./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN --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 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --- 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-6b4ec56 [2022-11-20 09:31:16,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:31:16,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:31:16,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:31:16,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:31:16,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:31:16,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:31:16,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:31:16,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:31:16,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:31:16,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:31:16,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:31:16,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:31:16,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:31:16,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:31:16,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:31:16,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:31:16,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:31:16,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:31:16,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:31:16,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:31:16,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:31:16,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:31:16,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:31:16,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:31:16,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:31:16,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:31:16,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:31:16,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:31:16,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:31:16,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:31:16,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:31:16,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:31:16,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:31:16,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:31:16,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:31:16,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:31:16,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:31:16,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:31:16,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:31:16,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:31:16,779 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 09:31:16,819 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:31:16,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:31:16,820 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:31:16,820 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:31:16,821 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:31:16,821 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:31:16,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:31:16,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:31:16,822 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:31:16,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:31:16,824 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:31:16,824 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:31:16,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:31:16,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:31:16,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:31:16,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:31:16,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:31:16,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:31:16,825 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 09:31:16,825 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:31:16,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:31:16,826 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:31:16,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:31:16,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:31:16,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:31:16,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:31:16,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:31:16,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:31:16,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:31:16,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:31:16,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:31:16,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:31:16,828 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:31:16,828 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:31:16,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:31:16,829 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_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e [2022-11-20 09:31:17,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:31:17,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:31:17,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:31:17,183 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:31:17,183 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:31:17,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2022-11-20 09:31:20,359 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:31:20,699 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:31:20,699 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2022-11-20 09:31:20,713 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/data/73e30cabe/cf2d7cb3bf99440bb1b720baa21bcc5d/FLAG40f751294 [2022-11-20 09:31:20,726 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/data/73e30cabe/cf2d7cb3bf99440bb1b720baa21bcc5d [2022-11-20 09:31:20,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:31:20,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:31:20,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:31:20,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:31:20,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:31:20,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:31:20" (1/1) ... [2022-11-20 09:31:20,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a02546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:20, skipping insertion in model container [2022-11-20 09:31:20,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:31:20" (1/1) ... [2022-11-20 09:31:20,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:31:20,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:31:21,224 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 09:31:21,224 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 09:31:21,225 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 09:31:21,225 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 09:31:21,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:31:21,260 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:31:21,309 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 09:31:21,309 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 09:31:21,310 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 09:31:21,310 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 09:31:21,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:31:21,367 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:31:21,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:21 WrapperNode [2022-11-20 09:31:21,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:31:21,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:31:21,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:31:21,369 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:31:21,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:21" (1/1) ... [2022-11-20 09:31:21,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:21" (1/1) ... [2022-11-20 09:31:21,421 INFO L138 Inliner]: procedures = 271, calls = 32, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 127 [2022-11-20 09:31:21,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:31:21,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:31:21,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:31:21,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:31:21,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:21" (1/1) ... [2022-11-20 09:31:21,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:21" (1/1) ... [2022-11-20 09:31:21,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:21" (1/1) ... [2022-11-20 09:31:21,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:21" (1/1) ... [2022-11-20 09:31:21,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:21" (1/1) ... [2022-11-20 09:31:21,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:21" (1/1) ... [2022-11-20 09:31:21,479 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:21" (1/1) ... [2022-11-20 09:31:21,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:21" (1/1) ... [2022-11-20 09:31:21,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:31:21,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:31:21,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:31:21,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:31:21,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:21" (1/1) ... [2022-11-20 09:31:21,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:31:21,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:21,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:31:21,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:31:21,580 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-20 09:31:21,580 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-20 09:31:21,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:31:21,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 09:31:21,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:31:21,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:31:21,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:31:21,581 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 09:31:21,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:31:21,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:31:21,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 09:31:21,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:31:21,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:31:21,584 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 09:31:21,771 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:31:21,781 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:31:22,198 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:31:22,207 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:31:22,207 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 09:31:22,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:31:22 BoogieIcfgContainer [2022-11-20 09:31:22,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:31:22,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:31:22,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:31:22,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:31:22,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:31:20" (1/3) ... [2022-11-20 09:31:22,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ac18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:31:22, skipping insertion in model container [2022-11-20 09:31:22,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:21" (2/3) ... [2022-11-20 09:31:22,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ac18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:31:22, skipping insertion in model container [2022-11-20 09:31:22,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:31:22" (3/3) ... [2022-11-20 09:31:22,219 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_21-arrayloop2_nr.i [2022-11-20 09:31:22,227 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 09:31:22,238 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:31:22,238 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-20 09:31:22,238 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:31:22,419 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 09:31:22,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 203 transitions, 416 flow [2022-11-20 09:31:22,547 INFO L130 PetriNetUnfolder]: 14/201 cut-off events. [2022-11-20 09:31:22,547 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:31:22,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 201 events. 14/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 503 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2022-11-20 09:31:22,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 203 transitions, 416 flow [2022-11-20 09:31:22,561 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 201 transitions, 408 flow [2022-11-20 09:31:22,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:31:22,578 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;@356a533b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:31:22,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-20 09:31:22,603 INFO L130 PetriNetUnfolder]: 2/48 cut-off events. [2022-11-20 09:31:22,603 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:31:22,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:22,604 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] [2022-11-20 09:31:22,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:31:22,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:22,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1502815099, now seen corresponding path program 1 times [2022-11-20 09:31:22,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:22,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554412554] [2022-11-20 09:31:22,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:22,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:22,781 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:31:22,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639991052] [2022-11-20 09:31:22,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:22,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:22,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:22,793 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:22,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:31:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:22,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:31:22,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:23,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:23,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:23,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554412554] [2022-11-20 09:31:23,021 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:31:23,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639991052] [2022-11-20 09:31:23,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639991052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:23,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:23,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:31:23,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916411754] [2022-11-20 09:31:23,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:23,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:31:23,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:23,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:31:23,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:31:23,079 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 203 [2022-11-20 09:31:23,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 201 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:23,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:23,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 203 [2022-11-20 09:31:23,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:23,237 INFO L130 PetriNetUnfolder]: 7/253 cut-off events. [2022-11-20 09:31:23,237 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 09:31:23,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 253 events. 