./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:15:00,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:15:00,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:15:00,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:15:00,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:15:00,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:15:00,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:15:00,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:15:00,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:15:00,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:15:00,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:15:00,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:15:00,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:15:00,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:15:00,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:15:00,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:15:00,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:15:00,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:15:00,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:15:00,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:15:00,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:15:00,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:15:00,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:15:00,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:15:00,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:15:00,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:15:00,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:15:00,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:15:00,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:15:00,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:15:00,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:15:00,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:15:00,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:15:00,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:15:00,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:15:00,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:15:00,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:15:00,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:15:00,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:15:00,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:15:00,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:15:00,686 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:15:00,734 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:15:00,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:15:00,736 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:15:00,736 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:15:00,737 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:15:00,738 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:15:00,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:15:00,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:15:00,739 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:15:00,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:15:00,741 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:15:00,741 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:15:00,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:15:00,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:15:00,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:15:00,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:15:00,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:15:00,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:15:00,743 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:15:00,743 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:15:00,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:15:00,744 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:15:00,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:15:00,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:15:00,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:15:00,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:15:00,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:15:00,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:15:00,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:15:00,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:15:00,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:15:00,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:15:00,748 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:15:00,748 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:15:00,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:15:00,748 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_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a [2022-11-21 16:15:01,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:15:01,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:15:01,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:15:01,124 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:15:01,124 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:15:01,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2022-11-21 16:15:04,252 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:15:04,704 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:15:04,704 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2022-11-21 16:15:04,722 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/data/e23a1ec11/32f6da76581e4e5b927bc04a37441289/FLAGbe0e5b03d [2022-11-21 16:15:04,744 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/data/e23a1ec11/32f6da76581e4e5b927bc04a37441289 [2022-11-21 16:15:04,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:15:04,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:15:04,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:15:04,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:15:04,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:15:04,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:15:04" (1/1) ... [2022-11-21 16:15:04,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e9ae42b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:04, skipping insertion in model container [2022-11-21 16:15:04,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:15:04" (1/1) ... [2022-11-21 16:15:04,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:15:04,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:15:05,434 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 16:15:05,434 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 16:15:05,437 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 16:15:05,441 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 16:15:05,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:15:05,530 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:15:05,581 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 16:15:05,581 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 16:15:05,582 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 16:15:05,583 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-21 16:15:05,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:15:05,664 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:15:05,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:05 WrapperNode [2022-11-21 16:15:05,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:15:05,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:15:05,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:15:05,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:15:05,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:05" (1/1) ... [2022-11-21 16:15:05,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:05" (1/1) ... [2022-11-21 16:15:05,781 INFO L138 Inliner]: procedures = 273, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 166 [2022-11-21 16:15:05,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:15:05,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:15:05,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:15:05,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:15:05,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:05" (1/1) ... [2022-11-21 16:15:05,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:05" (1/1) ... [2022-11-21 16:15:05,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:05" (1/1) ... [2022-11-21 16:15:05,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:05" (1/1) ... [2022-11-21 16:15:05,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:05" (1/1) ... [2022-11-21 16:15:05,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:05" (1/1) ... [2022-11-21 16:15:05,821 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:05" (1/1) ... [2022-11-21 16:15:05,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:05" (1/1) ... [2022-11-21 16:15:05,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:15:05,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:15:05,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:15:05,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:15:05,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:05" (1/1) ... [2022-11-21 16:15:05,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:15:05,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:15:05,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:15:05,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:15:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-21 16:15:05,925 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-21 16:15:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:15:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 16:15:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:15:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:15:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:15:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-21 16:15:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:15:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:15:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 16:15:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:15:05,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:15:05,930 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:15:06,177 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:15:06,180 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:15:06,740 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:15:06,764 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:15:06,765 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-21 16:15:06,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:15:06 BoogieIcfgContainer [2022-11-21 16:15:06,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:15:06,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:15:06,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:15:06,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:15:06,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:15:04" (1/3) ... [2022-11-21 16:15:06,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676ca49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:15:06, skipping insertion in model container [2022-11-21 16:15:06,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:15:05" (2/3) ... [2022-11-21 16:15:06,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676ca49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:15:06, skipping insertion in model container [2022-11-21 16:15:06,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:15:06" (3/3) ... [2022-11-21 16:15:06,777 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2022-11-21 16:15:06,786 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:15:06,798 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:15:06,798 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-21 16:15:06,798 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:15:06,911 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 16:15:06,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 259 transitions, 528 flow [2022-11-21 16:15:07,062 INFO L130 PetriNetUnfolder]: 17/257 cut-off events. [2022-11-21 16:15:07,062 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:15:07,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 257 events. 