./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:27:21,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:27:21,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:27:21,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:27:21,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:27:21,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:27:21,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:27:21,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:27:21,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:27:21,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:27:21,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:27:21,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:27:21,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:27:21,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:27:21,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:27:21,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:27:21,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:27:21,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:27:21,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:27:21,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:27:21,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:27:21,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:27:21,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:27:21,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:27:21,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:27:21,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:27:21,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:27:21,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:27:21,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:27:21,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:27:21,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:27:21,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:27:21,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:27:21,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:27:21,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:27:21,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:27:21,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:27:21,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:27:21,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:27:21,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:27:21,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:27:21,748 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:27:21,797 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:27:21,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:27:21,798 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:27:21,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:27:21,799 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:27:21,799 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:27:21,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:27:21,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:27:21,801 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:27:21,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:27:21,802 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:27:21,803 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:27:21,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:27:21,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:27:21,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:27:21,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:27:21,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:27:21,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:27:21,804 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:27:21,805 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:27:21,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:27:21,805 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:27:21,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:27:21,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:27:21,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:27:21,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:27:21,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:27:21,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:27:21,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:27:21,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:27:21,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:27:21,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:27:21,808 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:27:21,808 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:27:21,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:27:21,810 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_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2022-11-16 11:27:22,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:27:22,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:27:22,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:27:22,216 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:27:22,217 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:27:22,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2022-11-16 11:27:22,319 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/data/87f8a6600/d30563ee0eb24091b5cbac0950240230/FLAG249d79303 [2022-11-16 11:27:23,105 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:27:23,106 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2022-11-16 11:27:23,134 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/data/87f8a6600/d30563ee0eb24091b5cbac0950240230/FLAG249d79303 [2022-11-16 11:27:23,292 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/data/87f8a6600/d30563ee0eb24091b5cbac0950240230 [2022-11-16 11:27:23,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:27:23,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:27:23,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:27:23,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:27:23,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:27:23,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:27:23" (1/1) ... [2022-11-16 11:27:23,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cfd7c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:23, skipping insertion in model container [2022-11-16 11:27:23,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:27:23" (1/1) ... [2022-11-16 11:27:23,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:27:23,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:27:23,873 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2022-11-16 11:27:23,884 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:27:23,885 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:27:23,885 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:27:23,886 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:27:23,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:27:23,946 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:27:24,004 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2022-11-16 11:27:24,008 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:27:24,009 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:27:24,009 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:27:24,010 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:27:24,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:27:24,096 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:27:24,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:24 WrapperNode [2022-11-16 11:27:24,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:27:24,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:27:24,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:27:24,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:27:24,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:24" (1/1) ... [2022-11-16 11:27:24,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:24" (1/1) ... [2022-11-16 11:27:24,172 INFO L138 Inliner]: procedures = 277, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 198 [2022-11-16 11:27:24,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:27:24,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:27:24,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:27:24,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:27:24,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:24" (1/1) ... [2022-11-16 11:27:24,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:24" (1/1) ... [2022-11-16 11:27:24,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:24" (1/1) ... [2022-11-16 11:27:24,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:24" (1/1) ... [2022-11-16 11:27:24,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:24" (1/1) ... [2022-11-16 11:27:24,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:24" (1/1) ... [2022-11-16 11:27:24,249 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:24" (1/1) ... [2022-11-16 11:27:24,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:24" (1/1) ... [2022-11-16 11:27:24,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:27:24,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:27:24,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:27:24,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:27:24,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:24" (1/1) ... [2022-11-16 11:27:24,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:27:24,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:24,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:27:24,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:27:24,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:27:24,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 11:27:24,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:27:24,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:27:24,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:27:24,370 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:27:24,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:27:24,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:27:24,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 11:27:24,371 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 11:27:24,371 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 11:27:24,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:27:24,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:27:24,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:27:24,374 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:27:24,625 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:27:24,627 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:27:25,105 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:27:25,113 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:27:25,113 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-16 11:27:25,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:27:25 BoogieIcfgContainer [2022-11-16 11:27:25,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:27:25,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:27:25,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:27:25,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:27:25,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:27:23" (1/3) ... [2022-11-16 11:27:25,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278533b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:27:25, skipping insertion in model container [2022-11-16 11:27:25,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:24" (2/3) ... [2022-11-16 11:27:25,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278533b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:27:25, skipping insertion in model container [2022-11-16 11:27:25,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:27:25" (3/3) ... [2022-11-16 11:27:25,127 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2022-11-16 11:27:25,136 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:27:25,151 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:27:25,152 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-16 11:27:25,152 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:27:25,333 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 11:27:25,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 229 transitions, 466 flow [2022-11-16 11:27:25,586 INFO L130 PetriNetUnfolder]: 26/246 cut-off events. [2022-11-16 11:27:25,587 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-16 11:27:25,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 246 events. 26/246 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 699 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 126. Up to 4 conditions per place. [2022-11-16 11:27:25,597 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 229 transitions, 466 flow [2022-11-16 11:27:25,614 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 226 transitions, 460 flow [2022-11-16 11:27:25,638 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:27:25,647 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;@5b3c41f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:27:25,649 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-16 11:27:25,687 INFO L130 PetriNetUnfolder]: 4/65 cut-off events. [2022-11-16 11:27:25,688 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:27:25,688 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:25,689 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] [2022-11-16 11:27:25,690 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:27:25,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:25,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1492248910, now seen corresponding path program 1 times [2022-11-16 11:27:25,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:25,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022358840] [2022-11-16 11:27:25,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:25,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:25,912 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:27:25,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30193173] [2022-11-16 11:27:25,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:25,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:25,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:25,919 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:27:25,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:27:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:26,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:27:26,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:26,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:26,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:27:26,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:26,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022358840] [2022-11-16 11:27:26,132 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:27:26,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30193173] [2022-11-16 11:27:26,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30193173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:26,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:26,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:27:26,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492903373] [2022-11-16 11:27:26,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:26,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:27:26,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:26,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:27:26,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:27:26,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 229 [2022-11-16 11:27:26,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 226 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:26,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:26,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 229 [2022-11-16 11:27:26,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:26,352 INFO L130 PetriNetUnfolder]: 6/282 cut-off events. [2022-11-16 11:27:26,353 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-16 11:27:26,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 282 events. 