7/253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 749 event pairs, 0 based on Foata normal form. 8/234 useless extension candidates. Maximal degree in co-relation 221. Up to 17 conditions per place. [2022-11-20 09:31:23,242 INFO L137 encePairwiseOnDemand]: 190/203 looper letters, 23 selfloop transitions, 2 changer transitions 0/202 dead transitions. [2022-11-20 09:31:23,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 202 transitions, 460 flow [2022-11-20 09:31:23,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:31:23,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 09:31:23,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2022-11-20 09:31:23,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9441707717569786 [2022-11-20 09:31:23,258 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2022-11-20 09:31:23,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2022-11-20 09:31:23,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:23,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2022-11-20 09:31:23,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:23,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:23,275 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:23,277 INFO L175 Difference]: Start difference. First operand has 194 places, 201 transitions, 408 flow. Second operand 3 states and 575 transitions. [2022-11-20 09:31:23,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 202 transitions, 460 flow [2022-11-20 09:31:23,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 202 transitions, 458 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 09:31:23,286 INFO L231 Difference]: Finished difference. Result has 195 places, 194 transitions, 406 flow [2022-11-20 09:31:23,288 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=406, PETRI_PLACES=195, PETRI_TRANSITIONS=194} [2022-11-20 09:31:23,292 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 1 predicate places. [2022-11-20 09:31:23,292 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 194 transitions, 406 flow [2022-11-20 09:31:23,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:23,293 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:23,293 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] [2022-11-20 09:31:23,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:23,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 09:31:23,499 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:31:23,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:23,500 INFO L85 PathProgramCache]: Analyzing trace with hash -657374059, now seen corresponding path program 1 times [2022-11-20 09:31:23,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:23,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277725313] [2022-11-20 09:31:23,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:23,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:23,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:23,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277725313] [2022-11-20 09:31:23,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277725313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:23,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:23,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:31:23,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548439271] [2022-11-20 09:31:23,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:23,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:31:23,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:23,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:31:23,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:31:23,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 203 [2022-11-20 09:31:23,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 194 transitions, 406 flow. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:23,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:23,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 203 [2022-11-20 09:31:23,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:23,878 INFO L130 PetriNetUnfolder]: 7/337 cut-off events. [2022-11-20 09:31:23,878 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 09:31:23,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 337 events. 7/337 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 717 event pairs, 0 based on Foata normal form. 2/311 useless extension candidates. Maximal degree in co-relation 246. Up to 22 conditions per place. [2022-11-20 09:31:23,881 INFO L137 encePairwiseOnDemand]: 198/203 looper letters, 17 selfloop transitions, 2 changer transitions 0/200 dead transitions. [2022-11-20 09:31:23,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 200 transitions, 456 flow [2022-11-20 09:31:23,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:31:23,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 09:31:23,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 568 transitions. [2022-11-20 09:31:23,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9326765188834154 [2022-11-20 09:31:23,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 568 transitions. [2022-11-20 09:31:23,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 568 transitions. [2022-11-20 09:31:23,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:23,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 568 transitions. [2022-11-20 09:31:23,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:23,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:23,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:23,891 INFO L175 Difference]: Start difference. First operand has 195 places, 194 transitions, 406 flow. Second operand 3 states and 568 transitions. [2022-11-20 09:31:23,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 200 transitions, 456 flow [2022-11-20 09:31:23,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 200 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:31:23,897 INFO L231 Difference]: Finished difference. Result has 197 places, 195 transitions, 420 flow [2022-11-20 09:31:23,897 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=420, PETRI_PLACES=197, PETRI_TRANSITIONS=195} [2022-11-20 09:31:23,898 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 3 predicate places. [2022-11-20 09:31:23,898 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 195 transitions, 420 flow [2022-11-20 09:31:23,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:23,899 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:23,899 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] [2022-11-20 09:31:23,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:31:23,900 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:31:23,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:23,901 INFO L85 PathProgramCache]: Analyzing trace with hash -371900578, now seen corresponding path program 1 times [2022-11-20 09:31:23,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:23,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045675541] [2022-11-20 09:31:23,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:23,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:23,934 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:31:23,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1233131173] [2022-11-20 09:31:23,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:23,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:23,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:23,936 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:23,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:31:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:24,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:31:24,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:24,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:24,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:24,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:24,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045675541] [2022-11-20 09:31:24,276 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:31:24,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233131173] [2022-11-20 09:31:24,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233131173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:24,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:24,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:31:24,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666348466] [2022-11-20 09:31:24,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:24,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:31:24,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:24,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:31:24,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:31:24,280 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-20 09:31:24,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 195 transitions, 420 flow. Second operand has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:24,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:24,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-20 09:31:24,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:24,430 INFO L130 PetriNetUnfolder]: 7/337 cut-off events. [2022-11-20 09:31:24,431 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-20 09:31:24,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 337 events. 7/337 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 717 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 199. Up to 30 conditions per place. [2022-11-20 09:31:24,435 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 23 selfloop transitions, 5 changer transitions 0/204 dead transitions. [2022-11-20 09:31:24,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 204 transitions, 494 flow [2022-11-20 09:31:24,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:31:24,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:31:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 914 transitions. [2022-11-20 09:31:24,439 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9004926108374385 [2022-11-20 09:31:24,440 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 914 transitions. [2022-11-20 09:31:24,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 914 transitions. [2022-11-20 09:31:24,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:24,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 914 transitions. [2022-11-20 09:31:24,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:24,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:24,448 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:24,449 INFO L175 Difference]: Start difference. First operand has 197 places, 195 transitions, 420 flow. Second operand 5 states and 914 transitions. [2022-11-20 09:31:24,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 204 transitions, 494 flow [2022-11-20 09:31:24,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 204 transitions, 492 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:31:24,456 INFO L231 Difference]: Finished difference. Result has 204 places, 198 transitions, 452 flow [2022-11-20 09:31:24,457 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=204, PETRI_TRANSITIONS=198} [2022-11-20 09:31:24,460 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 10 predicate places. [2022-11-20 09:31:24,460 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 198 transitions, 452 flow [2022-11-20 09:31:24,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:24,461 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:24,461 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:24,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:24,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:24,667 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:31:24,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:24,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1355984203, now seen corresponding path program 1 times [2022-11-20 09:31:24,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:24,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663753067] [2022-11-20 09:31:24,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:24,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:24,725 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:31:24,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305561123] [2022-11-20 09:31:24,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:24,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:24,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:24,727 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:24,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:31:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:24,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:31:24,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:25,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:25,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:25,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:25,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663753067] [2022-11-20 09:31:25,013 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:31:25,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305561123] [2022-11-20 09:31:25,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305561123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:25,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:25,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:31:25,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39568208] [2022-11-20 09:31:25,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:25,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:31:25,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:25,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:31:25,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:31:25,019 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-20 09:31:25,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 198 transitions, 452 flow. Second operand has 4 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:25,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:25,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-20 09:31:25,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:25,136 INFO L130 PetriNetUnfolder]: 7/333 cut-off events. [2022-11-20 09:31:25,136 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-20 09:31:25,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 333 events. 