17/257 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 580 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 198. Up to 2 conditions per place. [2022-11-21 16:15:07,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 259 transitions, 528 flow [2022-11-21 16:15:07,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 257 transitions, 520 flow [2022-11-21 16:15:07,093 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:15:07,100 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;@77bab6aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:15:07,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-21 16:15:07,114 INFO L130 PetriNetUnfolder]: 2/55 cut-off events. [2022-11-21 16:15:07,114 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:15:07,114 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:15:07,115 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] [2022-11-21 16:15:07,116 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)] === [2022-11-21 16:15:07,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:15:07,122 INFO L85 PathProgramCache]: Analyzing trace with hash -784437459, now seen corresponding path program 1 times [2022-11-21 16:15:07,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:15:07,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073635965] [2022-11-21 16:15:07,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:07,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:15:07,328 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:15:07,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238865384] [2022-11-21 16:15:07,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:07,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:07,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:15:07,335 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:15:07,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:15:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:07,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 16:15:07,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:15:07,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:15:07,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:15:07,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:15:07,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073635965] [2022-11-21 16:15:07,627 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:15:07,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238865384] [2022-11-21 16:15:07,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238865384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:15:07,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:15:07,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:15:07,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896829199] [2022-11-21 16:15:07,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:15:07,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:15:07,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:15:07,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:15:07,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:15:07,706 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 259 [2022-11-21 16:15:07,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 257 transitions, 520 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:07,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:15:07,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 259 [2022-11-21 16:15:07,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:15:07,919 INFO L130 PetriNetUnfolder]: 8/307 cut-off events. [2022-11-21 16:15:07,920 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:15:07,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 307 events. 8/307 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 792 event pairs, 0 based on Foata normal form. 10/287 useless extension candidates. Maximal degree in co-relation 275. Up to 17 conditions per place. [2022-11-21 16:15:07,927 INFO L137 encePairwiseOnDemand]: 244/259 looper letters, 23 selfloop transitions, 2 changer transitions 2/256 dead transitions. [2022-11-21 16:15:07,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 256 transitions, 568 flow [2022-11-21 16:15:07,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:15:07,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:15:07,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 739 transitions. [2022-11-21 16:15:07,955 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9510939510939511 [2022-11-21 16:15:07,955 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 739 transitions. [2022-11-21 16:15:07,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 739 transitions. [2022-11-21 16:15:07,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:15:07,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 739 transitions. [2022-11-21 16:15:07,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.33333333333334) internal successors, (739), 3 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:07,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:07,981 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:07,983 INFO L175 Difference]: Start difference. First operand has 247 places, 257 transitions, 520 flow. Second operand 3 states and 739 transitions. [2022-11-21 16:15:07,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 256 transitions, 568 flow [2022-11-21 16:15:08,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 256 transitions, 566 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:15:08,010 INFO L231 Difference]: Finished difference. Result has 248 places, 246 transitions, 510 flow [2022-11-21 16:15:08,013 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=510, PETRI_PLACES=248, PETRI_TRANSITIONS=246} [2022-11-21 16:15:08,020 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 1 predicate places. [2022-11-21 16:15:08,021 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 246 transitions, 510 flow [2022-11-21 16:15:08,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:08,027 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:15:08,027 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] [2022-11-21 16:15:08,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 16:15:08,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:08,233 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)] === [2022-11-21 16:15:08,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:15:08,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1452242165, now seen corresponding path program 1 times [2022-11-21 16:15:08,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:15:08,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297571947] [2022-11-21 16:15:08,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:08,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:15:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:08,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:15:08,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:15:08,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297571947] [2022-11-21 16:15:08,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297571947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:15:08,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:15:08,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:15:08,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665116540] [2022-11-21 16:15:08,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:15:08,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:15:08,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:15:08,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:15:08,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:15:08,488 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 259 [2022-11-21 16:15:08,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 246 transitions, 510 flow. Second operand has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:08,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:15:08,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 259 [2022-11-21 16:15:08,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:15:08,599 INFO L130 PetriNetUnfolder]: 8/389 cut-off events. [2022-11-21 16:15:08,599 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-21 16:15:08,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 389 events. 8/389 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 867 event pairs, 0 based on Foata normal form. 2/362 useless extension candidates. Maximal degree in co-relation 294. Up to 22 conditions per place. [2022-11-21 16:15:08,604 INFO L137 encePairwiseOnDemand]: 254/259 looper letters, 17 selfloop transitions, 2 changer transitions 0/252 dead transitions. [2022-11-21 16:15:08,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 252 transitions, 560 flow [2022-11-21 16:15:08,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:15:08,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:15:08,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 730 transitions. [2022-11-21 16:15:08,608 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9395109395109396 [2022-11-21 16:15:08,608 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 730 transitions. [2022-11-21 16:15:08,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 730 transitions. [2022-11-21 16:15:08,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:15:08,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 730 transitions. [2022-11-21 16:15:08,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:08,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:08,616 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:08,617 INFO L175 Difference]: Start difference. First operand has 248 places, 246 transitions, 510 flow. Second operand 3 states and 730 transitions. [2022-11-21 16:15:08,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 252 transitions, 560 flow [2022-11-21 16:15:08,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 252 transitions, 558 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:15:08,628 INFO L231 Difference]: Finished difference. Result has 248 places, 247 transitions, 524 flow [2022-11-21 16:15:08,628 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=524, PETRI_PLACES=248, PETRI_TRANSITIONS=247} [2022-11-21 16:15:08,629 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 1 predicate places. [2022-11-21 16:15:08,630 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 247 transitions, 524 flow [2022-11-21 16:15:08,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:08,631 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:15:08,631 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] [2022-11-21 16:15:08,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:15:08,632 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)] === [2022-11-21 16:15:08,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:15:08,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1781092602, now seen corresponding path program 1 times [2022-11-21 16:15:08,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:15:08,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817235561] [2022-11-21 16:15:08,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:08,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:15:08,691 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:15:08,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886707419] [2022-11-21 16:15:08,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:08,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:08,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:15:08,694 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:15:08,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:15:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:08,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 16:15:08,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:15:08,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:15:08,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:15:08,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:15:08,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817235561] [2022-11-21 16:15:08,980 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:15:08,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886707419] [2022-11-21 16:15:08,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886707419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:15:08,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:15:08,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:15:08,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550634090] [2022-11-21 16:15:08,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:15:08,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:15:08,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:15:08,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:15:08,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:15:08,984 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-21 16:15:08,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 247 transitions, 524 flow. Second operand has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:08,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:15:08,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-21 16:15:08,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:15:09,098 INFO L130 PetriNetUnfolder]: 8/389 cut-off events. [2022-11-21 16:15:09,098 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-21 16:15:09,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 389 events. 