6/282 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 818 event pairs, 0 based on Foata normal form. 20/271 useless extension candidates. Maximal degree in co-relation 188. Up to 17 conditions per place. [2022-11-16 11:27:26,357 INFO L137 encePairwiseOnDemand]: 206/229 looper letters, 23 selfloop transitions, 2 changer transitions 0/216 dead transitions. [2022-11-16 11:27:26,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 216 transitions, 490 flow [2022-11-16 11:27:26,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:27:26,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:27:26,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 630 transitions. [2022-11-16 11:27:26,390 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9170305676855895 [2022-11-16 11:27:26,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 630 transitions. [2022-11-16 11:27:26,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 630 transitions. [2022-11-16 11:27:26,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:26,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 630 transitions. [2022-11-16 11:27:26,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:26,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:26,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:26,427 INFO L175 Difference]: Start difference. First operand has 206 places, 226 transitions, 460 flow. Second operand 3 states and 630 transitions. [2022-11-16 11:27:26,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 216 transitions, 490 flow [2022-11-16 11:27:26,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 216 transitions, 490 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:27:26,445 INFO L231 Difference]: Finished difference. Result has 208 places, 208 transitions, 438 flow [2022-11-16 11:27:26,451 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=438, PETRI_PLACES=208, PETRI_TRANSITIONS=208} [2022-11-16 11:27:26,458 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 2 predicate places. [2022-11-16 11:27:26,458 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 208 transitions, 438 flow [2022-11-16 11:27:26,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:26,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:26,461 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] [2022-11-16 11:27:26,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:27:26,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 11:27:26,670 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:27:26,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:26,671 INFO L85 PathProgramCache]: Analyzing trace with hash 984923365, now seen corresponding path program 1 times [2022-11-16 11:27:26,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:26,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890457474] [2022-11-16 11:27:26,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:26,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:26,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:26,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890457474] [2022-11-16 11:27:26,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890457474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:26,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:26,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:27:26,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788013154] [2022-11-16 11:27:26,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:26,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:27:26,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:26,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:27:26,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:27:26,947 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 229 [2022-11-16 11:27:26,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 208 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:26,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:26,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 229 [2022-11-16 11:27:26,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:27,094 INFO L130 PetriNetUnfolder]: 6/366 cut-off events. [2022-11-16 11:27:27,094 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-16 11:27:27,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 366 events. 6/366 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 806 event pairs, 0 based on Foata normal form. 2/336 useless extension candidates. Maximal degree in co-relation 287. Up to 22 conditions per place. [2022-11-16 11:27:27,097 INFO L137 encePairwiseOnDemand]: 224/229 looper letters, 17 selfloop transitions, 2 changer transitions 0/214 dead transitions. [2022-11-16 11:27:27,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 214 transitions, 488 flow [2022-11-16 11:27:27,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:27:27,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:27:27,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2022-11-16 11:27:27,101 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8922852983988355 [2022-11-16 11:27:27,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2022-11-16 11:27:27,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2022-11-16 11:27:27,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:27,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2022-11-16 11:27:27,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:27,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:27,108 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:27,108 INFO L175 Difference]: Start difference. First operand has 208 places, 208 transitions, 438 flow. Second operand 3 states and 613 transitions. [2022-11-16 11:27:27,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 214 transitions, 488 flow [2022-11-16 11:27:27,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 214 transitions, 486 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:27:27,137 INFO L231 Difference]: Finished difference. Result has 210 places, 209 transitions, 452 flow [2022-11-16 11:27:27,139 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=452, PETRI_PLACES=210, PETRI_TRANSITIONS=209} [2022-11-16 11:27:27,140 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 4 predicate places. [2022-11-16 11:27:27,140 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 209 transitions, 452 flow [2022-11-16 11:27:27,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:27,141 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:27,141 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:27,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:27:27,142 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:27:27,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:27,142 INFO L85 PathProgramCache]: Analyzing trace with hash -710055353, now seen corresponding path program 1 times [2022-11-16 11:27:27,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:27,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833683010] [2022-11-16 11:27:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:27,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:27,222 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:27:27,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293066034] [2022-11-16 11:27:27,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:27,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:27,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:27,235 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:27:27,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:27:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:27,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:27:27,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:27,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:27,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:27:27,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:27,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833683010] [2022-11-16 11:27:27,632 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:27:27,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293066034] [2022-11-16 11:27:27,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293066034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:27,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:27,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:27:27,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190389969] [2022-11-16 11:27:27,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:27,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:27:27,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:27,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:27:27,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:27:27,639 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 229 [2022-11-16 11:27:27,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 209 transitions, 452 flow. Second operand has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:27,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:27,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 229 [2022-11-16 11:27:27,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:27,802 INFO L130 PetriNetUnfolder]: 6/366 cut-off events. [2022-11-16 11:27:27,802 INFO L131 PetriNetUnfolder]: For 13/14 co-relation queries the response was YES. [2022-11-16 11:27:27,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 366 events. 6/366 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 807 event pairs, 0 based on Foata normal form. 0/338 useless extension candidates. Maximal degree in co-relation 316. Up to 30 conditions per place. [2022-11-16 11:27:27,805 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 23 selfloop transitions, 5 changer transitions 0/218 dead transitions. [2022-11-16 11:27:27,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 218 transitions, 526 flow [2022-11-16 11:27:27,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:27:27,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:27:27,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 989 transitions. [2022-11-16 11:27:27,811 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8637554585152838 [2022-11-16 11:27:27,811 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 989 transitions. [2022-11-16 11:27:27,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 989 transitions. [2022-11-16 11:27:27,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:27,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 989 transitions. [2022-11-16 11:27:27,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 197.8) internal successors, (989), 5 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:27,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:27,820 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:27,821 INFO L175 Difference]: Start difference. First operand has 210 places, 209 transitions, 452 flow. Second operand 5 states and 989 transitions. [2022-11-16 11:27:27,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 218 transitions, 526 flow [2022-11-16 11:27:27,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 218 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:27:27,827 INFO L231 Difference]: Finished difference. Result has 217 places, 212 transitions, 484 flow [2022-11-16 11:27:27,828 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=484, PETRI_PLACES=217, PETRI_TRANSITIONS=212} [2022-11-16 11:27:27,831 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 11 predicate places. [2022-11-16 11:27:27,831 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 212 transitions, 484 flow [2022-11-16 11:27:27,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:27,832 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:27,832 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] [2022-11-16 11:27:27,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:27:28,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:28,042 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:27:28,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:28,043 INFO L85 PathProgramCache]: Analyzing trace with hash -536879049, now seen corresponding path program 1 times [2022-11-16 11:27:28,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:28,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594952318] [2022-11-16 11:27:28,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:28,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:28,097 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:27:28,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1061433984] [2022-11-16 11:27:28,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:28,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:28,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:28,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:27:28,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:27:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:28,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:27:28,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:28,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:27:28,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:28,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594952318] [2022-11-16 11:27:28,404 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:27:28,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061433984] [2022-11-16 11:27:28,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061433984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:28,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:28,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:27:28,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977742525] [2022-11-16 11:27:28,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:28,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:27:28,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:28,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:27:28,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:27:28,409 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 229 [2022-11-16 11:27:28,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 212 transitions, 484 flow. Second operand has 4 states, 4 states have (on average 194.25) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:28,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:28,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 229 [2022-11-16 11:27:28,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:28,538 INFO L130 PetriNetUnfolder]: 6/362 cut-off events. [2022-11-16 11:27:28,539 INFO L131 PetriNetUnfolder]: For 35/36 co-relation queries the response was YES. [2022-11-16 11:27:28,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 362 events. 