7/333 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 709 event pairs, 0 based on Foata normal form. 4/319 useless extension candidates. Maximal degree in co-relation 248. Up to 28 conditions per place. [2022-11-20 09:31:25,138 INFO L137 encePairwiseOnDemand]: 199/203 looper letters, 16 selfloop transitions, 5 changer transitions 0/197 dead transitions. [2022-11-20 09:31:25,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 197 transitions, 492 flow [2022-11-20 09:31:25,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:31:25,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:31:25,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 727 transitions. [2022-11-20 09:31:25,141 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.895320197044335 [2022-11-20 09:31:25,141 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 727 transitions. [2022-11-20 09:31:25,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 727 transitions. [2022-11-20 09:31:25,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:25,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 727 transitions. [2022-11-20 09:31:25,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:25,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:25,148 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:25,148 INFO L175 Difference]: Start difference. First operand has 204 places, 198 transitions, 452 flow. Second operand 4 states and 727 transitions. [2022-11-20 09:31:25,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 197 transitions, 492 flow [2022-11-20 09:31:25,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 197 transitions, 483 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 09:31:25,153 INFO L231 Difference]: Finished difference. Result has 204 places, 197 transitions, 454 flow [2022-11-20 09:31:25,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=454, PETRI_PLACES=204, PETRI_TRANSITIONS=197} [2022-11-20 09:31:25,155 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 10 predicate places. [2022-11-20 09:31:25,156 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 197 transitions, 454 flow [2022-11-20 09:31:25,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:25,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:25,157 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] [2022-11-20 09:31:25,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:25,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:25,362 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:31:25,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:25,363 INFO L85 PathProgramCache]: Analyzing trace with hash 682359355, now seen corresponding path program 1 times [2022-11-20 09:31:25,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:25,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544733185] [2022-11-20 09:31:25,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:25,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:25,394 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:31:25,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171522153] [2022-11-20 09:31:25,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:25,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:25,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:25,396 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:25,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:31:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:25,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:31:25,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:25,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:25,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:25,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:25,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544733185] [2022-11-20 09:31:25,719 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:31:25,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171522153] [2022-11-20 09:31:25,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171522153] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:25,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:31:25,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 09:31:25,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042346128] [2022-11-20 09:31:25,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:25,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:31:25,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:25,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:31:25,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:31:25,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-20 09:31:25,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 197 transitions, 454 flow. Second operand has 8 states, 8 states have (on average 179.875) internal successors, (1439), 8 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:25,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:25,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-20 09:31:25,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:25,927 INFO L130 PetriNetUnfolder]: 7/419 cut-off events. [2022-11-20 09:31:25,927 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-20 09:31:25,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 419 events. 7/419 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 461 event pairs, 0 based on Foata normal form. 6/407 useless extension candidates. Maximal degree in co-relation 315. Up to 22 conditions per place. [2022-11-20 09:31:25,930 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 29 selfloop transitions, 10 changer transitions 0/215 dead transitions. [2022-11-20 09:31:25,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 215 transitions, 586 flow [2022-11-20 09:31:25,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:31:25,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 09:31:25,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1634 transitions. [2022-11-20 09:31:25,935 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8943623426382047 [2022-11-20 09:31:25,935 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1634 transitions. [2022-11-20 09:31:25,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1634 transitions. [2022-11-20 09:31:25,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:25,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1634 transitions. [2022-11-20 09:31:25,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 181.55555555555554) internal successors, (1634), 9 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:25,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:25,947 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:25,947 INFO L175 Difference]: Start difference. First operand has 204 places, 197 transitions, 454 flow. Second operand 9 states and 1634 transitions. [2022-11-20 09:31:25,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 215 transitions, 586 flow [2022-11-20 09:31:25,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 215 transitions, 573 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 09:31:25,953 INFO L231 Difference]: Finished difference. Result has 215 places, 201 transitions, 504 flow [2022-11-20 09:31:25,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=504, PETRI_PLACES=215, PETRI_TRANSITIONS=201} [2022-11-20 09:31:25,954 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 21 predicate places. [2022-11-20 09:31:25,954 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 201 transitions, 504 flow [2022-11-20 09:31:25,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 179.875) internal successors, (1439), 8 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:25,955 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:25,955 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] [2022-11-20 09:31:25,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:26,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:26,162 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:31:26,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:26,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1573270686, now seen corresponding path program 1 times [2022-11-20 09:31:26,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:26,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940554362] [2022-11-20 09:31:26,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:26,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:26,208 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:31:26,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038851400] [2022-11-20 09:31:26,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:26,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:26,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:26,210 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:26,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:31:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:26,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:31:26,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:26,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:26,864 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:26,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:26,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940554362] [2022-11-20 09:31:26,865 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:31:26,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038851400] [2022-11-20 09:31:26,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038851400] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:26,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:31:26,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 09:31:26,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650512903] [2022-11-20 09:31:26,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:26,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 09:31:26,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:26,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 09:31:26,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:31:26,873 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-20 09:31:26,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 201 transitions, 504 flow. Second operand has 14 states, 14 states have (on average 180.64285714285714) internal successors, (2529), 14 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:26,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:26,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-20 09:31:26,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:27,199 INFO L130 PetriNetUnfolder]: 13/641 cut-off events. [2022-11-20 09:31:27,199 INFO L131 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2022-11-20 09:31:27,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 641 events. 