8/389 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 864 event pairs, 0 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 247. Up to 30 conditions per place. [2022-11-21 16:15:09,101 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 23 selfloop transitions, 5 changer transitions 0/256 dead transitions. [2022-11-21 16:15:09,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 256 transitions, 598 flow [2022-11-21 16:15:09,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:15:09,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:15:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1184 transitions. [2022-11-21 16:15:09,104 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9142857142857143 [2022-11-21 16:15:09,105 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1184 transitions. [2022-11-21 16:15:09,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1184 transitions. [2022-11-21 16:15:09,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:15:09,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1184 transitions. [2022-11-21 16:15:09,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 236.8) internal successors, (1184), 5 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:09,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:09,113 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:09,113 INFO L175 Difference]: Start difference. First operand has 248 places, 247 transitions, 524 flow. Second operand 5 states and 1184 transitions. [2022-11-21 16:15:09,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 256 transitions, 598 flow [2022-11-21 16:15:09,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 256 transitions, 596 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:15:09,119 INFO L231 Difference]: Finished difference. Result has 255 places, 250 transitions, 556 flow [2022-11-21 16:15:09,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=556, PETRI_PLACES=255, PETRI_TRANSITIONS=250} [2022-11-21 16:15:09,121 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 8 predicate places. [2022-11-21 16:15:09,121 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 250 transitions, 556 flow [2022-11-21 16:15:09,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:09,122 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:15:09,122 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:15:09,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:15:09,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:09,328 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)] === [2022-11-21 16:15:09,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:15:09,329 INFO L85 PathProgramCache]: Analyzing trace with hash 620704563, now seen corresponding path program 1 times [2022-11-21 16:15:09,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:15:09,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009336887] [2022-11-21 16:15:09,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:09,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:15:09,371 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:15:09,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1108163477] [2022-11-21 16:15:09,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:09,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:09,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:15:09,377 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:15:09,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:15:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:09,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 16:15:09,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:15:09,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:15:09,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:15:09,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:15:09,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009336887] [2022-11-21 16:15:09,654 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:15:09,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108163477] [2022-11-21 16:15:09,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108163477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:15:09,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:15:09,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:15:09,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203361358] [2022-11-21 16:15:09,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:15:09,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:15:09,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:15:09,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:15:09,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:15:09,660 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-21 16:15:09,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 250 transitions, 556 flow. Second operand has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:09,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:15:09,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-21 16:15:09,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:15:09,809 INFO L130 PetriNetUnfolder]: 8/385 cut-off events. [2022-11-21 16:15:09,810 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-21 16:15:09,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 385 events. 8/385 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 856 event pairs, 0 based on Foata normal form. 4/370 useless extension candidates. Maximal degree in co-relation 296. Up to 28 conditions per place. [2022-11-21 16:15:09,813 INFO L137 encePairwiseOnDemand]: 255/259 looper letters, 16 selfloop transitions, 5 changer transitions 0/249 dead transitions. [2022-11-21 16:15:09,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 249 transitions, 596 flow [2022-11-21 16:15:09,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:15:09,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 16:15:09,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 943 transitions. [2022-11-21 16:15:09,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9102316602316602 [2022-11-21 16:15:09,818 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 943 transitions. [2022-11-21 16:15:09,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 943 transitions. [2022-11-21 16:15:09,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:15:09,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 943 transitions. [2022-11-21 16:15:09,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 235.75) internal successors, (943), 4 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:09,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:09,828 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:09,828 INFO L175 Difference]: Start difference. First operand has 255 places, 250 transitions, 556 flow. Second operand 4 states and 943 transitions. [2022-11-21 16:15:09,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 249 transitions, 596 flow [2022-11-21 16:15:09,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 249 transitions, 587 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:15:09,837 INFO L231 Difference]: Finished difference. Result has 255 places, 249 transitions, 558 flow [2022-11-21 16:15:09,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=558, PETRI_PLACES=255, PETRI_TRANSITIONS=249} [2022-11-21 16:15:09,839 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 8 predicate places. [2022-11-21 16:15:09,839 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 249 transitions, 558 flow [2022-11-21 16:15:09,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:09,840 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:15:09,841 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:15:09,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:15:10,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:10,048 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)] === [2022-11-21 16:15:10,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:15:10,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1850046175, now seen corresponding path program 1 times [2022-11-21 16:15:10,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:15:10,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281617704] [2022-11-21 16:15:10,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:10,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:15:10,119 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:15:10,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599553344] [2022-11-21 16:15:10,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:10,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:10,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:15:10,124 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:15:10,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:15:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:10,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:15:10,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:15:10,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:15:10,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:15:10,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:15:10,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:15:10,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281617704] [2022-11-21 16:15:10,514 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:15:10,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599553344] [2022-11-21 16:15:10,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599553344] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:15:10,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:15:10,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-21 16:15:10,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384160153] [2022-11-21 16:15:10,516 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:15:10,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:15:10,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:15:10,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:15:10,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:15:10,521 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-21 16:15:10,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 249 transitions, 558 flow. Second operand has 8 states, 8 states have (on average 233.875) internal successors, (1871), 8 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:10,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:15:10,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-21 16:15:10,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:15:10,786 INFO L130 PetriNetUnfolder]: 8/471 cut-off events. [2022-11-21 16:15:10,786 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-21 16:15:10,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 471 events. 8/471 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 604 event pairs, 0 based on Foata normal form. 6/458 useless extension candidates. Maximal degree in co-relation 363. Up to 22 conditions per place. [2022-11-21 16:15:10,789 INFO L137 encePairwiseOnDemand]: 252/259 looper letters, 29 selfloop transitions, 10 changer transitions 0/267 dead transitions. [2022-11-21 16:15:10,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 267 transitions, 690 flow [2022-11-21 16:15:10,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:15:10,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 16:15:10,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2120 transitions. [2022-11-21 16:15:10,795 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9094809094809094 [2022-11-21 16:15:10,796 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2120 transitions. [2022-11-21 16:15:10,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2120 transitions. [2022-11-21 16:15:10,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:15:10,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2120 transitions. [2022-11-21 16:15:10,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 235.55555555555554) internal successors, (2120), 9 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:10,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:10,813 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:10,813 INFO L175 Difference]: Start difference. First operand has 255 places, 249 transitions, 558 flow. Second operand 9 states and 2120 transitions. [2022-11-21 16:15:10,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 267 transitions, 690 flow [2022-11-21 16:15:10,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 267 transitions, 677 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:15:10,823 INFO L231 Difference]: Finished difference. Result has 266 places, 253 transitions, 608 flow [2022-11-21 16:15:10,824 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=608, PETRI_PLACES=266, PETRI_TRANSITIONS=253} [2022-11-21 16:15:10,827 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 19 predicate places. [2022-11-21 16:15:10,827 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 253 transitions, 608 flow [2022-11-21 16:15:10,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 233.875) internal successors, (1871), 8 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:10,828 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:15:10,829 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:15:10,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:15:11,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:11,041 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)] === [2022-11-21 16:15:11,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:15:11,042 INFO L85 PathProgramCache]: Analyzing trace with hash 505126278, now seen corresponding path program 1 times [2022-11-21 16:15:11,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:15:11,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267380138] [2022-11-21 16:15:11,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:11,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:15:11,083 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:15:11,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [967705130] [2022-11-21 