6/362 cut-off events. For 35/36 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 792 event pairs, 0 based on Foata normal form. 4/344 useless extension candidates. Maximal degree in co-relation 328. Up to 28 conditions per place. [2022-11-16 11:27:28,544 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 16 selfloop transitions, 5 changer transitions 0/211 dead transitions. [2022-11-16 11:27:28,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 211 transitions, 524 flow [2022-11-16 11:27:28,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:27:28,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:27:28,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 787 transitions. [2022-11-16 11:27:28,547 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8591703056768559 [2022-11-16 11:27:28,547 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 787 transitions. [2022-11-16 11:27:28,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 787 transitions. [2022-11-16 11:27:28,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:28,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 787 transitions. [2022-11-16 11:27:28,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:28,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:28,554 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:28,555 INFO L175 Difference]: Start difference. First operand has 217 places, 212 transitions, 484 flow. Second operand 4 states and 787 transitions. [2022-11-16 11:27:28,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 211 transitions, 524 flow [2022-11-16 11:27:28,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 211 transitions, 515 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:27:28,562 INFO L231 Difference]: Finished difference. Result has 217 places, 211 transitions, 486 flow [2022-11-16 11:27:28,563 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=486, PETRI_PLACES=217, PETRI_TRANSITIONS=211} [2022-11-16 11:27:28,564 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 11 predicate places. [2022-11-16 11:27:28,565 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 211 transitions, 486 flow [2022-11-16 11:27:28,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.25) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:28,566 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:28,566 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] [2022-11-16 11:27:28,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:27:28,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:28,773 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:27:28,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:28,774 INFO L85 PathProgramCache]: Analyzing trace with hash -52392030, now seen corresponding path program 1 times [2022-11-16 11:27:28,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:28,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649504511] [2022-11-16 11:27:28,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:28,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:28,843 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:27:28,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032360764] [2022-11-16 11:27:28,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:28,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:28,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:28,845 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:27:28,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:27:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:29,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:27:29,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:29,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:29,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:27:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:29,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:29,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649504511] [2022-11-16 11:27:29,242 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:27:29,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032360764] [2022-11-16 11:27:29,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032360764] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:27:29,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:27:29,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 11:27:29,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287604563] [2022-11-16 11:27:29,243 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:27:29,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:27:29,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:29,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:27:29,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:27:29,248 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 229 [2022-11-16 11:27:29,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 211 transitions, 486 flow. Second operand has 8 states, 8 states have (on average 194.875) internal successors, (1559), 8 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:29,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:29,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 229 [2022-11-16 11:27:29,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:29,463 INFO L130 PetriNetUnfolder]: 6/448 cut-off events. [2022-11-16 11:27:29,464 INFO L131 PetriNetUnfolder]: For 51/52 co-relation queries the response was YES. [2022-11-16 11:27:29,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 587 conditions, 448 events. 6/448 cut-off events. For 51/52 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 541 event pairs, 0 based on Foata normal form. 6/432 useless extension candidates. Maximal degree in co-relation 455. Up to 22 conditions per place. [2022-11-16 11:27:29,466 INFO L137 encePairwiseOnDemand]: 222/229 looper letters, 29 selfloop transitions, 10 changer transitions 0/229 dead transitions. [2022-11-16 11:27:29,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 229 transitions, 618 flow [2022-11-16 11:27:29,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:27:29,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:27:29,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1769 transitions. [2022-11-16 11:27:29,471 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8583212032993692 [2022-11-16 11:27:29,471 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1769 transitions. [2022-11-16 11:27:29,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1769 transitions. [2022-11-16 11:27:29,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:29,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1769 transitions. [2022-11-16 11:27:29,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 196.55555555555554) internal successors, (1769), 9 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:29,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:29,485 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:29,485 INFO L175 Difference]: Start difference. First operand has 217 places, 211 transitions, 486 flow. Second operand 9 states and 1769 transitions. [2022-11-16 11:27:29,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 229 transitions, 618 flow [2022-11-16 11:27:29,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 229 transitions, 605 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:27:29,494 INFO L231 Difference]: Finished difference. Result has 228 places, 215 transitions, 536 flow [2022-11-16 11:27:29,495 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=536, PETRI_PLACES=228, PETRI_TRANSITIONS=215} [2022-11-16 11:27:29,497 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 22 predicate places. [2022-11-16 11:27:29,497 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 215 transitions, 536 flow [2022-11-16 11:27:29,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 194.875) internal successors, (1559), 8 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:29,498 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:29,499 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] [2022-11-16 11:27:29,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:27:29,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:29,705 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:27:29,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:29,705 INFO L85 PathProgramCache]: Analyzing trace with hash -126800473, now seen corresponding path program 1 times [2022-11-16 11:27:29,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:29,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193564295] [2022-11-16 11:27:29,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:29,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:29,761 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:27:29,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998667508] [2022-11-16 11:27:29,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:29,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:29,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:29,777 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:27:29,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:27:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:30,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:27:30,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:30,283 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:30,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:27:30,539 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:30,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:30,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193564295] [2022-11-16 11:27:30,540 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:27:30,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998667508] [2022-11-16 11:27:30,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998667508] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:27:30,541 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:27:30,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 11:27:30,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412107391] [2022-11-16 11:27:30,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:27:30,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:27:30,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:30,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:27:30,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:27:30,549 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 229 [2022-11-16 11:27:30,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 215 transitions, 536 flow. Second operand has 14 states, 14 states have (on average 195.64285714285714) internal successors, (2739), 14 states have internal predecessors, (2739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:30,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:30,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 229 [2022-11-16 11:27:30,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:30,860 INFO L130 PetriNetUnfolder]: 11/690 cut-off events. [2022-11-16 11:27:30,861 INFO L131 PetriNetUnfolder]: For 132/134 co-relation queries the response was YES. [2022-11-16 11:27:30,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 690 events. 