13/641 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1265 event pairs, 0 based on Foata normal form. 4/609 useless extension candidates. Maximal degree in co-relation 535. Up to 19 conditions per place. [2022-11-20 09:31:27,203 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 37 selfloop transitions, 16 changer transitions 0/229 dead transitions. [2022-11-20 09:31:27,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 229 transitions, 718 flow [2022-11-20 09:31:27,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 09:31:27,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 09:31:27,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2710 transitions. [2022-11-20 09:31:27,210 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8899835796387521 [2022-11-20 09:31:27,210 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2710 transitions. [2022-11-20 09:31:27,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2710 transitions. [2022-11-20 09:31:27,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:27,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2710 transitions. [2022-11-20 09:31:27,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 180.66666666666666) internal successors, (2710), 15 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:27,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:27,229 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:27,229 INFO L175 Difference]: Start difference. First operand has 215 places, 201 transitions, 504 flow. Second operand 15 states and 2710 transitions. [2022-11-20 09:31:27,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 229 transitions, 718 flow [2022-11-20 09:31:27,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 229 transitions, 700 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-20 09:31:27,239 INFO L231 Difference]: Finished difference. Result has 224 places, 205 transitions, 553 flow [2022-11-20 09:31:27,240 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=553, PETRI_PLACES=224, PETRI_TRANSITIONS=205} [2022-11-20 09:31:27,242 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 30 predicate places. [2022-11-20 09:31:27,243 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 205 transitions, 553 flow [2022-11-20 09:31:27,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 180.64285714285714) internal successors, (2529), 14 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:27,244 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:27,244 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] [2022-11-20 09:31:27,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:27,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:27,451 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:31:27,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:27,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2027945851, now seen corresponding path program 2 times [2022-11-20 09:31:27,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:27,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569580728] [2022-11-20 09:31:27,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:27,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:27,493 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:31:27,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21958722] [2022-11-20 09:31:27,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:31:27,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:27,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:27,495 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:27,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 09:31:27,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:31:27,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:31:27,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:31:27,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-20 09:31:27,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:27,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:27,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569580728] [2022-11-20 09:31:27,873 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:31:27,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21958722] [2022-11-20 09:31:27,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21958722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:27,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:27,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:31:27,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698350620] [2022-11-20 09:31:27,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:27,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:31:27,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:27,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:31:27,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:31:27,876 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 203 [2022-11-20 09:31:27,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 205 transitions, 553 flow. Second operand has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:27,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:27,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 203 [2022-11-20 09:31:27,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:28,061 INFO L130 PetriNetUnfolder]: 13/641 cut-off events. [2022-11-20 09:31:28,062 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-11-20 09:31:28,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 641 events. 13/641 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1261 event pairs, 0 based on Foata normal form. 0/607 useless extension candidates. Maximal degree in co-relation 557. Up to 50 conditions per place. [2022-11-20 09:31:28,065 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 29 selfloop transitions, 5 changer transitions 0/217 dead transitions. [2022-11-20 09:31:28,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 217 transitions, 645 flow [2022-11-20 09:31:28,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:31:28,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:31:28,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 905 transitions. [2022-11-20 09:31:28,069 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8916256157635468 [2022-11-20 09:31:28,069 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 905 transitions. [2022-11-20 09:31:28,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 905 transitions. [2022-11-20 09:31:28,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:28,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 905 transitions. [2022-11-20 09:31:28,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:28,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:28,075 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:28,075 INFO L175 Difference]: Start difference. First operand has 224 places, 205 transitions, 553 flow. Second operand 5 states and 905 transitions. [2022-11-20 09:31:28,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 217 transitions, 645 flow [2022-11-20 09:31:28,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 217 transitions, 586 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-20 09:31:28,081 INFO L231 Difference]: Finished difference. Result has 219 places, 208 transitions, 528 flow [2022-11-20 09:31:28,081 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=528, PETRI_PLACES=219, PETRI_TRANSITIONS=208} [2022-11-20 09:31:28,082 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 25 predicate places. [2022-11-20 09:31:28,082 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 208 transitions, 528 flow [2022-11-20 09:31:28,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:28,083 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:28,083 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] [2022-11-20 09:31:28,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:28,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:28,288 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:31:28,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:28,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1558187717, now seen corresponding path program 1 times [2022-11-20 09:31:28,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:28,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516943938] [2022-11-20 09:31:28,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:28,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:28,329 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:31:28,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1576966497] [2022-11-20 09:31:28,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:28,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:28,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:28,332 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:28,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 09:31:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:28,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:31:28,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:28,806 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:28,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:29,053 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:29,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:29,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516943938] [2022-11-20 09:31:29,068 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:31:29,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576966497] [2022-11-20 09:31:29,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576966497] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:29,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:31:29,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 09:31:29,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521911846] [2022-11-20 09:31:29,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:29,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:31:29,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:29,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:31:29,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:31:29,076 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-20 09:31:29,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 208 transitions, 528 flow. Second operand has 16 states, 16 states have (on average 180.6875) internal successors, (2891), 16 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:29,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:29,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-20 09:31:29,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:29,510 INFO L130 PetriNetUnfolder]: 7/753 cut-off events. [2022-11-20 09:31:29,511 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2022-11-20 09:31:29,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 753 events. 7/753 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 482 event pairs, 0 based on Foata normal form. 8/747 useless extension candidates. Maximal degree in co-relation 602. Up to 20 conditions per place. [2022-11-20 09:31:29,514 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 60 selfloop transitions, 22 changer transitions 0/261 dead transitions. [2022-11-20 09:31:29,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 261 transitions, 885 flow [2022-11-20 09:31:29,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 09:31:29,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 09:31:29,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3802 transitions. [2022-11-20 09:31:29,523 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8918601923528032 [2022-11-20 09:31:29,523 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3802 transitions. [2022-11-20 09:31:29,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3802 transitions. [2022-11-20 09:31:29,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:29,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3802 transitions. [2022-11-20 09:31:29,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 181.04761904761904) internal successors, (3802), 21 states have internal predecessors, (3802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:29,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 203.0) internal successors, (4466), 22 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:29,544 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 203.0) internal successors, (4466), 22 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:29,544 INFO L175 Difference]: Start difference. First operand has 219 places, 208 transitions, 528 flow. Second operand 21 states and 3802 transitions. [2022-11-20 09:31:29,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 261 transitions, 885 flow [2022-11-20 09:31:29,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 261 transitions, 875 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-20 09:31:29,550 INFO L231 Difference]: Finished difference. Result has 243 places, 217 transitions, 638 flow [2022-11-20 09:31:29,551 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=638, PETRI_PLACES=243, PETRI_TRANSITIONS=217} [2022-11-20 09:31:29,552 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 49 predicate places. [2022-11-20 09:31:29,552 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 217 transitions, 638 flow [2022-11-20 09:31:29,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 180.6875) internal successors, (2891), 16 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:29,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:29,554 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] [2022-11-20 09:31:29,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:29,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:29,772 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:31:29,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:29,773 INFO L85 PathProgramCache]: Analyzing trace with hash -701389125, now seen corresponding path program 2 times [2022-11-20 09:31:29,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:29,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996331256] [2022-11-20 09:31:29,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:29,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:29,844 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:31:29,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090496822] [2022-11-20 09:31:29,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:31:29,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:29,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:29,846 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:29,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 09:31:30,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:31:30,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:31:30,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:31:30,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:30,534 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-20 09:31:30,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:30,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:30,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996331256] [2022-11-20 09:31:30,535 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:31:30,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090496822] [2022-11-20 09:31:30,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090496822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:30,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:30,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:31:30,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905150511] [2022-11-20 09:31:30,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:30,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:31:30,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:30,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:31:30,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:31:30,541 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 203 [2022-11-20 09:31:30,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 217 transitions, 638 flow. Second operand has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:30,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:30,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 203 [2022-11-20 09:31:30,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:30,750 INFO L130 PetriNetUnfolder]: 7/751 cut-off events. [2022-11-20 09:31:30,750 INFO L131 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-11-20 09:31:30,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 751 events. 