./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/reorder_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b 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_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/reorder_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP --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 b8118921f4e94a266cc060fbf2fdaa97ed8f96343f174115bf05a8f09a1b77a8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:14:29,570 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:14:29,695 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 21:14:29,709 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:14:29,712 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:14:29,754 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:14:29,756 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:14:29,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:14:29,758 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:14:29,765 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:14:29,767 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:14:29,767 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:14:29,768 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:14:29,770 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:14:29,770 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:14:29,771 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:14:29,771 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:14:29,772 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:14:29,772 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:14:29,772 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:14:29,773 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:14:29,773 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:14:29,776 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 21:14:29,776 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:14:29,776 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:14:29,777 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:14:29,777 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:14:29,778 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:14:29,779 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:14:29,779 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:14:29,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:29,781 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:14:29,781 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:14:29,781 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:14:29,781 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:14:29,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:14:29,782 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:14:29,782 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:14:29,782 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:14:29,783 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:14:29,783 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:14:29,783 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8118921f4e94a266cc060fbf2fdaa97ed8f96343f174115bf05a8f09a1b77a8 [2023-11-06 21:14:30,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:14:30,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:14:30,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:14:30,125 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:14:30,126 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:14:30,127 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/reorder_2.i [2023-11-06 21:14:33,099 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:14:33,468 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:14:33,468 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/sv-benchmarks/c/pthread/reorder_2.i [2023-11-06 21:14:33,492 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/data/69b10d6e4/c9f001c428b547ee8e786204228b6496/FLAG95898e697 [2023-11-06 21:14:33,511 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/data/69b10d6e4/c9f001c428b547ee8e786204228b6496 [2023-11-06 21:14:33,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:14:33,516 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:14:33,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:33,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:14:33,524 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:14:33,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:33" (1/1) ... [2023-11-06 21:14:33,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6abc125f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:33, skipping insertion in model container [2023-11-06 21:14:33,527 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:33" (1/1) ... [2023-11-06 21:14:33,615 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:14:34,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:34,459 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:14:34,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:34,667 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:14:34,675 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:14:34,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34 WrapperNode [2023-11-06 21:14:34,676 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:34,677 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:34,677 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:14:34,678 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:14:34,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,731 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,762 INFO L138 Inliner]: procedures = 372, calls = 47, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 186 [2023-11-06 21:14:34,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:34,764 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:14:34,764 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:14:34,764 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:14:34,774 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,785 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,786 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,795 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,817 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,819 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,821 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:14:34,826 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:14:34,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:14:34,826 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:14:34,827 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:34,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:34,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:34,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:14:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-11-06 21:14:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:14:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 21:14:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:14:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:14:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2023-11-06 21:14:34,936 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2023-11-06 21:14:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:14:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:14:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2023-11-06 21:14:34,937 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2023-11-06 21:14:34,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:14:34,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:14:34,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:14:34,939 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:14:35,090 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:14:35,092 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:14:35,378 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:14:35,388 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:14:35,388 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 21:14:35,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:35 BoogieIcfgContainer [2023-11-06 21:14:35,391 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:14:35,394 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:14:35,394 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:14:35,397 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:14:35,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:14:33" (1/3) ... [2023-11-06 21:14:35,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264959b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:35, skipping insertion in model container [2023-11-06 21:14:35,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (2/3) ... [2023-11-06 21:14:35,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264959b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:35, skipping insertion in model container [2023-11-06 21:14:35,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:35" (3/3) ... [2023-11-06 21:14:35,401 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2023-11-06 21:14:35,409 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:14:35,420 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:14:35,421 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-06 21:14:35,421 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:14:35,493 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 21:14:35,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 209 transitions, 438 flow [2023-11-06 21:14:35,749 INFO L124 PetriNetUnfolderBase]: 39/424 cut-off events. [2023-11-06 21:14:35,750 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 21:14:35,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 424 events. 