16:15:11,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:11,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:11,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:15:11,086 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:15:11,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:15:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:11,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:15:11,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:15:11,642 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:15:11,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:15:11,948 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:15:11,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:15:11,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267380138] [2022-11-21 16:15:11,949 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:15:11,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967705130] [2022-11-21 16:15:11,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967705130] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:15:11,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:15:11,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-21 16:15:11,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138483130] [2022-11-21 16:15:11,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:15:11,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 16:15:11,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:15:11,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 16:15:11,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:15:11,957 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-21 16:15:11,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 253 transitions, 608 flow. Second operand has 14 states, 14 states have (on average 234.64285714285714) internal successors, (3285), 14 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:11,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:15:11,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-21 16:15:11,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:15:12,345 INFO L130 PetriNetUnfolder]: 15/741 cut-off events. [2022-11-21 16:15:12,345 INFO L131 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2022-11-21 16:15:12,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 741 events. 15/741 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1731 event pairs, 0 based on Foata normal form. 4/707 useless extension candidates. Maximal degree in co-relation 631. Up to 19 conditions per place. [2022-11-21 16:15:12,350 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 37 selfloop transitions, 16 changer transitions 0/281 dead transitions. [2022-11-21 16:15:12,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 281 transitions, 822 flow [2022-11-21 16:15:12,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:15:12,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:15:12,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3520 transitions. [2022-11-21 16:15:12,359 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9060489060489061 [2022-11-21 16:15:12,360 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3520 transitions. [2022-11-21 16:15:12,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3520 transitions. [2022-11-21 16:15:12,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:15:12,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3520 transitions. [2022-11-21 16:15:12,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 234.66666666666666) internal successors, (3520), 15 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:12,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 259.0) internal successors, (4144), 16 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:12,387 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 259.0) internal successors, (4144), 16 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:12,387 INFO L175 Difference]: Start difference. First operand has 266 places, 253 transitions, 608 flow. Second operand 15 states and 3520 transitions. [2022-11-21 16:15:12,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 281 transitions, 822 flow [2022-11-21 16:15:12,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 281 transitions, 804 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-21 16:15:12,401 INFO L231 Difference]: Finished difference. Result has 275 places, 257 transitions, 657 flow [2022-11-21 16:15:12,401 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=657, PETRI_PLACES=275, PETRI_TRANSITIONS=257} [2022-11-21 16:15:12,405 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 28 predicate places. [2022-11-21 16:15:12,405 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 257 transitions, 657 flow [2022-11-21 16:15:12,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 234.64285714285714) internal successors, (3285), 14 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:12,408 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:15:12,409 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:15:12,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:15:12,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:12,616 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)] === [2022-11-21 16:15:12,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:15:12,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1429378977, now seen corresponding path program 2 times [2022-11-21 16:15:12,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:15:12,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757364027] [2022-11-21 16:15:12,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:12,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:15:12,679 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:15:12,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598820293] [2022-11-21 16:15:12,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:15:12,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:12,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:15:12,681 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:15:12,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:15:12,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:15:12,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:15:12,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 16:15:12,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:15:13,137 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-21 16:15:13,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:15:13,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:15:13,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757364027] [2022-11-21 16:15:13,138 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:15:13,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598820293] [2022-11-21 16:15:13,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598820293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:15:13,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:15:13,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:15:13,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557135945] [2022-11-21 16:15:13,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:15:13,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:15:13,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:15:13,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:15:13,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:15:13,141 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 259 [2022-11-21 16:15:13,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 257 transitions, 657 flow. Second operand has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:13,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:15:13,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 259 [2022-11-21 16:15:13,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:15:13,356 INFO L130 PetriNetUnfolder]: 15/741 cut-off events. [2022-11-21 16:15:13,357 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-11-21 16:15:13,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 981 conditions, 741 events. 15/741 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1730 event pairs, 0 based on Foata normal form. 0/705 useless extension candidates. Maximal degree in co-relation 628. Up to 50 conditions per place. [2022-11-21 16:15:13,361 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 29 selfloop transitions, 5 changer transitions 0/269 dead transitions. [2022-11-21 16:15:13,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 269 transitions, 749 flow [2022-11-21 16:15:13,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:15:13,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:15:13,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1175 transitions. [2022-11-21 16:15:13,365 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9073359073359073 [2022-11-21 16:15:13,366 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1175 transitions. [2022-11-21 16:15:13,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1175 transitions. [2022-11-21 16:15:13,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:15:13,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1175 transitions. [2022-11-21 16:15:13,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:13,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:13,374 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:13,374 INFO L175 Difference]: Start difference. First operand has 275 places, 257 transitions, 657 flow. Second operand 5 states and 1175 transitions. [2022-11-21 16:15:13,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 269 transitions, 749 flow [2022-11-21 16:15:13,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 269 transitions, 690 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-21 16:15:13,382 INFO L231 Difference]: Finished difference. Result has 270 places, 260 transitions, 632 flow [2022-11-21 16:15:13,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=632, PETRI_PLACES=270, PETRI_TRANSITIONS=260} [2022-11-21 16:15:13,383 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 23 predicate places. [2022-11-21 16:15:13,384 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 260 transitions, 632 flow [2022-11-21 16:15:13,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:13,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:15:13,385 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:15:13,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 16:15:13,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 16:15:13,592 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)] === [2022-11-21 16:15:13,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:15:13,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1361075661, now seen corresponding path program 1 times [2022-11-21 16:15:13,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:15:13,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565921483] [2022-11-21 16:15:13,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:13,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:15:13,647 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:15:13,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [314876213] [2022-11-21 16:15:13,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:13,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:13,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:15:13,649 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:15:13,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 16:15:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:13,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:15:13,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:15:14,200 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:15:14,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:15:14,501 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:15:14,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:15:14,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565921483] [2022-11-21 16:15:14,502 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:15:14,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314876213] [2022-11-21 16:15:14,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314876213] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:15:14,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:15:14,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-21 16:15:14,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005481869] [2022-11-21 16:15:14,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:15:14,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 16:15:14,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:15:14,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 16:15:14,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:15:14,509 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-21 16:15:14,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 260 transitions, 632 flow. Second operand has 16 states, 16 states have (on average 234.6875) internal successors, (3755), 16 states have internal predecessors, (3755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:14,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:15:14,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-21 16:15:14,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:15:14,986 INFO L130 PetriNetUnfolder]: 8/805 cut-off events. [2022-11-21 16:15:14,986 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2022-11-21 16:15:14,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1116 conditions, 805 events. 