7/751 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 480 event pairs, 0 based on Foata normal form. 2/739 useless extension candidates. Maximal degree in co-relation 603. Up to 80 conditions per place. [2022-11-20 09:31:30,754 INFO L137 encePairwiseOnDemand]: 199/203 looper letters, 18 selfloop transitions, 5 changer transitions 0/215 dead transitions. [2022-11-20 09:31:30,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 215 transitions, 674 flow [2022-11-20 09:31:30,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:31:30,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:31:30,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 717 transitions. [2022-11-20 09:31:30,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8830049261083743 [2022-11-20 09:31:30,756 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 717 transitions. [2022-11-20 09:31:30,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 717 transitions. [2022-11-20 09:31:30,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:30,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 717 transitions. [2022-11-20 09:31:30,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:30,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:30,778 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:30,778 INFO L175 Difference]: Start difference. First operand has 243 places, 217 transitions, 638 flow. Second operand 4 states and 717 transitions. [2022-11-20 09:31:30,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 215 transitions, 674 flow [2022-11-20 09:31:30,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 215 transitions, 651 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-20 09:31:30,784 INFO L231 Difference]: Finished difference. Result has 234 places, 215 transitions, 615 flow [2022-11-20 09:31:30,785 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=615, PETRI_PLACES=234, PETRI_TRANSITIONS=215} [2022-11-20 09:31:30,786 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 40 predicate places. [2022-11-20 09:31:30,786 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 215 transitions, 615 flow [2022-11-20 09:31:30,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:30,787 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:30,787 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:30,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-20 09:31:30,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 09:31:30,993 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:31:30,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:30,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1660508075, now seen corresponding path program 1 times [2022-11-20 09:31:30,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:30,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083768534] [2022-11-20 09:31:30,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:30,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:31,094 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:31:31,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819038074] [2022-11-20 09:31:31,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:31,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:31,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:31,096 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:31,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 09:31:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:31,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 09:31:31,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:32,106 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:32,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:32,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:32,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083768534] [2022-11-20 09:31:32,783 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:31:32,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819038074] [2022-11-20 09:31:32,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819038074] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:32,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:31:32,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-20 09:31:32,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353849374] [2022-11-20 09:31:32,784 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:32,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 09:31:32,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:32,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 09:31:32,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-20 09:31:32,791 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-20 09:31:32,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 215 transitions, 615 flow. Second operand has 32 states, 32 states have (on average 181.125) internal successors, (5796), 32 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:32,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:32,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-20 09:31:32,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:34,077 INFO L130 PetriNetUnfolder]: 7/1423 cut-off events. [2022-11-20 09:31:34,077 INFO L131 PetriNetUnfolder]: For 725/725 co-relation queries the response was YES. [2022-11-20 09:31:34,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 1423 events. 7/1423 cut-off events. For 725/725 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 519 event pairs, 0 based on Foata normal form. 16/1425 useless extension candidates. Maximal degree in co-relation 1192. Up to 38 conditions per place. [2022-11-20 09:31:34,082 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 124 selfloop transitions, 46 changer transitions 0/347 dead transitions. [2022-11-20 09:31:34,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 347 transitions, 1551 flow [2022-11-20 09:31:34,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 09:31:34,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-20 09:31:34,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 8142 transitions. [2022-11-20 09:31:34,098 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8912972085385878 [2022-11-20 09:31:34,098 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 8142 transitions. [2022-11-20 09:31:34,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 8142 transitions. [2022-11-20 09:31:34,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:34,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 8142 transitions. [2022-11-20 09:31:34,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 180.93333333333334) internal successors, (8142), 45 states have internal predecessors, (8142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:34,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 203.0) internal successors, (9338), 46 states have internal predecessors, (9338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:34,139 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 203.0) internal successors, (9338), 46 states have internal predecessors, (9338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:34,139 INFO L175 Difference]: Start difference. First operand has 234 places, 215 transitions, 615 flow. Second operand 45 states and 8142 transitions. [2022-11-20 09:31:34,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 347 transitions, 1551 flow [2022-11-20 09:31:34,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 347 transitions, 1541 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 09:31:34,150 INFO L231 Difference]: Finished difference. Result has 284 places, 240 transitions, 928 flow [2022-11-20 09:31:34,152 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=928, PETRI_PLACES=284, PETRI_TRANSITIONS=240} [2022-11-20 09:31:34,152 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 90 predicate places. [2022-11-20 09:31:34,153 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 240 transitions, 928 flow [2022-11-20 09:31:34,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 181.125) internal successors, (5796), 32 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:34,154 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:34,155 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:34,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:34,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 09:31:34,363 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:31:34,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:34,363 INFO L85 PathProgramCache]: Analyzing trace with hash -2076259157, now seen corresponding path program 2 times [2022-11-20 09:31:34,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:34,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89258577] [2022-11-20 09:31:34,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:34,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:34,528 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:31:34,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [114137806] [2022-11-20 09:31:34,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:31:34,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:34,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:34,533 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:34,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 09:31:35,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:31:35,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:31:35,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:31:35,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4321 trivial. 0 not checked. [2022-11-20 09:31:35,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:35,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:35,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89258577] [2022-11-20 09:31:35,070 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:31:35,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114137806] [2022-11-20 09:31:35,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114137806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:35,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:35,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:31:35,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912569973] [2022-11-20 09:31:35,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:35,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:31:35,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:35,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:31:35,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:31:35,075 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-20 09:31:35,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 240 transitions, 928 flow. Second operand has 4 states, 4 states have (on average 179.5) internal successors, (718), 4 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:35,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:35,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-20 09:31:35,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:35,640 INFO L130 PetriNetUnfolder]: 23/1479 cut-off events. [2022-11-20 09:31:35,640 INFO L131 PetriNetUnfolder]: For 729/729 co-relation queries the response was YES. [2022-11-20 09:31:35,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2156 conditions, 1479 events. 23/1479 cut-off events. For 729/729 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 980 event pairs, 3 based on Foata normal form. 0/1459 useless extension candidates. Maximal degree in co-relation 1885. Up to 38 conditions per place. [2022-11-20 09:31:35,647 INFO L137 encePairwiseOnDemand]: 198/203 looper letters, 16 selfloop transitions, 4 changer transitions 0/242 dead transitions. [2022-11-20 09:31:35,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 242 transitions, 978 flow [2022-11-20 09:31:35,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:31:35,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:31:35,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 906 transitions. [2022-11-20 09:31:35,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8926108374384236 [2022-11-20 09:31:35,650 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 906 transitions. [2022-11-20 09:31:35,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 906 transitions. [2022-11-20 09:31:35,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:35,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 906 transitions. [2022-11-20 09:31:35,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:35,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:35,654 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:35,654 INFO L175 Difference]: Start difference. First operand has 284 places, 240 transitions, 928 flow. Second operand 5 states and 906 transitions. [2022-11-20 09:31:35,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 242 transitions, 978 flow [2022-11-20 09:31:35,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 242 transitions, 921 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-20 09:31:35,665 INFO L231 Difference]: Finished difference. Result has 269 places, 239 transitions, 877 flow [2022-11-20 09:31:35,666 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=877, PETRI_PLACES=269, PETRI_TRANSITIONS=239} [2022-11-20 09:31:35,666 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 75 predicate places. [2022-11-20 09:31:35,666 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 239 transitions, 877 flow [2022-11-20 09:31:35,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.5) internal successors, (718), 4 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:35,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:35,667 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:35,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-20 09:31:35,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 09:31:35,875 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:31:35,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:35,876 INFO L85 PathProgramCache]: Analyzing trace with hash -2076228372, now seen corresponding path program 1 times [2022-11-20 