11/690 cut-off events. For 132/134 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1513 event pairs, 0 based on Foata normal form. 4/650 useless extension candidates. Maximal degree in co-relation 665. Up to 19 conditions per place. [2022-11-16 11:27:30,865 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 37 selfloop transitions, 16 changer transitions 0/243 dead transitions. [2022-11-16 11:27:30,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 243 transitions, 752 flow [2022-11-16 11:27:30,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:27:30,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 11:27:30,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2935 transitions. [2022-11-16 11:27:30,872 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8544395924308588 [2022-11-16 11:27:30,873 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2935 transitions. [2022-11-16 11:27:30,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2935 transitions. [2022-11-16 11:27:30,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:30,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2935 transitions. [2022-11-16 11:27:30,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 195.66666666666666) internal successors, (2935), 15 states have internal predecessors, (2935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:30,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 229.0) internal successors, (3664), 16 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:30,891 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 229.0) internal successors, (3664), 16 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:30,892 INFO L175 Difference]: Start difference. First operand has 228 places, 215 transitions, 536 flow. Second operand 15 states and 2935 transitions. [2022-11-16 11:27:30,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 243 transitions, 752 flow [2022-11-16 11:27:30,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 243 transitions, 734 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-16 11:27:30,899 INFO L231 Difference]: Finished difference. Result has 237 places, 219 transitions, 585 flow [2022-11-16 11:27:30,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=585, PETRI_PLACES=237, PETRI_TRANSITIONS=219} [2022-11-16 11:27:30,900 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 31 predicate places. [2022-11-16 11:27:30,900 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 219 transitions, 585 flow [2022-11-16 11:27:30,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 195.64285714285714) internal successors, (2739), 14 states have internal predecessors, (2739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:30,902 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:30,902 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] [2022-11-16 11:27:30,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:27:31,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:31,109 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:27:31,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:31,109 INFO L85 PathProgramCache]: Analyzing trace with hash -153335038, now seen corresponding path program 2 times [2022-11-16 11:27:31,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:31,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299062845] [2022-11-16 11:27:31,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:31,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:31,153 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:27:31,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417902055] [2022-11-16 11:27:31,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:27:31,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:31,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:31,155 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:27:31,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:27:31,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:27:31,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:27:31,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:27:31,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:31,643 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-16 11:27:31,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:27:31,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:31,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299062845] [2022-11-16 11:27:31,644 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:27:31,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417902055] [2022-11-16 11:27:31,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417902055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:31,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:31,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:27:31,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866167675] [2022-11-16 11:27:31,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:31,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:27:31,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:31,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:27:31,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:27:31,654 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 229 [2022-11-16 11:27:31,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 219 transitions, 585 flow. Second operand has 4 states, 4 states have (on average 191.75) internal successors, (767), 4 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:31,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:31,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 229 [2022-11-16 11:27:31,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:31,872 INFO L130 PetriNetUnfolder]: 11/690 cut-off events. [2022-11-16 11:27:31,872 INFO L131 PetriNetUnfolder]: For 132/134 co-relation queries the response was YES. [2022-11-16 11:27:31,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 690 events. 11/690 cut-off events. For 132/134 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1507 event pairs, 0 based on Foata normal form. 0/648 useless extension candidates. Maximal degree in co-relation 671. Up to 50 conditions per place. [2022-11-16 11:27:31,877 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 29 selfloop transitions, 5 changer transitions 0/231 dead transitions. [2022-11-16 11:27:31,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 231 transitions, 677 flow [2022-11-16 11:27:31,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:27:31,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:27:31,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 980 transitions. [2022-11-16 11:27:31,881 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8558951965065502 [2022-11-16 11:27:31,881 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 980 transitions. [2022-11-16 11:27:31,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 980 transitions. [2022-11-16 11:27:31,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:31,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 980 transitions. [2022-11-16 11:27:31,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 196.0) internal successors, (980), 5 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:31,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:31,889 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:31,889 INFO L175 Difference]: Start difference. First operand has 237 places, 219 transitions, 585 flow. Second operand 5 states and 980 transitions. [2022-11-16 11:27:31,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 231 transitions, 677 flow [2022-11-16 11:27:31,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 231 transitions, 618 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-16 11:27:31,898 INFO L231 Difference]: Finished difference. Result has 232 places, 222 transitions, 560 flow [2022-11-16 11:27:31,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=560, PETRI_PLACES=232, PETRI_TRANSITIONS=222} [2022-11-16 11:27:31,900 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 26 predicate places. [2022-11-16 11:27:31,900 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 222 transitions, 560 flow [2022-11-16 11:27:31,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.75) internal successors, (767), 4 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:31,901 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:31,901 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] [2022-11-16 11:27:31,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:27:32,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:32,108 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:27:32,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:32,109 INFO L85 PathProgramCache]: Analyzing trace with hash -458418374, now seen corresponding path program 1 times [2022-11-16 11:27:32,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:32,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548389788] [2022-11-16 11:27:32,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:32,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:32,172 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:27:32,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501290109] [2022-11-16 11:27:32,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:32,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:32,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:32,174 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:27:32,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:27:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:32,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:27:32,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:32,780 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:32,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:27:33,054 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:33,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:33,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548389788] [2022-11-16 11:27:33,055 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:27:33,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501290109] [2022-11-16 11:27:33,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501290109] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:27:33,055 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:27:33,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 11:27:33,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948819145] [2022-11-16 11:27:33,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:27:33,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:27:33,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:33,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:27:33,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:27:33,063 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 229 [2022-11-16 11:27:33,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 222 transitions, 560 flow. Second operand has 16 states, 16 states have (on average 195.6875) internal successors, (3131), 16 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:33,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:33,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 229 [2022-11-16 11:27:33,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:33,555 INFO L130 PetriNetUnfolder]: 6/782 cut-off events. [2022-11-16 11:27:33,555 INFO L131 PetriNetUnfolder]: For 121/122 co-relation queries the response was YES. [2022-11-16 11:27:33,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 782 events. 6/782 cut-off events. For 121/122 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 562 event pairs, 0 based on Foata normal form. 8/772 useless extension candidates. Maximal degree in co-relation 957. Up to 20 conditions per place. [2022-11-16 11:27:33,559 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 60 selfloop transitions, 22 changer transitions 0/275 dead transitions. [2022-11-16 11:27:33,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 275 transitions, 917 flow [2022-11-16 11:27:33,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:27:33,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:27:33,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4117 transitions. [2022-11-16 11:27:33,568 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8561031399459347 [2022-11-16 11:27:33,568 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4117 transitions. [2022-11-16 11:27:33,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4117 transitions. [2022-11-16 11:27:33,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:33,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4117 transitions. [2022-11-16 11:27:33,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 196.04761904761904) internal successors, (4117), 21 states have internal predecessors, (4117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:33,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 229.0) internal successors, (5038), 22 states have internal predecessors, (5038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:33,591 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 229.0) internal successors, (5038), 22 states have internal predecessors, (5038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:33,591 INFO L175 Difference]: Start difference. First operand has 232 places, 222 transitions, 560 flow. Second operand 21 states and 4117 transitions. [2022-11-16 11:27:33,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 275 transitions, 917 flow [2022-11-16 11:27:33,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 275 transitions, 907 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-16 11:27:33,598 INFO L231 Difference]: Finished difference. Result has 256 places, 231 transitions, 670 flow [2022-11-16 11:27:33,599 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=670, PETRI_PLACES=256, PETRI_TRANSITIONS=231} [2022-11-16 11:27:33,599 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 50 predicate places. [2022-11-16 11:27:33,599 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 231 transitions, 670 flow [2022-11-16 11:27:33,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 195.6875) internal successors, (3131), 16 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:33,602 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:33,602 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] [2022-11-16 11:27:33,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 11:27:33,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:33,809 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:27:33,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:33,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1679999098, now seen corresponding path program 2 times [2022-11-16 11:27:33,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:33,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091010966] [2022-11-16 11:27:33,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:33,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:33,914 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:27:33,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987323345] [2022-11-16 11:27:33,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:27:33,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:33,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:33,916 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:27:33,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:27:34,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:27:34,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:27:34,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:27:34,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:34,937 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-16 11:27:34,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:27:34,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:34,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091010966] [2022-11-16 11:27:34,938 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:27:34,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987323345] [2022-11-16 11:27:34,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987323345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:34,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:34,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:27:34,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130217496] [2022-11-16 11:27:34,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:34,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:27:34,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:34,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:27:34,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:27:34,945 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 229 [2022-11-16 11:27:34,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 231 transitions, 670 flow. Second operand has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:34,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:34,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 229 [2022-11-16 11:27:34,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:35,208 INFO L130 PetriNetUnfolder]: 6/780 cut-off events. [2022-11-16 11:27:35,208 INFO L131 PetriNetUnfolder]: For 182/183 co-relation queries the response was YES. [2022-11-16 11:27:35,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 780 events. 