8/805 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 627 event pairs, 0 based on Foata normal form. 8/798 useless extension candidates. Maximal degree in co-relation 650. Up to 20 conditions per place. [2022-11-21 16:15:14,989 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 60 selfloop transitions, 22 changer transitions 0/313 dead transitions. [2022-11-21 16:15:14,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 313 transitions, 989 flow [2022-11-21 16:15:14,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 16:15:14,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-21 16:15:14,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4936 transitions. [2022-11-21 16:15:14,999 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9075197646626219 [2022-11-21 16:15:14,999 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4936 transitions. [2022-11-21 16:15:14,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4936 transitions. [2022-11-21 16:15:15,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:15:15,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4936 transitions. [2022-11-21 16:15:15,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 235.04761904761904) internal successors, (4936), 21 states have internal predecessors, (4936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:15,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 259.0) internal successors, (5698), 22 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:15,027 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 259.0) internal successors, (5698), 22 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:15,027 INFO L175 Difference]: Start difference. First operand has 270 places, 260 transitions, 632 flow. Second operand 21 states and 4936 transitions. [2022-11-21 16:15:15,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 313 transitions, 989 flow [2022-11-21 16:15:15,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 313 transitions, 979 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-21 16:15:15,034 INFO L231 Difference]: Finished difference. Result has 294 places, 269 transitions, 742 flow [2022-11-21 16:15:15,035 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=742, PETRI_PLACES=294, PETRI_TRANSITIONS=269} [2022-11-21 16:15:15,036 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 47 predicate places. [2022-11-21 16:15:15,036 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 269 transitions, 742 flow [2022-11-21 16:15:15,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 234.6875) internal successors, (3755), 16 states have internal predecessors, (3755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:15,038 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:15:15,038 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] [2022-11-21 16:15:15,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 16:15:15,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:15,245 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)] === [2022-11-21 16:15:15,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:15:15,246 INFO L85 PathProgramCache]: Analyzing trace with hash -984629043, now seen corresponding path program 2 times [2022-11-21 16:15:15,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:15:15,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397645910] [2022-11-21 16:15:15,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:15,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:15:15,320 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:15:15,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914745163] [2022-11-21 16:15:15,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:15:15,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:15,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:15:15,322 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:15:15,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 16:15:15,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:15:15,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:15:15,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 16:15:15,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:15:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-21 16:15:16,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:15:16,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:15:16,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397645910] [2022-11-21 16:15:16,113 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:15:16,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914745163] [2022-11-21 16:15:16,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914745163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:15:16,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:15:16,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:15:16,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018268475] [2022-11-21 16:15:16,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:15:16,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:15:16,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:15:16,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:15:16,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:15:16,116 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 259 [2022-11-21 16:15:16,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 269 transitions, 742 flow. Second operand has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:16,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:15:16,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 259 [2022-11-21 16:15:16,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:15:16,368 INFO L130 PetriNetUnfolder]: 8/803 cut-off events. [2022-11-21 16:15:16,369 INFO L131 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-11-21 16:15:16,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1122 conditions, 803 events. 8/803 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 622 event pairs, 0 based on Foata normal form. 2/790 useless extension candidates. Maximal degree in co-relation 651. Up to 80 conditions per place. [2022-11-21 16:15:16,372 INFO L137 encePairwiseOnDemand]: 255/259 looper letters, 18 selfloop transitions, 5 changer transitions 0/267 dead transitions. [2022-11-21 16:15:16,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 267 transitions, 778 flow [2022-11-21 16:15:16,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:15:16,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 16:15:16,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 933 transitions. [2022-11-21 16:15:16,375 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9005791505791506 [2022-11-21 16:15:16,375 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 933 transitions. [2022-11-21 16:15:16,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 933 transitions. [2022-11-21 16:15:16,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:15:16,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 933 transitions. [2022-11-21 16:15:16,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:16,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:16,381 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:16,381 INFO L175 Difference]: Start difference. First operand has 294 places, 269 transitions, 742 flow. Second operand 4 states and 933 transitions. [2022-11-21 16:15:16,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 267 transitions, 778 flow [2022-11-21 16:15:16,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 267 transitions, 755 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-21 16:15:16,388 INFO L231 Difference]: Finished difference. Result has 285 places, 267 transitions, 719 flow [2022-11-21 16:15:16,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=719, PETRI_PLACES=285, PETRI_TRANSITIONS=267} [2022-11-21 16:15:16,390 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 38 predicate places. [2022-11-21 16:15:16,390 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 267 transitions, 719 flow [2022-11-21 16:15:16,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:16,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:15:16,391 INFO L209 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:15:16,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 16:15:16,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:16,604 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:15:16,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:15:16,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1280389661, now seen corresponding path program 1 times [2022-11-21 16:15:16,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:15:16,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323614022] [2022-11-21 16:15:16,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:16,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:15:16,681 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:15:16,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574170844] [2022-11-21 16:15:16,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:16,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:16,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:15:16,683 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:15:16,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 16:15:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:17,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 1490 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 16:15:17,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:15:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 313 proven. 868 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:15:17,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:15:18,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 313 proven. 868 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:15:18,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:15:18,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323614022] [2022-11-21 16:15:18,772 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:15:18,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574170844] [2022-11-21 16:15:18,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574170844] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:15:18,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:15:18,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-21 16:15:18,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852837899] [2022-11-21 16:15:18,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:15:18,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-21 16:15:18,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:15:18,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-21 16:15:18,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-21 16:15:18,789 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-21 16:15:18,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 267 transitions, 719 flow. Second operand has 32 states, 32 states have (on average 235.4375) internal successors, (7534), 32 states have internal predecessors, (7534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:18,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:15:18,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-21 16:15:18,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:15:20,271 INFO L130 PetriNetUnfolder]: 8/1475 cut-off events. [2022-11-21 16:15:20,271 INFO L131 PetriNetUnfolder]: For 725/725 co-relation queries the response was YES. [2022-11-21 16:15:20,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2236 conditions, 1475 events. 