09:31:35,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:35,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082949068] [2022-11-20 09:31:35,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:35,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:36,019 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:31:36,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1978499136] [2022-11-20 09:31:36,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:36,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:36,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:36,021 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:36,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 09:31:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:36,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 09:31:36,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:38,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:39,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:39,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082949068] [2022-11-20 09:31:39,988 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:31:39,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978499136] [2022-11-20 09:31:39,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978499136] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:39,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:31:39,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-20 09:31:39,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056477453] [2022-11-20 09:31:39,989 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:39,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-20 09:31:39,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:39,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-20 09:31:39,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-20 09:31:40,001 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-20 09:31:40,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 239 transitions, 877 flow. Second operand has 61 states, 61 states have (on average 181.37704918032787) internal successors, (11064), 61 states have internal predecessors, (11064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:40,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:40,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-20 09:31:40,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:43,912 INFO L130 PetriNetUnfolder]: 7/2682 cut-off events. [2022-11-20 09:31:43,912 INFO L131 PetriNetUnfolder]: For 4943/4943 co-relation queries the response was YES. [2022-11-20 09:31:43,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4441 conditions, 2682 events. 7/2682 cut-off events. For 4943/4943 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 584 event pairs, 0 based on Foata normal form. 30/2700 useless extension candidates. Maximal degree in co-relation 4381. Up to 96 conditions per place. [2022-11-20 09:31:43,919 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 244 selfloop transitions, 91 changer transitions 0/511 dead transitions. [2022-11-20 09:31:43,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 511 transitions, 2959 flow [2022-11-20 09:31:43,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-20 09:31:43,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-20 09:31:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 16279 transitions. [2022-11-20 09:31:43,937 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.891023535851122 [2022-11-20 09:31:43,938 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 16279 transitions. [2022-11-20 09:31:43,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 16279 transitions. [2022-11-20 09:31:43,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:43,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 16279 transitions. [2022-11-20 09:31:43,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 180.87777777777777) internal successors, (16279), 90 states have internal predecessors, (16279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:43,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 203.0) internal successors, (18473), 91 states have internal predecessors, (18473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:43,995 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 203.0) internal successors, (18473), 91 states have internal predecessors, (18473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:43,996 INFO L175 Difference]: Start difference. First operand has 269 places, 239 transitions, 877 flow. Second operand 90 states and 16279 transitions. [2022-11-20 09:31:43,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 511 transitions, 2959 flow [2022-11-20 09:31:44,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 511 transitions, 2951 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:31:44,015 INFO L231 Difference]: Finished difference. Result has 370 places, 285 transitions, 1558 flow [2022-11-20 09:31:44,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1558, PETRI_PLACES=370, PETRI_TRANSITIONS=285} [2022-11-20 09:31:44,016 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 176 predicate places. [2022-11-20 09:31:44,017 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 285 transitions, 1558 flow [2022-11-20 09:31:44,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 181.37704918032787) internal successors, (11064), 61 states have internal predecessors, (11064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:44,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:44,020 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:44,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:44,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:44,236 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:31:44,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:44,237 INFO L85 PathProgramCache]: Analyzing trace with hash 567278534, now seen corresponding path program 2 times [2022-11-20 09:31:44,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:44,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516571106] [2022-11-20 09:31:44,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:44,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:44,528 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:31:44,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895341470] [2022-11-20 09:31:44,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:31:44,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:44,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:44,530 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:44,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 09:31:46,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:31:46,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:31:46,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 5188 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:31:46,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:47,880 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-20 09:31:47,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:49,787 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-20 09:31:49,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:49,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516571106] [2022-11-20 09:31:49,788 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:31:49,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895341470] [2022-11-20 09:31:49,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895341470] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:49,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:31:49,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 09:31:49,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454230191] [2022-11-20 09:31:49,789 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:49,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:31:49,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:49,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:31:49,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:31:49,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 203 [2022-11-20 09:31:49,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 285 transitions, 1558 flow. Second operand has 8 states, 8 states have (on average 177.75) internal successors, (1422), 8 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:49,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:49,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 203 [2022-11-20 09:31:49,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:52,697 INFO L130 PetriNetUnfolder]: 8/3988 cut-off events. [2022-11-20 09:31:52,698 INFO L131 PetriNetUnfolder]: For 4582/4582 co-relation queries the response was YES. [2022-11-20 09:31:52,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6689 conditions, 3988 events. 8/3988 cut-off events. For 4582/4582 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 530 event pairs, 0 based on Foata normal form. 3/3978 useless extension candidates. Maximal degree in co-relation 4615. Up to 187 conditions per place. [2022-11-20 09:31:52,708 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 38 selfloop transitions, 9 changer transitions 0/309 dead transitions. [2022-11-20 09:31:52,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 309 transitions, 1714 flow [2022-11-20 09:31:52,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:31:52,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 09:31:52,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1616 transitions. [2022-11-20 09:31:52,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8845101258894362 [2022-11-20 09:31:52,711 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1616 transitions. [2022-11-20 09:31:52,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1616 transitions. [2022-11-20 09:31:52,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:52,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1616 transitions. [2022-11-20 09:31:52,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 179.55555555555554) internal successors, (1616), 9 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:52,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:52,717 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:52,717 INFO L175 Difference]: Start difference. First operand has 370 places, 285 transitions, 1558 flow. Second operand 9 states and 1616 transitions. [2022-11-20 09:31:52,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 309 transitions, 1714 flow [2022-11-20 09:31:52,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 309 transitions, 1595 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-20 09:31:52,754 INFO L231 Difference]: Finished difference. Result has 341 places, 289 transitions, 1495 flow [2022-11-20 09:31:52,755 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1495, PETRI_PLACES=341, PETRI_TRANSITIONS=289} [2022-11-20 09:31:52,755 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 147 predicate places. [2022-11-20 09:31:52,756 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 289 transitions, 1495 flow [2022-11-20 09:31:52,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 177.75) internal successors, (1422), 8 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:52,756 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:52,757 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] [2022-11-20 09:31:52,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:52,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:52,971 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:31:52,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:52,972 INFO L85 PathProgramCache]: Analyzing trace with hash -376950072, now seen corresponding path program 1 times [2022-11-20 09:31:52,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:52,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688571025] [2022-11-20 09:31:52,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:52,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:53,226 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:31:53,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039707228] [2022-11-20 09:31:53,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:53,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:53,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:53,228 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:53,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 09:31:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:59,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 5325 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 09:31:59,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:01,436 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-20 09:32:01,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-20 09:32:03,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:03,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688571025] [2022-11-20 09:32:03,766 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:03,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039707228] [2022-11-20 09:32:03,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039707228] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:03,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:03,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 09:32:03,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325640018] [2022-11-20 09:32:03,768 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:03,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 09:32:03,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:03,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 09:32:03,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:32:03,773 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 203 [2022-11-20 09:32:03,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 289 transitions, 1495 flow. Second operand has 14 states, 14 states have (on average 169.35714285714286) internal successors, (2371), 14 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:03,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:03,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 203 [2022-11-20 09:32:03,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:07,135 INFO L130 PetriNetUnfolder]: 8/3956 cut-off events. [2022-11-20 09:32:07,135 INFO L131 PetriNetUnfolder]: For 4795/4795 co-relation queries the response was YES. [2022-11-20 09:32:07,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6961 conditions, 3956 events. 