6/780 cut-off events. For 182/183 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 555 event pairs, 0 based on Foata normal form. 2/764 useless extension candidates. Maximal degree in co-relation 958. Up to 80 conditions per place. [2022-11-16 11:27:35,211 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 18 selfloop transitions, 5 changer transitions 0/229 dead transitions. [2022-11-16 11:27:35,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 229 transitions, 706 flow [2022-11-16 11:27:35,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:27:35,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:27:35,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 777 transitions. [2022-11-16 11:27:35,214 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8482532751091703 [2022-11-16 11:27:35,215 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 777 transitions. [2022-11-16 11:27:35,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 777 transitions. [2022-11-16 11:27:35,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:35,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 777 transitions. [2022-11-16 11:27:35,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 194.25) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:35,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:35,221 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:35,221 INFO L175 Difference]: Start difference. First operand has 256 places, 231 transitions, 670 flow. Second operand 4 states and 777 transitions. [2022-11-16 11:27:35,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 229 transitions, 706 flow [2022-11-16 11:27:35,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 229 transitions, 683 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-16 11:27:35,231 INFO L231 Difference]: Finished difference. Result has 247 places, 229 transitions, 647 flow [2022-11-16 11:27:35,232 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=647, PETRI_PLACES=247, PETRI_TRANSITIONS=229} [2022-11-16 11:27:35,233 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 41 predicate places. [2022-11-16 11:27:35,233 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 229 transitions, 647 flow [2022-11-16 11:27:35,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:35,234 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:35,234 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] [2022-11-16 11:27:35,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:27:35,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 11:27:35,441 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:27:35,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:35,442 INFO L85 PathProgramCache]: Analyzing trace with hash 644885036, now seen corresponding path program 1 times [2022-11-16 11:27:35,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:35,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398949359] [2022-11-16 11:27:35,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:35,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:35,521 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:27:35,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1207602834] [2022-11-16 11:27:35,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:35,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:35,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:35,523 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:27:35,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:27:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:36,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:27:36,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:36,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:27:37,553 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:37,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:37,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398949359] [2022-11-16 11:27:37,554 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:27:37,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207602834] [2022-11-16 11:27:37,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207602834] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:27:37,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:27:37,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-16 11:27:37,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875806604] [2022-11-16 11:27:37,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:27:37,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 11:27:37,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:37,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 11:27:37,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:27:37,570 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 229 [2022-11-16 11:27:37,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 229 transitions, 647 flow. Second operand has 32 states, 32 states have (on average 196.125) internal successors, (6276), 32 states have internal predecessors, (6276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:37,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:37,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 229 [2022-11-16 11:27:37,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:39,208 INFO L130 PetriNetUnfolder]: 6/1452 cut-off events. [2022-11-16 11:27:39,209 INFO L131 PetriNetUnfolder]: For 730/731 co-relation queries the response was YES. [2022-11-16 11:27:39,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2214 conditions, 1452 events. 6/1452 cut-off events. For 730/731 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 593 event pairs, 0 based on Foata normal form. 16/1450 useless extension candidates. Maximal degree in co-relation 2072. Up to 38 conditions per place. [2022-11-16 11:27:39,215 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 124 selfloop transitions, 46 changer transitions 0/361 dead transitions. [2022-11-16 11:27:39,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 361 transitions, 1583 flow [2022-11-16 11:27:39,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-16 11:27:39,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-16 11:27:39,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 8817 transitions. [2022-11-16 11:27:39,237 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.855604075691412 [2022-11-16 11:27:39,238 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 8817 transitions. [2022-11-16 11:27:39,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 8817 transitions. [2022-11-16 11:27:39,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:39,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 8817 transitions. [2022-11-16 11:27:39,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 195.93333333333334) internal successors, (8817), 45 states have internal predecessors, (8817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:39,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 229.0) internal successors, (10534), 46 states have internal predecessors, (10534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:39,289 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 229.0) internal successors, (10534), 46 states have internal predecessors, (10534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:39,289 INFO L175 Difference]: Start difference. First operand has 247 places, 229 transitions, 647 flow. Second operand 45 states and 8817 transitions. [2022-11-16 11:27:39,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 361 transitions, 1583 flow [2022-11-16 11:27:39,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 361 transitions, 1573 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:27:39,301 INFO L231 Difference]: Finished difference. Result has 297 places, 254 transitions, 960 flow [2022-11-16 11:27:39,302 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=960, PETRI_PLACES=297, PETRI_TRANSITIONS=254} [2022-11-16 11:27:39,303 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 91 predicate places. [2022-11-16 11:27:39,303 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 254 transitions, 960 flow [2022-11-16 11:27:39,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 196.125) internal successors, (6276), 32 states have internal predecessors, (6276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:39,306 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:39,307 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] [2022-11-16 11:27:39,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-16 11:27:39,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:27:39,516 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:27:39,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:39,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1970420908, now seen corresponding path program 2 times [2022-11-16 11:27:39,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:39,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544228023] [2022-11-16 11:27:39,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:39,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:39,661 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:27:39,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600516003] [2022-11-16 11:27:39,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:27:39,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:39,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:39,663 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:27:39,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:27:40,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:27:40,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:27:40,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:27:40,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:40,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4321 trivial. 0 not checked. [2022-11-16 11:27:40,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:27:40,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:40,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544228023] [2022-11-16 11:27:40,311 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:27:40,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600516003] [2022-11-16 11:27:40,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600516003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:40,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:40,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:27:40,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229247976] [2022-11-16 11:27:40,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:40,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:27:40,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:40,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:27:40,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:27:40,315 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 229 [2022-11-16 11:27:40,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 254 transitions, 960 flow. Second operand has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:40,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:40,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 229 [2022-11-16 11:27:40,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:40,997 INFO L130 PetriNetUnfolder]: 6/1440 cut-off events. [2022-11-16 11:27:40,997 INFO L131 PetriNetUnfolder]: For 732/742 co-relation queries the response was YES. [2022-11-16 11:27:41,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2059 conditions, 1440 events. 