8/1475 cut-off events. For 725/725 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 662 event pairs, 0 based on Foata normal form. 16/1476 useless extension candidates. Maximal degree in co-relation 1240. Up to 38 conditions per place. [2022-11-21 16:15:20,276 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 124 selfloop transitions, 46 changer transitions 0/399 dead transitions. [2022-11-21 16:15:20,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 399 transitions, 1655 flow [2022-11-21 16:15:20,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-21 16:15:20,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-21 16:15:20,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 10572 transitions. [2022-11-21 16:15:20,296 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9070785070785071 [2022-11-21 16:15:20,296 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 10572 transitions. [2022-11-21 16:15:20,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 10572 transitions. [2022-11-21 16:15:20,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:15:20,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 10572 transitions. [2022-11-21 16:15:20,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 234.93333333333334) internal successors, (10572), 45 states have internal predecessors, (10572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:20,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 259.0) internal successors, (11914), 46 states have internal predecessors, (11914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:20,350 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 259.0) internal successors, (11914), 46 states have internal predecessors, (11914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:20,350 INFO L175 Difference]: Start difference. First operand has 285 places, 267 transitions, 719 flow. Second operand 45 states and 10572 transitions. [2022-11-21 16:15:20,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 399 transitions, 1655 flow [2022-11-21 16:15:20,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 399 transitions, 1645 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:15:20,363 INFO L231 Difference]: Finished difference. Result has 335 places, 292 transitions, 1032 flow [2022-11-21 16:15:20,364 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1032, PETRI_PLACES=335, PETRI_TRANSITIONS=292} [2022-11-21 16:15:20,365 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 88 predicate places. [2022-11-21 16:15:20,365 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 292 transitions, 1032 flow [2022-11-21 16:15:20,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 235.4375) internal successors, (7534), 32 states have internal predecessors, (7534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:20,368 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:15:20,368 INFO L209 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:15:20,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 16:15:20,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:20,577 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:15:20,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:15:20,578 INFO L85 PathProgramCache]: Analyzing trace with hash -808702947, now seen corresponding path program 2 times [2022-11-21 16:15:20,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:15:20,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130462965] [2022-11-21 16:15:20,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:20,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:15:20,731 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:15:20,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870879189] [2022-11-21 16:15:20,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:15:20,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:20,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:15:20,734 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:15:20,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 16:15:21,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:15:21,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:15:21,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 2826 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-21 16:15:21,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:15:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4979 backedges. 657 proven. 4320 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:15:23,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:15:25,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4979 backedges. 657 proven. 4320 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:15:25,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:15:25,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130462965] [2022-11-21 16:15:25,199 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:15:25,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870879189] [2022-11-21 16:15:25,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870879189] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:15:25,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:15:25,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-21 16:15:25,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276588457] [2022-11-21 16:15:25,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:15:25,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-21 16:15:25,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:15:25,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-21 16:15:25,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-21 16:15:25,220 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-21 16:15:25,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 292 transitions, 1032 flow. Second operand has 61 states, 61 states have (on average 235.54098360655738) internal successors, (14368), 61 states have internal predecessors, (14368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:25,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:15:25,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-21 16:15:25,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:15:29,571 INFO L130 PetriNetUnfolder]: 8/2735 cut-off events. [2022-11-21 16:15:29,571 INFO L131 PetriNetUnfolder]: For 4813/4813 co-relation queries the response was YES. [2022-11-21 16:15:29,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4575 conditions, 2735 events. 8/2735 cut-off events. For 4813/4813 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 736 event pairs, 0 based on Foata normal form. 30/2750 useless extension candidates. Maximal degree in co-relation 2465. Up to 98 conditions per place. [2022-11-21 16:15:29,581 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 244 selfloop transitions, 91 changer transitions 0/564 dead transitions. [2022-11-21 16:15:29,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 564 transitions, 3144 flow [2022-11-21 16:15:29,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-21 16:15:29,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-21 16:15:29,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 21139 transitions. [2022-11-21 16:15:29,633 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9068640068640068 [2022-11-21 16:15:29,634 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 21139 transitions. [2022-11-21 16:15:29,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 21139 transitions. [2022-11-21 16:15:29,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:15:29,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 21139 transitions. [2022-11-21 16:15:29,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 234.87777777777777) internal successors, (21139), 90 states have internal predecessors, (21139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:29,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 259.0) internal successors, (23569), 91 states have internal predecessors, (23569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:29,732 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 259.0) internal successors, (23569), 91 states have internal predecessors, (23569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:29,732 INFO L175 Difference]: Start difference. First operand has 335 places, 292 transitions, 1032 flow. Second operand 90 states and 21139 transitions. [2022-11-21 16:15:29,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 564 transitions, 3144 flow [2022-11-21 16:15:29,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 564 transitions, 3057 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-11-21 16:15:29,763 INFO L231 Difference]: Finished difference. Result has 422 places, 338 transitions, 1664 flow [2022-11-21 16:15:29,764 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1664, PETRI_PLACES=422, PETRI_TRANSITIONS=338} [2022-11-21 16:15:29,765 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 175 predicate places. [2022-11-21 16:15:29,765 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 338 transitions, 1664 flow [2022-11-21 16:15:29,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 235.54098360655738) internal successors, (14368), 61 states have internal predecessors, (14368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:29,770 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:15:29,771 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:15:29,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 16:15:29,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:29,983 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:15:29,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:15:29,984 INFO L85 PathProgramCache]: Analyzing trace with hash -262578959, now seen corresponding path program 3 times [2022-11-21 16:15:29,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:15:29,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308899729] [2022-11-21 16:15:29,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:29,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:15:30,317 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:15:30,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1338254232] [2022-11-21 16:15:30,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:15:30,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:30,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:15:30,320 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:15:30,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 16:15:31,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-21 16:15:31,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:15:31,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:15:31,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:15:31,496 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 1301 proven. 2 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-21 16:15:31,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:15:31,781 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 1301 proven. 2 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-21 16:15:31,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:15:31,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308899729] [2022-11-21 16:15:31,781 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:15:31,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338254232] [2022-11-21 16:15:31,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338254232] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:15:31,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:15:31,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-21 16:15:31,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478879846] [2022-11-21 16:15:31,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:15:31,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:15:31,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:15:31,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:15:31,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:15:31,787 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 259 [2022-11-21 16:15:31,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 338 transitions, 1664 flow. Second operand has 10 states, 10 states have (on average 228.1) internal successors, (2281), 10 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:31,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:15:31,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 259 [2022-11-21 16:15:31,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:15:33,398 INFO L130 PetriNetUnfolder]: 8/2706 cut-off events. [2022-11-21 16:15:33,398 INFO L131 PetriNetUnfolder]: For 3181/3181 co-relation queries the response was YES. [2022-11-21 16:15:33,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4739 conditions, 2706 events. 