8/3956 cut-off events. For 4795/4795 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 324 event pairs, 0 based on Foata normal form. 32/3975 useless extension candidates. Maximal degree in co-relation 4756. Up to 307 conditions per place. [2022-11-20 09:32:07,144 INFO L137 encePairwiseOnDemand]: 189/203 looper letters, 224 selfloop transitions, 144 changer transitions 0/529 dead transitions. [2022-11-20 09:32:07,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 529 transitions, 4355 flow [2022-11-20 09:32:07,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 09:32:07,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 09:32:07,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4039 transitions. [2022-11-20 09:32:07,148 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8290229885057471 [2022-11-20 09:32:07,149 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4039 transitions. [2022-11-20 09:32:07,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4039 transitions. [2022-11-20 09:32:07,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:07,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4039 transitions. [2022-11-20 09:32:07,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 168.29166666666666) internal successors, (4039), 24 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:07,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 203.0) internal successors, (5075), 25 states have internal predecessors, (5075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:07,159 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 203.0) internal successors, (5075), 25 states have internal predecessors, (5075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:07,159 INFO L175 Difference]: Start difference. First operand has 341 places, 289 transitions, 1495 flow. Second operand 24 states and 4039 transitions. [2022-11-20 09:32:07,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 529 transitions, 4355 flow [2022-11-20 09:32:07,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 529 transitions, 4339 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-20 09:32:07,199 INFO L231 Difference]: Finished difference. Result has 365 places, 420 transitions, 3534 flow [2022-11-20 09:32:07,199 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3534, PETRI_PLACES=365, PETRI_TRANSITIONS=420} [2022-11-20 09:32:07,200 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 171 predicate places. [2022-11-20 09:32:07,200 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 420 transitions, 3534 flow [2022-11-20 09:32:07,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 169.35714285714286) internal successors, (2371), 14 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:07,201 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:07,202 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] [2022-11-20 09:32:07,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:07,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 09:32:07,415 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:32:07,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:07,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1064525364, now seen corresponding path program 1 times [2022-11-20 09:32:07,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:07,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446437579] [2022-11-20 09:32:07,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:07,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:07,630 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:07,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1963788441] [2022-11-20 09:32:07,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:07,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:07,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:07,632 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:07,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 09:32:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:14,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 5493 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 09:32:14,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:16,771 INFO L134 CoverageAnalysis]: Checked inductivity of 20475 backedges. 2610 proven. 0 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-20 09:32:16,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:16,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:16,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446437579] [2022-11-20 09:32:16,772 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:16,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963788441] [2022-11-20 09:32:16,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963788441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:16,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:16,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:32:16,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917047766] [2022-11-20 09:32:16,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:16,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:32:16,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:16,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:32:16,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:32:16,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 203 [2022-11-20 09:32:16,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 420 transitions, 3534 flow. Second operand has 11 states, 11 states have (on average 168.45454545454547) internal successors, (1853), 11 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:16,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:16,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 203 [2022-11-20 09:32:16,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:19,988 INFO L130 PetriNetUnfolder]: 8/3899 cut-off events. [2022-11-20 09:32:19,989 INFO L131 PetriNetUnfolder]: For 7134/7134 co-relation queries the response was YES. [2022-11-20 09:32:19,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7433 conditions, 3899 events. 8/3899 cut-off events. For 7134/7134 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 296 event pairs, 0 based on Foata normal form. 57/3943 useless extension candidates. Maximal degree in co-relation 4931. Up to 370 conditions per place. [2022-11-20 09:32:19,999 INFO L137 encePairwiseOnDemand]: 193/203 looper letters, 208 selfloop transitions, 139 changer transitions 0/508 dead transitions. [2022-11-20 09:32:20,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 508 transitions, 5010 flow [2022-11-20 09:32:20,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 09:32:20,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 09:32:20,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2526 transitions. [2022-11-20 09:32:20,003 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8295566502463054 [2022-11-20 09:32:20,003 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2526 transitions. [2022-11-20 09:32:20,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2526 transitions. [2022-11-20 09:32:20,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:20,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2526 transitions. [2022-11-20 09:32:20,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 168.4) internal successors, (2526), 15 states have internal predecessors, (2526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:20,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:20,011 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:20,011 INFO L175 Difference]: Start difference. First operand has 365 places, 420 transitions, 3534 flow. Second operand 15 states and 2526 transitions. [2022-11-20 09:32:20,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 508 transitions, 5010 flow [2022-11-20 09:32:20,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 508 transitions, 4978 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-11-20 09:32:20,056 INFO L231 Difference]: Finished difference. Result has 372 places, 477 transitions, 4713 flow [2022-11-20 09:32:20,057 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=3483, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4713, PETRI_PLACES=372, PETRI_TRANSITIONS=477} [2022-11-20 09:32:20,058 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 178 predicate places. [2022-11-20 09:32:20,058 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 477 transitions, 4713 flow [2022-11-20 09:32:20,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 168.45454545454547) internal successors, (1853), 11 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:20,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:20,059 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] [2022-11-20 09:32:20,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-20 09:32:20,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 09:32:20,260 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:32:20,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:20,260 INFO L85 PathProgramCache]: Analyzing trace with hash -122160299, now seen corresponding path program 2 times [2022-11-20 09:32:20,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:20,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503307085] [2022-11-20 09:32:20,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:20,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:20,630 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:20,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540108513] [2022-11-20 09:32:20,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:32:20,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:20,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:20,635 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:20,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 09:33:15,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:33:15,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:33:15,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 10552 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:33:15,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 77817 backedges. 42044 proven. 0 refuted. 0 times theorem prover too weak. 35773 trivial. 0 not checked. [2022-11-20 09:33:19,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:33:19,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:19,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503307085] [2022-11-20 09:33:19,466 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:33:19,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540108513] [2022-11-20 09:33:19,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540108513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:19,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:33:19,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:33:19,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546203790] [2022-11-20 09:33:19,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:19,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:33:19,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:19,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:33:19,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:33:19,471 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 203 [2022-11-20 09:33:19,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 477 transitions, 4713 flow. Second operand has 9 states, 9 states have (on average 174.44444444444446) internal successors, (1570), 9 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:19,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:19,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 203 [2022-11-20 09:33:19,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:23,592 INFO L130 PetriNetUnfolder]: 8/3871 cut-off events. [2022-11-20 09:33:23,592 INFO L131 PetriNetUnfolder]: For 9582/9582 co-relation queries the response was YES. [2022-11-20 09:33:23,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7272 conditions, 3871 events. 8/3871 cut-off events. For 9582/9582 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 241 event pairs, 0 based on Foata normal form. 28/3886 useless extension candidates. Maximal degree in co-relation 4817. Up to 217 conditions per place. [2022-11-20 09:33:23,600 INFO L137 encePairwiseOnDemand]: 194/203 looper letters, 200 selfloop transitions, 49 changer transitions 0/502 dead transitions. [2022-11-20 09:33:23,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 502 transitions, 5456 flow [2022-11-20 09:33:23,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 09:33:23,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 09:33:23,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2085 transitions. [2022-11-20 09:33:23,603 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8559113300492611 [2022-11-20 09:33:23,603 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2085 transitions. [2022-11-20 09:33:23,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2085 transitions. [2022-11-20 09:33:23,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:23,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2085 transitions. [2022-11-20 09:33:23,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 173.75) internal successors, (2085), 12 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:23,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 203.0) internal successors, (2639), 13 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:23,609 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 203.0) internal successors, (2639), 13 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:23,609 INFO L175 Difference]: Start difference. First operand has 372 places, 477 transitions, 4713 flow. Second operand 12 states and 2085 transitions. [2022-11-20 09:33:23,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 502 transitions, 5456 flow [2022-11-20 09:33:23,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 502 transitions, 5280 flow, removed 59 selfloop flow, removed 9 redundant places. [2022-11-20 09:33:23,649 INFO L231 Difference]: Finished difference. Result has 374 places, 482 transitions, 4760 flow [2022-11-20 