6/1440 cut-off events. For 732/742 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 532 event pairs, 0 based on Foata normal form. 3/1428 useless extension candidates. Maximal degree in co-relation 1901. Up to 38 conditions per place. [2022-11-16 11:27:41,005 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 11 selfloop transitions, 4 changer transitions 0/255 dead transitions. [2022-11-16 11:27:41,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 255 transitions, 992 flow [2022-11-16 11:27:41,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:27:41,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:27:41,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 997 transitions. [2022-11-16 11:27:41,008 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8707423580786027 [2022-11-16 11:27:41,008 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 997 transitions. [2022-11-16 11:27:41,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 997 transitions. [2022-11-16 11:27:41,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:41,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 997 transitions. [2022-11-16 11:27:41,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.4) internal successors, (997), 5 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:41,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:41,014 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:41,015 INFO L175 Difference]: Start difference. First operand has 297 places, 254 transitions, 960 flow. Second operand 5 states and 997 transitions. [2022-11-16 11:27:41,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 255 transitions, 992 flow [2022-11-16 11:27:41,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 255 transitions, 935 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-16 11:27:41,029 INFO L231 Difference]: Finished difference. Result has 283 places, 253 transitions, 913 flow [2022-11-16 11:27:41,029 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=913, PETRI_PLACES=283, PETRI_TRANSITIONS=253} [2022-11-16 11:27:41,030 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 77 predicate places. [2022-11-16 11:27:41,030 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 253 transitions, 913 flow [2022-11-16 11:27:41,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:41,031 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:41,032 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] [2022-11-16 11:27:41,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:27:41,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 11:27:41,238 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:27:41,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:41,239 INFO L85 PathProgramCache]: Analyzing trace with hash 953506468, now seen corresponding path program 1 times [2022-11-16 11:27:41,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:41,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720682630] [2022-11-16 11:27:41,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:41,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:41,395 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:27:41,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639933938] [2022-11-16 11:27:41,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:41,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:41,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:41,398 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:27:41,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:27:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:42,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 2659 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 11:27:42,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:44,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:44,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:27:46,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:46,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:46,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720682630] [2022-11-16 11:27:46,088 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:27:46,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639933938] [2022-11-16 11:27:46,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639933938] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:27:46,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:27:46,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-16 11:27:46,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676223159] [2022-11-16 11:27:46,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:27:46,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-16 11:27:46,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:46,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-16 11:27:46,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-16 11:27:46,103 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 229 [2022-11-16 11:27:46,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 253 transitions, 913 flow. Second operand has 61 states, 61 states have (on average 196.37704918032787) internal successors, (11979), 61 states have internal predecessors, (11979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:46,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:46,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 229 [2022-11-16 11:27:46,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:50,897 INFO L130 PetriNetUnfolder]: 6/2700 cut-off events. [2022-11-16 11:27:50,897 INFO L131 PetriNetUnfolder]: For 4949/4950 co-relation queries the response was YES. [2022-11-16 11:27:50,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4463 conditions, 2700 events. 6/2700 cut-off events. For 4949/4950 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 608 event pairs, 0 based on Foata normal form. 30/2716 useless extension candidates. Maximal degree in co-relation 4307. Up to 96 conditions per place. [2022-11-16 11:27:50,904 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 244 selfloop transitions, 91 changer transitions 0/525 dead transitions. [2022-11-16 11:27:50,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 525 transitions, 2995 flow [2022-11-16 11:27:50,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-16 11:27:50,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-16 11:27:50,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 17629 transitions. [2022-11-16 11:27:50,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.85536147501213 [2022-11-16 11:27:50,927 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 17629 transitions. [2022-11-16 11:27:50,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 17629 transitions. [2022-11-16 11:27:50,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:50,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 17629 transitions. [2022-11-16 11:27:50,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 195.87777777777777) internal successors, (17629), 90 states have internal predecessors, (17629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:50,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 229.0) internal successors, (20839), 91 states have internal predecessors, (20839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:50,994 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 229.0) internal successors, (20839), 91 states have internal predecessors, (20839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:50,995 INFO L175 Difference]: Start difference. First operand has 283 places, 253 transitions, 913 flow. Second operand 90 states and 17629 transitions. [2022-11-16 11:27:50,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 525 transitions, 2995 flow [2022-11-16 11:27:51,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 525 transitions, 2987 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:27:51,016 INFO L231 Difference]: Finished difference. Result has 384 places, 299 transitions, 1594 flow [2022-11-16 11:27:51,017 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1594, PETRI_PLACES=384, PETRI_TRANSITIONS=299} [2022-11-16 11:27:51,018 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 178 predicate places. [2022-11-16 11:27:51,018 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 299 transitions, 1594 flow [2022-11-16 11:27:51,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 196.37704918032787) internal successors, (11979), 61 states have internal predecessors, (11979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:51,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:51,022 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] [2022-11-16 11:27:51,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-16 11:27:51,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 11:27:51,232 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:27:51,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:51,233 INFO L85 PathProgramCache]: Analyzing trace with hash 327607207, now seen corresponding path program 2 times [2022-11-16 11:27:51,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:51,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981181118] [2022-11-16 11:27:51,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:51,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:51,467 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:27:51,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1962442683] [2022-11-16 11:27:51,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:27:51,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:51,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:51,470 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:27:51,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:27:52,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:27:52,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:27:52,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:27:52,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:52,602 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-16 11:27:52,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:27:52,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:52,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981181118] [2022-11-16 11:27:52,603 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:27:52,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962442683] [2022-11-16 11:27:52,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962442683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:52,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:52,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:27:52,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787157552] [2022-11-16 11:27:52,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:52,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:27:52,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:52,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:27:52,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:27:52,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 229 [2022-11-16 11:27:52,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 299 transitions, 1594 flow. Second operand has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:52,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:52,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 229 [2022-11-16 11:27:52,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:54,250 INFO L130 PetriNetUnfolder]: 6/2699 cut-off events. [2022-11-16 11:27:54,250 INFO L131 PetriNetUnfolder]: For 2959/2968 co-relation queries the response was YES. [2022-11-16 11:27:54,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4158 conditions, 2699 events. 6/2699 cut-off events. For 2959/2968 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 603 event pairs, 0 based on Foata normal form. 1/2687 useless extension candidates. Maximal degree in co-relation 3983. Up to 96 conditions per place. [2022-11-16 11:27:54,258 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 9 selfloop transitions, 3 changer transitions 0/298 dead transitions. [2022-11-16 11:27:54,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 298 transitions, 1616 flow [2022-11-16 11:27:54,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:27:54,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:27:54,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 797 transitions. [2022-11-16 11:27:54,260 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8700873362445415 [2022-11-16 11:27:54,260 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 797 transitions. [2022-11-16 11:27:54,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 797 transitions. [2022-11-16 11:27:54,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:54,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 797 transitions. [2022-11-16 11:27:54,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 199.25) internal successors, (797), 4 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:54,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:54,264 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:54,264 INFO L175 Difference]: Start difference. First operand has 384 places, 299 transitions, 1594 flow. Second operand 4 states and 797 transitions. [2022-11-16 11:27:54,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 298 transitions, 1616 flow [2022-11-16 11:27:54,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 298 transitions, 1497 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-16 11:27:54,292 INFO L231 Difference]: Finished difference. Result has 344 places, 298 transitions, 1479 flow [2022-11-16 11:27:54,293 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1479, PETRI_PLACES=344, PETRI_TRANSITIONS=298} [2022-11-16 11:27:54,294 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 138 predicate places. [2022-11-16 11:27:54,294 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 298 transitions, 1479 flow [2022-11-16 11:27:54,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:54,294 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:54,295 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] [2022-11-16 11:27:54,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:27:54,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 11:27:54,502 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:27:54,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:54,503 INFO L85 PathProgramCache]: Analyzing trace with hash -2104014149, now seen corresponding path program 1 times [2022-11-16 11:27:54,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:54,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725362462] [2022-11-16 11:27:54,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:54,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:54,765 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:27:54,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088782359] [2022-11-16 11:27:54,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:54,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:54,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:54,769 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:27:54,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 11:27:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:56,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 5185 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:27:56,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:58,676 INFO L134 CoverageAnalysis]: Checked inductivity of 17871 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17870 trivial. 0 not checked. [2022-11-16 11:27:58,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:28:01,016 INFO L134 CoverageAnalysis]: Checked inductivity of 17871 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17870 trivial. 0 not checked. [2022-11-16 11:28:01,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:01,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725362462] [2022-11-16 11:28:01,017 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:28:01,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088782359] [2022-11-16 11:28:01,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088782359] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:28:01,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:28:01,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 11:28:01,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905244466] [2022-11-16 11:28:01,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:28:01,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:28:01,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:01,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:28:01,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:28:01,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 229 [2022-11-16 11:28:01,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 298 transitions, 1479 flow. Second operand has 8 states, 8 states have (on average 192.75) internal successors, (1542), 8 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:01,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:28:01,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 229 [2022-11-16 11:28:01,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:28:04,228 INFO L130 PetriNetUnfolder]: 7/4005 cut-off events. [2022-11-16 11:28:04,229 INFO L131 PetriNetUnfolder]: For 4610/4611 co-relation queries the response was YES. [2022-11-16 11:28:04,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6537 conditions, 4005 events. 