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:10,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:10,637 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:10,637 INFO L175 Difference]: Start difference. First operand has 431 places, 487 transitions, 3676 flow. Second operand 15 states and 3591 transitions. [2022-11-21 14:00:10,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 575 transitions, 5152 flow [2022-11-21 14:00:10,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 575 transitions, 5120 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-11-21 14:00:10,687 INFO L231 Difference]: Finished difference. Result has 438 places, 544 transitions, 4855 flow [2022-11-21 14:00:10,687 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=3625, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4855, PETRI_PLACES=438, PETRI_TRANSITIONS=544} [2022-11-21 14:00:10,688 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 177 predicate places. [2022-11-21 14:00:10,688 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 544 transitions, 4855 flow [2022-11-21 14:00:10,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 239.45454545454547) internal successors, (2634), 11 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:10,689 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:00:10,690 INFO L209 CegarLoopForPetriNet]: trace histogram [63, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:00:10,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-21 14:00:10,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 14:00:10,903 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 14:00:10,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:10,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1019422050, now seen corresponding path program 2 times [2022-11-21 14:00:10,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:10,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143018249] [2022-11-21 14:00:10,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:10,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:11,253 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 14:00:11,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768508029] [2022-11-21 14:00:11,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 14:00:11,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:00:11,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:00:11,260 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:00:11,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-21 14:02:18,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 14:02:18,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:02:18,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 10566 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 14:02:18,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:02:22,214 INFO L134 CoverageAnalysis]: Checked inductivity of 77817 backedges. 2 proven. 42042 refuted. 0 times theorem prover too weak. 35773 trivial. 0 not checked. [2022-11-21 14:02:22,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:07:53,796 INFO L134 CoverageAnalysis]: Checked inductivity of 77817 backedges. 0 proven. 42044 refuted. 0 times theorem prover too weak. 35773 trivial. 0 not checked. [2022-11-21 14:07:53,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:07:53,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143018249] [2022-11-21 14:07:53,797 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 14:07:53,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768508029] [2022-11-21 14:07:53,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768508029] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:07:53,798 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:07:53,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-21 14:07:53,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239633276] [2022-11-21 14:07:53,799 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:07:53,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 14:07:53,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:07:53,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 14:07:53,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=137, Unknown=1, NotChecked=0, Total=182 [2022-11-21 14:07:53,806 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 287 [2022-11-21 14:07:53,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 544 transitions, 4855 flow. Second operand has 14 states, 14 states have (on average 246.92857142857142) internal successors, (3457), 14 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:07:53,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:07:53,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 287 [2022-11-21 14:07:53,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:08:16,569 WARN L233 SmtUtils]: Spent 6.61s on a formula simplification. DAG size of input: 31 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 14:08:16,579 INFO L130 PetriNetUnfolder]: 9/5187 cut-off events. [2022-11-21 14:08:16,580 INFO L131 PetriNetUnfolder]: For 13160/13161 co-relation queries the response was YES. [2022-11-21 14:08:16,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9724 conditions, 5187 events. 9/5187 cut-off events. For 13160/13161 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 607 event pairs, 0 based on Foata normal form. 56/5229 useless extension candidates. Maximal degree in co-relation 9544. Up to 217 conditions per place. [2022-11-21 14:08:16,594 INFO L137 encePairwiseOnDemand]: 278/287 looper letters, 205 selfloop transitions, 125 changer transitions 0/650 dead transitions. [2022-11-21 14:08:16,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 650 transitions, 6944 flow [2022-11-21 14:08:16,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 14:08:16,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 14:08:16,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4157 transitions. [2022-11-21 14:08:16,600 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.852018856323017 [2022-11-21 14:08:16,600 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4157 transitions. [2022-11-21 14:08:16,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4157 transitions. [2022-11-21 14:08:16,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:08:16,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4157 transitions. [2022-11-21 14:08:16,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 244.52941176470588) internal successors, (4157), 17 states have internal predecessors, (4157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:08:16,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 287.0) internal successors, (5166), 18 states have internal predecessors, (5166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:08:16,613 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 287.0) internal successors, (5166), 18 states have internal predecessors, (5166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:08:16,613 INFO L175 Difference]: Start difference. First operand has 438 places, 544 transitions, 4855 flow. Second operand 17 states and 4157 transitions. [2022-11-21 14:08:16,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 650 transitions, 6944 flow [2022-11-21 14:08:16,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 650 transitions, 6730 flow, removed 59 selfloop flow, removed 9 redundant places. [2022-11-21 14:08:16,675 INFO L231 Difference]: Finished difference. Result has 447 places, 589 transitions, 5741 flow [2022-11-21 14:08:16,676 