09:33:23,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=4525, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4760, PETRI_PLACES=374, PETRI_TRANSITIONS=482} [2022-11-20 09:33:23,651 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 180 predicate places. [2022-11-20 09:33:23,651 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 482 transitions, 4760 flow [2022-11-20 09:33:23,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 174.44444444444446) internal successors, (1570), 9 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:23,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:23,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:23,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:23,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 09:33:23,863 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:33:23,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:23,864 INFO L85 PathProgramCache]: Analyzing trace with hash -754395284, now seen corresponding path program 3 times [2022-11-20 09:33:23,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:23,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142635682] [2022-11-20 09:33:23,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:23,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:24,353 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:33:24,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490156260] [2022-11-20 09:33:24,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:33:24,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:24,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:33:24,363 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:33:24,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 09:33:30,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 09:33:30,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:33:30,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:33:30,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:36,323 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-20 09:33:36,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:43,937 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-20 09:33:43,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:43,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142635682] [2022-11-20 09:33:43,938 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:33:43,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490156260] [2022-11-20 09:33:43,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490156260] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:33:43,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:33:43,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 09:33:43,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587671779] [2022-11-20 09:33:43,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:33:43,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:33:43,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:43,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:33:43,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:33:43,947 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 203 [2022-11-20 09:33:43,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 482 transitions, 4760 flow. Second operand has 16 states, 16 states have (on average 178.875) internal successors, (2862), 16 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:43,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:43,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 203 [2022-11-20 09:33:43,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:58,129 INFO L130 PetriNetUnfolder]: 12/8859 cut-off events. [2022-11-20 09:33:58,129 INFO L131 PetriNetUnfolder]: For 21629/21629 co-relation queries the response was YES. [2022-11-20 09:33:58,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16471 conditions, 8859 events. 12/8859 cut-off events. For 21629/21629 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 244 event pairs, 0 based on Foata normal form. 4/8850 useless extension candidates. Maximal degree in co-relation 14137. Up to 336 conditions per place. [2022-11-20 09:33:58,148 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 74 selfloop transitions, 21 changer transitions 0/550 dead transitions. [2022-11-20 09:33:58,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 550 transitions, 5250 flow [2022-11-20 09:33:58,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 09:33:58,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 09:33:58,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3748 transitions. [2022-11-20 09:33:58,156 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.879193056532958 [2022-11-20 09:33:58,156 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3748 transitions. [2022-11-20 09:33:58,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3748 transitions. [2022-11-20 09:33:58,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:58,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3748 transitions. [2022-11-20 09:33:58,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 178.47619047619048) internal successors, (3748), 21 states have internal predecessors, (3748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:58,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 203.0) internal successors, (4466), 22 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:58,177 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 203.0) internal successors, (4466), 22 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:58,177 INFO L175 Difference]: Start difference. First operand has 374 places, 482 transitions, 4760 flow. Second operand 21 states and 3748 transitions. [2022-11-20 09:33:58,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 550 transitions, 5250 flow [2022-11-20 09:33:58,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 550 transitions, 5193 flow, removed 6 selfloop flow, removed 9 redundant places. [2022-11-20 09:33:58,255 INFO L231 Difference]: Finished difference. Result has 390 places, 495 transitions, 4901 flow [2022-11-20 09:33:58,256 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=4727, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4901, PETRI_PLACES=390, PETRI_TRANSITIONS=495} [2022-11-20 09:33:58,257 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 196 predicate places. [2022-11-20 09:33:58,257 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 495 transitions, 4901 flow [2022-11-20 09:33:58,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 178.875) internal successors, (2862), 16 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:58,257 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:58,260 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:58,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:58,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 09:33:58,477 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:33:58,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:58,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1575393352, now seen corresponding path program 4 times [2022-11-20 09:33:58,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:58,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229394852] [2022-11-20 09:33:58,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:58,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:59,598 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:33:59,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595394786] [2022-11-20 09:33:59,599 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 09:33:59,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:59,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:33:59,605 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:33:59,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 09:34:09,823 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 09:34:09,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:34:09,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 31914 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 09:34:10,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:23,451 INFO L134 CoverageAnalysis]: Checked inductivity of 901558 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125055 trivial. 0 not checked. [2022-11-20 09:34:23,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:37,139 INFO L134 CoverageAnalysis]: Checked inductivity of 901558 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125055 trivial. 0 not checked. [2022-11-20 09:34:37,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:37,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229394852] [2022-11-20 09:34:37,140 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:34:37,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595394786] [2022-11-20 09:34:37,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595394786] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:34:37,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:34:37,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2022-11-20 09:34:37,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181357913] [2022-11-20 09:34:37,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:34:37,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 09:34:37,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:37,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 09:34:37,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-20 09:34:37,156 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 203 [2022-11-20 09:34:37,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 495 transitions, 4901 flow. Second operand has 21 states, 21 states have (on average 179.42857142857142) internal successors, (3768), 21 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:37,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:34:37,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 203 [2022-11-20 09:34:37,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:35:06,431 INFO L130 PetriNetUnfolder]: 15/12600 cut-off events. [2022-11-20 09:35:06,431 INFO L131 PetriNetUnfolder]: For 30280/30280 co-relation queries the response was YES. [2022-11-20 09:35:06,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23339 conditions, 12600 events. 15/12600 cut-off events. For 30280/30280 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 247 event pairs, 0 based on Foata normal form. 3/12590 useless extension candidates. Maximal degree in co-relation 20996. Up to 480 conditions per place. [2022-11-20 09:35:06,468 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 104 selfloop transitions, 30 changer transitions 0/589 dead transitions. [2022-11-20 09:35:06,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 589 transitions, 5561 flow [2022-11-20 09:35:06,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 09:35:06,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 09:35:06,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5349 transitions. [2022-11-20 09:35:06,474 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8783251231527094 [2022-11-20 09:35:06,474 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5349 transitions. [2022-11-20 09:35:06,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5349 transitions. [2022-11-20 09:35:06,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:35:06,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5349 transitions. [2022-11-20 09:35:06,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 178.3) internal successors, (5349), 30 states have internal predecessors, (5349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:06,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 203.0) internal successors, (6293), 31 states have internal predecessors, (6293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:06,490 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 203.0) internal successors, (6293), 31 states have internal predecessors, (6293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:06,490 INFO L175 Difference]: Start difference. First operand has 390 places, 495 transitions, 4901 flow. Second operand 30 states and 5349 transitions. [2022-11-20 09:35:06,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 589 transitions, 5561 flow [2022-11-20 09:35:06,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 589 transitions, 5531 flow, removed 8 selfloop flow, removed 7 redundant places. [2022-11-20 09:35:06,597 INFO L231 Difference]: Finished difference. Result has 416 places, 505 transitions, 5064 flow [2022-11-20 09:35:06,598 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=4877, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5064, PETRI_PLACES=416, PETRI_TRANSITIONS=505} [2022-11-20 09:35:06,599 INFO L288 CegarLoopForPetriNet]: 194 programPoint places, 222 predicate places. [2022-11-20 09:35:06,599 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 505 transitions, 5064 flow [2022-11-20 09:35:06,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 179.42857142857142) internal successors, (3768), 21 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:06,600 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:35:06,603 INFO L209 CegarLoopForPetriNet]: trace histogram [300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:06,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:06,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 09:35:06,819 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 09:35:06,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:06,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1595849169, now seen corresponding path program 5 times [2022-11-20 09:35:06,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:06,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35314756] [2022-11-20 09:35:06,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:06,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:08,496 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:35:08,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [954633917] [2022-11-20 09:35:08,497 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 09:35:08,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:08,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:08,503 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:35:08,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8bd6cd-b7ad-471d-aeb0-1b85ded9a881/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process