7/4005 cut-off events. For 4610/4611 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 510 event pairs, 0 based on Foata normal form. 3/3995 useless extension candidates. Maximal degree in co-relation 6367. Up to 187 conditions per place. [2022-11-16 11:28:04,240 INFO L137 encePairwiseOnDemand]: 222/229 looper letters, 38 selfloop transitions, 9 changer transitions 0/322 dead transitions. [2022-11-16 11:28:04,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 322 transitions, 1635 flow [2022-11-16 11:28:04,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:28:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:28:04,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1751 transitions. [2022-11-16 11:28:04,244 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8495875788452207 [2022-11-16 11:28:04,244 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1751 transitions. [2022-11-16 11:28:04,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1751 transitions. [2022-11-16 11:28:04,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:28:04,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1751 transitions. [2022-11-16 11:28:04,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 194.55555555555554) internal successors, (1751), 9 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:04,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:04,249 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:04,249 INFO L175 Difference]: Start difference. First operand has 344 places, 298 transitions, 1479 flow. Second operand 9 states and 1751 transitions. [2022-11-16 11:28:04,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 322 transitions, 1635 flow [2022-11-16 11:28:04,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 322 transitions, 1629 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:28:04,288 INFO L231 Difference]: Finished difference. Result has 354 places, 302 transitions, 1529 flow [2022-11-16 11:28:04,289 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1529, PETRI_PLACES=354, PETRI_TRANSITIONS=302} [2022-11-16 11:28:04,289 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 148 predicate places. [2022-11-16 11:28:04,290 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 302 transitions, 1529 flow [2022-11-16 11:28:04,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 192.75) internal successors, (1542), 8 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:04,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:28:04,291 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] [2022-11-16 11:28:04,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:28:04,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:28:04,511 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:28:04,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:04,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1787573805, now seen corresponding path program 1 times [2022-11-16 11:28:04,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:04,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393861686] [2022-11-16 11:28:04,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:04,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:04,726 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:28:04,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096235530] [2022-11-16 11:28:04,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:04,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:28:04,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:28:04,729 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:28:04,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 11:28:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:10,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 5331 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:28:10,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:28:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-16 11:28:12,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:28:15,242 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-16 11:28:15,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:15,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393861686] [2022-11-16 11:28:15,243 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:28:15,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096235530] [2022-11-16 11:28:15,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096235530] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:28:15,243 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:28:15,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 11:28:15,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338932446] [2022-11-16 11:28:15,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:28:15,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:28:15,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:15,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:28:15,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:28:15,250 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 229 [2022-11-16 11:28:15,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 302 transitions, 1529 flow. Second operand has 14 states, 14 states have (on average 184.35714285714286) internal successors, (2581), 14 states have internal predecessors, (2581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:15,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:28:15,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 229 [2022-11-16 11:28:15,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:28:19,583 INFO L130 PetriNetUnfolder]: 7/3973 cut-off events. [2022-11-16 11:28:19,583 INFO L131 PetriNetUnfolder]: For 4797/4798 co-relation queries the response was YES. [2022-11-16 11:28:19,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6982 conditions, 3973 events. 7/3973 cut-off events. For 4797/4798 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 359 event pairs, 0 based on Foata normal form. 32/3992 useless extension candidates. Maximal degree in co-relation 6810. Up to 307 conditions per place. [2022-11-16 11:28:19,599 INFO L137 encePairwiseOnDemand]: 215/229 looper letters, 224 selfloop transitions, 144 changer transitions 0/542 dead transitions. [2022-11-16 11:28:19,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 542 transitions, 4389 flow [2022-11-16 11:28:19,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:28:19,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 11:28:19,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4399 transitions. [2022-11-16 11:28:19,605 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8004002911208151 [2022-11-16 11:28:19,606 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4399 transitions. [2022-11-16 11:28:19,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4399 transitions. [2022-11-16 11:28:19,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:28:19,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4399 transitions. [2022-11-16 11:28:19,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 183.29166666666666) internal successors, (4399), 24 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:19,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 229.0) internal successors, (5725), 25 states have internal predecessors, (5725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:19,619 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 229.0) internal successors, (5725), 25 states have internal predecessors, (5725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:19,619 INFO L175 Difference]: Start difference. First operand has 354 places, 302 transitions, 1529 flow. Second operand 24 states and 4399 transitions. [2022-11-16 11:28:19,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 542 transitions, 4389 flow [2022-11-16 11:28:19,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 542 transitions, 4373 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-16 11:28:19,660 INFO L231 Difference]: Finished difference. Result has 378 places, 433 transitions, 3568 flow [2022-11-16 11:28:19,660 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1507, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3568, PETRI_PLACES=378, PETRI_TRANSITIONS=433} [2022-11-16 11:28:19,661 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 172 predicate places. [2022-11-16 11:28:19,661 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 433 transitions, 3568 flow [2022-11-16 11:28:19,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 184.35714285714286) internal successors, (2581), 14 states have internal predecessors, (2581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:19,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:28:19,663 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] [2022-11-16 11:28:19,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-16 11:28:19,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 11:28:19,863 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:28:19,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:19,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1783092791, now seen corresponding path program 1 times [2022-11-16 11:28:19,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:19,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573428197] [2022-11-16 11:28:19,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:19,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:20,078 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:28:20,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [427041003] [2022-11-16 11:28:20,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:20,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:28:20,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:28:20,080 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:28:20,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 11:28:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:26,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 5499 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:28:26,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:28:28,739 INFO L134 CoverageAnalysis]: Checked inductivity of 20475 backedges. 2610 proven. 0 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-16 11:28:28,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:28:28,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:28,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573428197] [2022-11-16 11:28:28,740 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:28:28,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427041003] [2022-11-16 11:28:28,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427041003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:28,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:28,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:28:28,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993226185] [2022-11-16 11:28:28,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:28,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:28:28,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:28,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:28:28,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:28:28,745 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 229 [2022-11-16 11:28:28,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 433 transitions, 3568 flow. Second operand has 11 states, 11 states have (on average 183.45454545454547) internal successors, (2018), 11 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:28,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:28:28,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 229 [2022-11-16 11:28:28,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:28:32,131 INFO L130 PetriNetUnfolder]: 7/3916 cut-off events. [2022-11-16 11:28:32,131 INFO L131 PetriNetUnfolder]: For 7135/7136 co-relation queries the response was YES. [2022-11-16 11:28:32,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7454 conditions, 3916 events. 