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=4667, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5741, PETRI_PLACES=447, PETRI_TRANSITIONS=589} [2022-11-21 14:08:16,677 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 186 predicate places. [2022-11-21 14:08:16,677 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 589 transitions, 5741 flow [2022-11-21 14:08:16,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 246.92857142857142) internal successors, (3457), 14 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:08:16,678 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:08:16,679 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:08:16,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-21 14:08:16,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 14:08:16,903 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 14:08:16,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:08:16,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1141553302, now seen corresponding path program 1 times [2022-11-21 14:08:16,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:08:16,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335001224] [2022-11-21 14:08:16,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:08:16,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:08:17,682 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 14:08:17,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1659646377] [2022-11-21 14:08:17,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:08:17,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:08:17,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:08:17,686 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:08:17,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-21 14:08:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:22,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 15359 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 14:08:22,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:08:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 164531 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53600 trivial. 0 not checked. [2022-11-21 14:08:29,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:08:37,199 INFO L134 CoverageAnalysis]: Checked inductivity of 164531 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53600 trivial. 0 not checked. [2022-11-21 14:08:37,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:08:37,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335001224] [2022-11-21 14:08:37,199 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 14:08:37,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659646377] [2022-11-21 14:08:37,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659646377] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:08:37,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:08:37,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-21 14:08:37,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832753771] [2022-11-21 14:08:37,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:08:37,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 14:08:37,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:08:37,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 14:08:37,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:08:37,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 287 [2022-11-21 14:08:37,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 589 transitions, 5741 flow. Second operand has 16 states, 16 states have (on average 249.875) internal successors, (3998), 16 states have internal predecessors, (3998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:08:37,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:08:37,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 287 [2022-11-21 14:08:37,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:08:53,818 INFO L130 PetriNetUnfolder]: 12/8930 cut-off events. [2022-11-21 14:08:53,819 INFO L131 PetriNetUnfolder]: For 22359/22360 co-relation queries the response was YES. [2022-11-21 14:08:53,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16657 conditions, 8930 events. 12/8930 cut-off events. For 22359/22360 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 277 event pairs, 0 based on Foata normal form. 4/8920 useless extension candidates. Maximal degree in co-relation 16475. Up to 336 conditions per place. [2022-11-21 14:08:53,850 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 74 selfloop transitions, 21 changer transitions 0/655 dead transitions. [2022-11-21 14:08:53,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 655 transitions, 6213 flow [2022-11-21 14:08:53,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 14:08:53,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-21 14:08:53,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5239 transitions. [2022-11-21 14:08:53,859 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.869255019080803 [2022-11-21 14:08:53,859 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5239 transitions. [2022-11-21 14:08:53,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5239 transitions. [2022-11-21 14:08:53,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:08:53,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5239 transitions. [2022-11-21 14:08:53,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 249.47619047619048) internal successors, (5239), 21 states have internal predecessors, (5239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:08:53,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 287.0) internal successors, (6314), 22 states have internal predecessors, (6314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:08:53,881 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 287.0) internal successors, (6314), 22 states have internal predecessors, (6314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:08:53,881 INFO L175 Difference]: Start difference. First operand has 447 places, 589 transitions, 5741 flow. Second operand 21 states and 5239 transitions. [2022-11-21 14:08:53,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 655 transitions, 6213 flow [2022-11-21 14:08:53,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 655 transitions, 6097 flow, removed 17 selfloop flow, removed 10 redundant places. [2022-11-21 14:08:53,988 INFO L231 Difference]: Finished difference. Result has 462 places, 600 transitions, 5805 flow [2022-11-21 14:08:53,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=5653, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=576, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5805, PETRI_PLACES=462, PETRI_TRANSITIONS=600} [2022-11-21 14:08:53,989 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 201 predicate places. [2022-11-21 14:08:53,990 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 600 transitions, 5805 flow [2022-11-21 14:08:53,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 249.875) internal successors, (3998), 16 states have internal predecessors, (3998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:08:53,991 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:08:53,994 INFO L209 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:08:54,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-21 14:08:54,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 14:08:54,207 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 14:08:54,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:08:54,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1765454374, now