8/2706 cut-off events. For 3181/3181 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 648 event pairs, 0 based on Foata normal form. 29/2720 useless extension candidates. Maximal degree in co-relation 2481. Up to 310 conditions per place. [2022-11-21 16:15:33,409 INFO L137 encePairwiseOnDemand]: 250/259 looper letters, 39 selfloop transitions, 103 changer transitions 0/361 dead transitions. [2022-11-21 16:15:33,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 361 transitions, 2004 flow [2022-11-21 16:15:33,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:15:33,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 16:15:33,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2954 transitions. [2022-11-21 16:15:33,417 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8773388773388774 [2022-11-21 16:15:33,418 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2954 transitions. [2022-11-21 16:15:33,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2954 transitions. [2022-11-21 16:15:33,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:15:33,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2954 transitions. [2022-11-21 16:15:33,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 227.23076923076923) internal successors, (2954), 13 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:33,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 259.0) internal successors, (3626), 14 states have internal predecessors, (3626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:33,434 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 259.0) internal successors, (3626), 14 states have internal predecessors, (3626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:33,434 INFO L175 Difference]: Start difference. First operand has 422 places, 338 transitions, 1664 flow. Second operand 13 states and 2954 transitions. [2022-11-21 16:15:33,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 361 transitions, 2004 flow [2022-11-21 16:15:33,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 361 transitions, 1883 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-21 16:15:33,471 INFO L231 Difference]: Finished difference. Result has 393 places, 340 transitions, 1800 flow [2022-11-21 16:15:33,471 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1800, PETRI_PLACES=393, PETRI_TRANSITIONS=340} [2022-11-21 16:15:33,472 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 146 predicate places. [2022-11-21 16:15:33,472 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 340 transitions, 1800 flow [2022-11-21 16:15:33,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 228.1) internal successors, (2281), 10 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:33,473 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:15:33,474 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:15:33,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 16:15:33,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-21 16:15:33,682 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:15:33,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:15:33,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1034934093, now seen corresponding path program 1 times [2022-11-21 16:15:33,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:15:33,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309618935] [2022-11-21 16:15:33,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:33,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:15:33,988 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:15:33,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [56977596] [2022-11-21 16:15:33,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:33,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:33,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:15:33,991 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:15:34,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 16:15:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:36,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 5239 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:15:36,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:15:38,295 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-21 16:15:38,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:15:40,681 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-21 16:15:40,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:15:40,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309618935] [2022-11-21 16:15:40,682 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:15:40,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56977596] [2022-11-21 16:15:40,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56977596] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:15:40,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:15:40,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-21 16:15:40,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939252380] [2022-11-21 16:15:40,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:15:40,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:15:40,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:15:40,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:15:40,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:15:40,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 259 [2022-11-21 16:15:40,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 340 transitions, 1800 flow. Second operand has 8 states, 8 states have (on average 231.75) internal successors, (1854), 8 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:40,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:15:40,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 259 [2022-11-21 16:15:40,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:15:43,804 INFO L130 PetriNetUnfolder]: 9/3983 cut-off events. [2022-11-21 16:15:43,804 INFO L131 PetriNetUnfolder]: For 5415/5415 co-relation queries the response was YES. [2022-11-21 16:15:43,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6803 conditions, 3983 events. 9/3983 cut-off events. For 5415/5415 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 406 event pairs, 0 based on Foata normal form. 3/3971 useless extension candidates. Maximal degree in co-relation 4626. Up to 158 conditions per place. [2022-11-21 16:15:43,814 INFO L137 encePairwiseOnDemand]: 252/259 looper letters, 36 selfloop transitions, 9 changer transitions 0/362 dead transitions. [2022-11-21 16:15:43,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 362 transitions, 1954 flow [2022-11-21 16:15:43,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:15:43,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 16:15:43,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2100 transitions. [2022-11-21 16:15:43,816 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9009009009009009 [2022-11-21 16:15:43,816 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2100 transitions. [2022-11-21 16:15:43,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2100 transitions. [2022-11-21 16:15:43,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:15:43,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2100 transitions. [2022-11-21 16:15:43,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 233.33333333333334) internal successors, (2100), 9 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:43,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:43,821 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:43,821 INFO L175 Difference]: Start difference. First operand has 393 places, 340 transitions, 1800 flow. Second operand 9 states and 2100 transitions. [2022-11-21 16:15:43,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 362 transitions, 1954 flow [2022-11-21 16:15:43,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 362 transitions, 1883 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 16:15:43,857 INFO L231 Difference]: Finished difference. Result has 400 places, 344 transitions, 1792 flow [2022-11-21 16:15:43,857 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1792, PETRI_PLACES=400, PETRI_TRANSITIONS=344} [2022-11-21 16:15:43,860 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 153 predicate places. [2022-11-21 16:15:43,861 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 344 transitions, 1792 flow [2022-11-21 16:15:43,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 231.75) internal successors, (1854), 8 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:43,861 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:15:43,862 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:15:43,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-21 16:15:44,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-21 16:15:44,068 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:15:44,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:15:44,069 INFO L85 PathProgramCache]: Analyzing trace with hash 449987226, now seen corresponding path program 1 times [2022-11-21 16:15:44,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:15:44,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898868883] [2022-11-21 16:15:44,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:44,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:15:44,263 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:15:44,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149525963] [2022-11-21 16:15:44,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:44,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:44,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:15:44,265 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:15:44,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-21 16:15:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:54,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 5332 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:15:54,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:15:56,627 INFO L134 CoverageAnalysis]: Checked inductivity of 19200 backedges. 1335 proven. 0 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-21 16:15:56,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:15:56,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:15:56,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898868883] [2022-11-21 16:15:56,628 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:15:56,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149525963] [2022-11-21 16:15:56,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149525963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:15:56,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:15:56,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:15:56,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782356370] [2022-11-21 16:15:56,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:15:56,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:15:56,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:15:56,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:15:56,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:15:56,633 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 259 [2022-11-21 16:15:56,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 344 transitions, 1792 flow. Second operand has 9 states, 9 states have (on average 222.33333333333334) internal successors, (2001), 9 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:15:56,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:15:56,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 259 [2022-11-21 16:15:56,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:16:00,327 INFO L130 PetriNetUnfolder]: 9/3925 cut-off events. [2022-11-21 16:16:00,327 INFO L131 PetriNetUnfolder]: For 5807/5807 co-relation queries the response was YES. [2022-11-21 16:16:00,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7045 conditions, 3925 events. 9/3925 cut-off events. For 5807/5807 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 291 event pairs, 0 based on Foata normal form. 58/3968 useless extension candidates. Maximal degree in co-relation 4709. Up to 354 conditions per place. [2022-11-21 16:16:00,337 INFO L137 encePairwiseOnDemand]: 249/259 looper letters, 169 selfloop transitions, 74 changer transitions 0/457 dead transitions. [2022-11-21 16:16:00,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 457 transitions, 3476 flow [2022-11-21 16:16:00,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:16:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-21 16:16:00,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2671 transitions. [2022-11-21 16:16:00,341 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8593951093951094 [2022-11-21 16:16:00,342 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2671 transitions. [2022-11-21 16:16:00,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2671 transitions. [2022-11-21 16:16:00,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:16:00,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2671 transitions. [2022-11-21 16:16:00,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 222.58333333333334) internal successors, (2671), 12 states have internal predecessors, (2671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:00,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 259.0) internal successors, (3367), 13 states have internal predecessors, (3367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:00,352 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 259.0) internal successors, (3367), 13 states have internal predecessors, (3367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:00,352 INFO L175 Difference]: Start difference. First operand has 400 places, 344 transitions, 1792 flow. Second operand 12 states and 2671 transitions. [2022-11-21 16:16:00,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 457 transitions, 3476 flow [2022-11-21 16:16:00,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 457 transitions, 3462 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-21 16:16:00,389 INFO L231 Difference]: Finished difference. Result has 410 places, 403 transitions, 2755 flow [2022-11-21 16:16:00,390 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2755, PETRI_PLACES=410, PETRI_TRANSITIONS=403} [2022-11-21 16:16:00,391 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 163 predicate places. [2022-11-21 16:16:00,391 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 403 transitions, 2755 flow [2022-11-21 16:16:00,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 222.33333333333334) internal successors, (2001), 9 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:00,392 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:00,393 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:16:00,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-21 16:16:00,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:16:00,608 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:16:00,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:00,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1664200277, now seen corresponding path program 1 times [2022-11-21 16:16:00,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:00,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66937977] [2022-11-21 16:16:00,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:00,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:01,133 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:16:01,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [395582331] [2022-11-21 16:16:01,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:01,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:16:01,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:16:01,156 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:16:01,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-21 16:16:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:05,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 15236 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:16:05,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:16:11,555 INFO L134 CoverageAnalysis]: Checked inductivity of 164517 backedges. 