7/3916 cut-off events. For 7135/7136 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 250 event pairs, 0 based on Foata normal form. 57/3960 useless extension candidates. Maximal degree in co-relation 7276. Up to 370 conditions per place. [2022-11-16 11:28:32,145 INFO L137 encePairwiseOnDemand]: 219/229 looper letters, 208 selfloop transitions, 139 changer transitions 0/521 dead transitions. [2022-11-16 11:28:32,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 521 transitions, 5044 flow [2022-11-16 11:28:32,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:28:32,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 11:28:32,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2751 transitions. [2022-11-16 11:28:32,149 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8008733624454148 [2022-11-16 11:28:32,149 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2751 transitions. [2022-11-16 11:28:32,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2751 transitions. [2022-11-16 11:28:32,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:28:32,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2751 transitions. [2022-11-16 11:28:32,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 183.4) internal successors, (2751), 15 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:32,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 229.0) internal successors, (3664), 16 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:32,159 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 229.0) internal successors, (3664), 16 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:32,159 INFO L175 Difference]: Start difference. First operand has 378 places, 433 transitions, 3568 flow. Second operand 15 states and 2751 transitions. [2022-11-16 11:28:32,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 521 transitions, 5044 flow [2022-11-16 11:28:32,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 521 transitions, 5012 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-11-16 11:28:32,374 INFO L231 Difference]: Finished difference. Result has 385 places, 490 transitions, 4747 flow [2022-11-16 11:28:32,376 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=3517, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4747, PETRI_PLACES=385, PETRI_TRANSITIONS=490} [2022-11-16 11:28:32,377 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 179 predicate places. [2022-11-16 11:28:32,377 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 490 transitions, 4747 flow [2022-11-16 11:28:32,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 183.45454545454547) internal successors, (2018), 11 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:32,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:28:32,378 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] [2022-11-16 11:28:32,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 11:28:32,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:28:32,588 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:28:32,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:32,589 INFO L85 PathProgramCache]: Analyzing trace with hash 790117986, now seen corresponding path program 2 times [2022-11-16 11:28:32,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:32,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998414529] [2022-11-16 11:28:32,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:32,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:32,926 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:28:32,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [816613267] [2022-11-16 11:28:32,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:28:32,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:28:32,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:28:32,929 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:28:32,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 11:30:30,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:30:30,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:30:30,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 10558 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:30:30,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:30:35,250 INFO L134 CoverageAnalysis]: Checked inductivity of 77817 backedges. 42044 proven. 0 refuted. 0 times theorem prover too weak. 35773 trivial. 0 not checked. [2022-11-16 11:30:35,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:30:35,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:35,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998414529] [2022-11-16 11:30:35,251 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:30:35,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816613267] [2022-11-16 11:30:35,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816613267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:35,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:30:35,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:30:35,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056317012] [2022-11-16 11:30:35,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:35,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:30:35,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:35,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:30:35,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:30:35,257 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 229 [2022-11-16 11:30:35,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 490 transitions, 4747 flow. Second operand has 9 states, 9 states have (on average 189.44444444444446) internal successors, (1705), 9 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:35,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:30:35,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 229 [2022-11-16 11:30:35,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:30:38,472 INFO L130 PetriNetUnfolder]: 7/3888 cut-off events. [2022-11-16 11:30:38,472 INFO L131 PetriNetUnfolder]: For 9584/9585 co-relation queries the response was YES. [2022-11-16 11:30:38,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7293 conditions, 3888 events. 7/3888 cut-off events. For 9584/9585 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 224 event pairs, 0 based on Foata normal form. 28/3903 useless extension candidates. Maximal degree in co-relation 7113. Up to 217 conditions per place. [2022-11-16 11:30:38,482 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 200 selfloop transitions, 49 changer transitions 0/515 dead transitions. [2022-11-16 11:30:38,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 515 transitions, 5490 flow [2022-11-16 11:30:38,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:30:38,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:30:38,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2265 transitions. [2022-11-16 11:30:38,485 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.824235807860262 [2022-11-16 11:30:38,485 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2265 transitions. [2022-11-16 11:30:38,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2265 transitions. [2022-11-16 11:30:38,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:30:38,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2265 transitions. [2022-11-16 11:30:38,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 188.75) internal successors, (2265), 12 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:38,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:38,491 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:38,491 INFO L175 Difference]: Start difference. First operand has 385 places, 490 transitions, 4747 flow. Second operand 12 states and 2265 transitions. [2022-11-16 11:30:38,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 515 transitions, 5490 flow [2022-11-16 11:30:38,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 515 transitions, 5314 flow, removed 59 selfloop flow, removed 9 redundant places. [2022-11-16 11:30:38,531 INFO L231 Difference]: Finished difference. Result has 387 places, 495 transitions, 4794 flow [2022-11-16 11:30:38,532 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=4559, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4794, PETRI_PLACES=387, PETRI_TRANSITIONS=495} [2022-11-16 11:30:38,533 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 181 predicate places. [2022-11-16 11:30:38,533 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 495 transitions, 4794 flow [2022-11-16 11:30:38,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.44444444444446) internal successors, (1705), 9 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:38,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:30:38,534 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] [2022-11-16 11:30:38,734 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forcibly destroying the process [2022-11-16 11:30:38,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 137 [2022-11-16 11:30:38,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 11:30:38,793 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:30:38,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:38,793 INFO L85 PathProgramCache]: Analyzing trace with hash -839043317, now seen corresponding path program 2 times [2022-11-16 11:30:38,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:38,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643951265] [2022-11-16 11:30:38,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:38,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:39,279 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:30:39,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1595811491] [2022-11-16 11:30:39,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:30:39,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:30:39,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:30:39,295 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:30:39,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 11:30:43,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:30:43,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:30:43,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 15305 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:30:44,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:30:50,071 INFO L134 CoverageAnalysis]: Checked inductivity of 164531 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53600 trivial. 0 not checked. [2022-11-16 11:30:50,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:30:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 164531 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53600 trivial. 0 not checked. [2022-11-16 11:30:57,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:57,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643951265] [2022-11-16 11:30:57,348 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:30:57,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595811491] [2022-11-16 11:30:57,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595811491] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:30:57,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:30:57,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 11:30:57,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574081207] [2022-11-16 11:30:57,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:30:57,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:30:57,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:57,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:30:57,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:30:57,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 229 [2022-11-16 11:30:57,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 495 transitions, 4794 flow. Second operand has 16 states, 16 states have (on average 193.875) internal successors, (3102), 16 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:57,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:30:57,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 229 [2022-11-16 11:30:57,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:31:11,902 INFO L130 PetriNetUnfolder]: 11/8876 cut-off events. [2022-11-16 11:31:11,903 INFO L131 PetriNetUnfolder]: For 21631/21632 co-relation queries the response was YES. [2022-11-16 11:31:11,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16492 conditions, 8876 events. 11/8876 cut-off events. For 21631/21632 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 228 event pairs, 0 based on Foata normal form. 4/8867 useless extension candidates. Maximal degree in co-relation 16312. Up to 336 conditions per place. [2022-11-16 11:31:11,933 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 74 selfloop transitions, 21 changer transitions 0/563 dead transitions. [2022-11-16 11:31:11,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 563 transitions, 5284 flow [2022-11-16 11:31:11,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:31:11,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:31:11,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4063 transitions. [2022-11-16 11:31:11,938 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8448741942191724 [2022-11-16 11:31:11,938 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4063 transitions. [2022-11-16 11:31:11,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4063 transitions. [2022-11-16 11:31:11,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:31:11,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4063 transitions. [2022-11-16 11:31:11,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 193.47619047619048) internal successors, (4063), 21 states have internal predecessors, (4063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:11,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 229.0) internal successors, (5038), 22 states have internal predecessors, (5038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:11,951 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 229.0) internal successors, (5038), 22 states have internal predecessors, (5038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:11,951 INFO L175 Difference]: Start difference. First operand has 387 places, 495 transitions, 4794 flow. Second operand 21 states and 4063 transitions. [2022-11-16 11:31:11,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 563 transitions, 5284 flow [2022-11-16 11:31:12,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 563 transitions, 5227 flow, removed 6 selfloop flow, removed 9 redundant places. [2022-11-16 11:31:12,037 INFO L231 Difference]: Finished difference. Result has 403 places, 508 transitions, 4935 flow [2022-11-16 11:31:12,037 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=4761, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4935, PETRI_PLACES=403, PETRI_TRANSITIONS=508} [2022-11-16 11:31:12,038 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 197 predicate places. [2022-11-16 11:31:12,038 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 508 transitions, 4935 flow [2022-11-16 11:31:12,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 193.875) internal successors, (3102), 16 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:12,039 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:31:12,041 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] [2022-11-16 11:31:12,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 11:31:12,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:31:12,256 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 11:31:12,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:12,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1717077931, now seen corresponding path program 3 times [2022-11-16 11:31:12,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:31:12,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487667704] [2022-11-16 11:31:12,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:12,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:31:13,373 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:31:13,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1531973874] [2022-11-16 11:31:13,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:31:13,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:31:13,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:31:13,379 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:31:13,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7391f0a-53bc-4ba5-9b9b-6d6318793b2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process