seen corresponding path program 2 times [2022-11-21 14:08:54,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:08:54,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981345875] [2022-11-21 14:08:54,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:08:54,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:08:55,803 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 14:08:55,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099966693] [2022-11-21 14:08:55,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 14:08:55,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:08:55,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:08:55,807 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:08:55,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-21 14:09:09,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 14:09:09,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:09:09,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 35599 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 14:09:09,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:09:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 901563 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125060 trivial. 0 not checked. [2022-11-21 14:09:28,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:09:50,060 INFO L134 CoverageAnalysis]: Checked inductivity of 901563 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125060 trivial. 0 not checked. [2022-11-21 14:09:50,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:09:50,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981345875] [2022-11-21 14:09:50,060 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 14:09:50,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099966693] [2022-11-21 14:09:50,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099966693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:09:50,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:09:50,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2022-11-21 14:09:50,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384144850] [2022-11-21 14:09:50,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:09:50,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 14:09:50,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:09:50,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 14:09:50,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-21 14:09:50,078 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 287 [2022-11-21 14:09:50,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 600 transitions, 5805 flow. Second operand has 21 states, 21 states have (on average 250.42857142857142) internal successors, (5259), 21 states have internal predecessors, (5259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:09:50,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:09:50,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 287 [2022-11-21 14:09:50,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:10:26,854 INFO L130 PetriNetUnfolder]: 15/12671 cut-off events. [2022-11-21 14:10:26,854 INFO L131 PetriNetUnfolder]: For 30712/30713 co-relation queries the response was YES. [2022-11-21 14:10:26,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23491 conditions, 12671 events. 15/12671 cut-off events. For 30712/30713 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 282 event pairs, 0 based on Foata normal form. 3/12660 useless extension candidates. Maximal degree in co-relation 23307. Up to 480 conditions per place. [2022-11-21 14:10:26,908 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 104 selfloop transitions, 30 changer transitions 0/694 dead transitions. [2022-11-21 14:10:26,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 694 transitions, 6459 flow [2022-11-21 14:10:26,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 14:10:26,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-21 14:10:26,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7479 transitions. [2022-11-21 14:10:26,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8686411149825783 [2022-11-21 14:10:26,927 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7479 transitions. [2022-11-21 14:10:26,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7479 transitions. [2022-11-21 14:10:26,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:10:26,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7479 transitions. [2022-11-21 14:10:26,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 249.3) internal successors, (7479), 30 states have internal predecessors, (7479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:10:26,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 287.0) internal successors, (8897), 31 states have internal predecessors, (8897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:10:26,966 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 287.0) internal successors, (8897), 31 states have internal predecessors, (8897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:10:26,967 INFO L175 Difference]: Start difference. First operand has 462 places, 600 transitions, 5805 flow. Second operand 30 states and 7479 transitions. [2022-11-21 14:10:26,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 694 transitions, 6459 flow [2022-11-21 14:10:27,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 694 transitions, 6443 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-21 14:10:27,123 INFO L231 Difference]: Finished difference. Result has 487 places, 610 transitions, 5976 flow [2022-11-21 14:10:27,124 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=5789, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5976, PETRI_PLACES=487, PETRI_TRANSITIONS=610} [2022-11-21 14:10:27,125 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 226 predicate places. [2022-11-21 14:10:27,125 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 610 transitions, 5976 flow [2022-11-21 14:10:27,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 250.42857142857142) internal successors, (5259), 21 states have internal predecessors, (5259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:10:27,126 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:10:27,131 INFO L209 CegarLoopForPetriNet]: trace histogram [300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:10:27,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-21 14:10:27,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:10:27,359 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 14:10:27,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:10:27,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1073835629, now seen corresponding path program 3 times [2022-11-21 14:10:27,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:10:27,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630615482] [2022-11-21 14:10:27,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:10:27,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:10:29,677 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 14:10:29,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1227511014] [2022-11-21 14:10:29,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 14:10:29,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:10:29,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:10:29,683 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:10:29,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce08ad8-8db9-40a8-be9a-0592c0a824d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process