0 proven. 110922 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-21 16:16:11,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:16:17,902 INFO L134 CoverageAnalysis]: Checked inductivity of 164517 backedges. 0 proven. 110922 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-21 16:16:17,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:16:17,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66937977] [2022-11-21 16:16:17,902 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:16:17,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395582331] [2022-11-21 16:16:17,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395582331] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:16:17,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:16:17,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-21 16:16:17,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594789711] [2022-11-21 16:16:17,905 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:16:17,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 16:16:17,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:16:17,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 16:16:17,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:16:17,913 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 259 [2022-11-21 16:16:17,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 403 transitions, 2755 flow. Second operand has 14 states, 14 states have (on average 232.92857142857142) internal successors, (3261), 14 states have internal predecessors, (3261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:17,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:16:17,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 259 [2022-11-21 16:16:17,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:16:22,658 INFO L130 PetriNetUnfolder]: 15/5334 cut-off events. [2022-11-21 16:16:22,658 INFO L131 PetriNetUnfolder]: For 8853/8853 co-relation queries the response was YES. [2022-11-21 16:16:22,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9187 conditions, 5334 events. 15/5334 cut-off events. For 8853/8853 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 872 event pairs, 0 based on Foata normal form. 2/5306 useless extension candidates. Maximal degree in co-relation 6974. Up to 192 conditions per place. [2022-11-21 16:16:22,676 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 43 selfloop transitions, 14 changer transitions 0/434 dead transitions. [2022-11-21 16:16:22,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 434 transitions, 2976 flow [2022-11-21 16:16:22,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:16:22,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:16:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3479 transitions. [2022-11-21 16:16:22,681 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8954954954954955 [2022-11-21 16:16:22,681 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3479 transitions. [2022-11-21 16:16:22,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3479 transitions. [2022-11-21 16:16:22,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:16:22,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3479 transitions. [2022-11-21 16:16:22,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 231.93333333333334) internal successors, (3479), 15 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:22,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 259.0) internal successors, (4144), 16 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:22,696 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 259.0) internal successors, (4144), 16 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:22,696 INFO L175 Difference]: Start difference. First operand has 410 places, 403 transitions, 2755 flow. Second operand 15 states and 3479 transitions. [2022-11-21 16:16:22,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 434 transitions, 2976 flow [2022-11-21 16:16:22,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 434 transitions, 2937 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-11-21 16:16:22,752 INFO L231 Difference]: Finished difference. Result has 414 places, 406 transitions, 2784 flow [2022-11-21 16:16:22,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=2719, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2784, PETRI_PLACES=414, PETRI_TRANSITIONS=406} [2022-11-21 16:16:22,754 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 167 predicate places. [2022-11-21 16:16:22,754 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 406 transitions, 2784 flow [2022-11-21 16:16:22,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 232.92857142857142) internal successors, (3261), 14 states have internal predecessors, (3261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:22,755 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:22,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:16:22,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-21 16:16:22,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 16:16:22,985 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:16:22,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:22,986 INFO L85 PathProgramCache]: Analyzing trace with hash 2122701357, now seen corresponding path program 2 times [2022-11-21 16:16:22,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:22,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006463662] [2022-11-21 16:16:22,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:22,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:23,695 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:16:23,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516841857] [2022-11-21 16:16:23,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:16:23,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:16:23,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:16:23,697 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:16:23,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-21 16:16:28,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:16:28,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:16:28,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 15359 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:16:28,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:16:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-21 16:16:33,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:16:40,650 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-21 16:16:40,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:16:40,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006463662] [2022-11-21 16:16:40,651 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:16:40,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516841857] [2022-11-21 16:16:40,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516841857] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:16:40,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:16:40,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-21 16:16:40,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619533205] [2022-11-21 16:16:40,654 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:16:40,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 16:16:40,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:16:40,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 16:16:40,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:16:40,660 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 259 [2022-11-21 16:16:40,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 406 transitions, 2784 flow. Second operand has 16 states, 16 states have (on average 232.875) internal successors, (3726), 16 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:40,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:16:40,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 259 [2022-11-21 16:16:40,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:16:53,558 INFO L130 PetriNetUnfolder]: 13/8912 cut-off events. [2022-11-21 16:16:53,558 INFO L131 PetriNetUnfolder]: For 15656/15656 co-relation queries the response was YES. [2022-11-21 16:16:53,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15623 conditions, 8912 events. 13/8912 cut-off events. For 15656/15656 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 294 event pairs, 0 based on Foata normal form. 4/8901 useless extension candidates. Maximal degree in co-relation 13243. Up to 336 conditions per place. [2022-11-21 16:16:53,578 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 69 selfloop transitions, 21 changer transitions 0/467 dead transitions. [2022-11-21 16:16:53,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 467 transitions, 3196 flow [2022-11-21 16:16:53,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 16:16:53,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-21 16:16:53,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4882 transitions. [2022-11-21 16:16:53,587 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8975914690200405 [2022-11-21 16:16:53,587 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4882 transitions. [2022-11-21 16:16:53,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4882 transitions. [2022-11-21 16:16:53,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:16:53,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4882 transitions. [2022-11-21 16:16:53,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 232.47619047619048) internal successors, (4882), 21 states have internal predecessors, (4882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:53,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 259.0) internal successors, (5698), 22 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:53,602 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 259.0) internal successors, (5698), 22 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:53,602 INFO L175 Difference]: Start difference. First operand has 414 places, 406 transitions, 2784 flow. Second operand 21 states and 4882 transitions. [2022-11-21 16:16:53,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 467 transitions, 3196 flow [2022-11-21 16:16:53,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 467 transitions, 3112 flow, removed 15 selfloop flow, removed 12 redundant places. [2022-11-21 16:16:53,664 INFO L231 Difference]: Finished difference. Result has 427 places, 416 transitions, 2875 flow [2022-11-21 16:16:53,665 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2875, PETRI_PLACES=427, PETRI_TRANSITIONS=416} [2022-11-21 16:16:53,665 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 180 predicate places. [2022-11-21 16:16:53,665 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 416 transitions, 2875 flow [2022-11-21 16:16:53,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 232.875) internal successors, (3726), 16 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:53,666 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:53,669 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:16:53,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-21 16:16:53,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:16:53,884 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-21 16:16:53,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:53,885 INFO L85 PathProgramCache]: Analyzing trace with hash -984338451, now seen corresponding path program 3 times [2022-11-21 16:16:53,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:53,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915299252] [2022-11-21 16:16:53,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:53,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:55,060 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:16:55,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [684448448] [2022-11-21 16:16:55,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:16:55,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:16:55,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:16:55,062 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:16:55,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7109e4c-2e78-47c8-b94f-335ced65247d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process