39/424 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1586 event pairs, 0 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 220. Up to 8 conditions per place. [2023-11-06 21:14:35,759 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 209 transitions, 438 flow [2023-11-06 21:14:35,775 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 209 transitions, 438 flow [2023-11-06 21:14:35,779 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:14:35,799 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 196 places, 209 transitions, 438 flow [2023-11-06 21:14:35,808 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 196 places, 209 transitions, 438 flow [2023-11-06 21:14:35,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 209 transitions, 438 flow [2023-11-06 21:14:35,874 INFO L124 PetriNetUnfolderBase]: 39/424 cut-off events. [2023-11-06 21:14:35,875 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 21:14:35,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 424 events. 39/424 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1586 event pairs, 0 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 220. Up to 8 conditions per place. [2023-11-06 21:14:35,886 INFO L119 LiptonReduction]: Number of co-enabled transitions 3930 [2023-11-06 21:14:53,180 INFO L134 LiptonReduction]: Checked pairs total: 4908 [2023-11-06 21:14:53,181 INFO L136 LiptonReduction]: Total number of compositions: 225 [2023-11-06 21:14:53,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:14:53,204 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;@2adba64f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:14:53,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-06 21:14:53,211 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:14:53,212 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-06 21:14:53,212 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:14:53,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:14:53,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 21:14:53,213 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-06 21:14:53,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:53,219 INFO L85 PathProgramCache]: Analyzing trace with hash 23549386, now seen corresponding path program 1 times [2023-11-06 21:14:53,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:53,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848744781] [2023-11-06 21:14:53,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:53,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:53,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:53,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:53,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848744781] [2023-11-06 21:14:53,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848744781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:53,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:53,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:14:53,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015850198] [2023-11-06 21:14:53,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:53,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:14:53,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:53,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:14:53,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:14:53,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 434 [2023-11-06 21:14:53,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:53,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:14:53,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 434 [2023-11-06 21:14:53,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:14:53,988 INFO L124 PetriNetUnfolderBase]: 114/284 cut-off events. [2023-11-06 21:14:53,988 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-06 21:14:53,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 284 events. 114/284 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1149 event pairs, 54 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 392. Up to 143 conditions per place. [2023-11-06 21:14:53,991 INFO L140 encePairwiseOnDemand]: 417/434 looper letters, 30 selfloop transitions, 7 changer transitions 6/47 dead transitions. [2023-11-06 21:14:53,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 47 transitions, 212 flow [2023-11-06 21:14:53,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:14:53,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:14:54,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 588 transitions. [2023-11-06 21:14:54,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2023-11-06 21:14:54,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 588 transitions. [2023-11-06 21:14:54,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 588 transitions. [2023-11-06 21:14:54,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:14:54,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 588 transitions. [2023-11-06 21:14:54,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:54,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:54,039 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:54,041 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 88 flow. Second operand 3 states and 588 transitions. [2023-11-06 21:14:54,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 47 transitions, 212 flow [2023-11-06 21:14:54,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 47 transitions, 212 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:14:54,051 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 120 flow [2023-11-06 21:14:54,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=434, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-11-06 21:14:54,061 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-11-06 21:14:54,062 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 120 flow [2023-11-06 21:14:54,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:54,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:14:54,063 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 21:14:54,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:14:54,064 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-06 21:14:54,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:54,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1156146973, now seen corresponding path program 1 times [2023-11-06 21:14:54,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:54,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479557793] [2023-11-06 21:14:54,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:54,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:14:54,165 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:14:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:14:54,267 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:14:54,267 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 21:14:54,270 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-06 21:14:54,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-11-06 21:14:54,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-11-06 21:14:54,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-11-06 21:14:54,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-11-06 21:14:54,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-11-06 21:14:54,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-11-06 21:14:54,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-11-06 21:14:54,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-11-06 21:14:54,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-11-06 21:14:54,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:14:54,277 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 21:14:54,282 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 21:14:54,282 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 21:14:54,341 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-06 21:14:54,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 235 transitions, 514 flow [2023-11-06 21:14:54,600 INFO L124 PetriNetUnfolderBase]: 155/1373 cut-off events. [2023-11-06 21:14:54,601 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 21:14:54,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1462 conditions, 1373 events. 155/1373 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 7935 event pairs, 1 based on Foata normal form. 0/1155 useless extension candidates. Maximal degree in co-relation 787. Up to 32 conditions per place. [2023-11-06 21:14:54,610 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 235 transitions, 514 flow [2023-11-06 21:14:54,618 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 235 transitions, 514 flow [2023-11-06 21:14:54,619 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:14:54,619 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 235 transitions, 514 flow [2023-11-06 21:14:54,621 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 235 transitions, 514 flow [2023-11-06 21:14:54,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 235 transitions, 514 flow [2023-11-06 21:14:54,837 INFO L124 PetriNetUnfolderBase]: 155/1373 cut-off events. [2023-11-06 21:14:54,838 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 21:14:54,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1462 conditions, 1373 events. 155/1373 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 7935 event pairs, 1 based on Foata normal form. 0/1155 useless extension candidates. Maximal degree in co-relation 787. Up to 32 conditions per place. [2023-11-06 21:14:54,886 INFO L119 LiptonReduction]: Number of co-enabled transitions 9040 [2023-11-06 21:15:07,997 INFO L134 LiptonReduction]: Checked pairs total: 14187 [2023-11-06 21:15:07,997 INFO L136 LiptonReduction]: Total number of compositions: 249 [2023-11-06 21:15:07,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:15:08,001 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;@2adba64f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:15:08,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-06 21:15:08,005 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:15:08,006 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2023-11-06 21:15:08,006 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:15:08,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:08,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:15:08,007 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-06 21:15:08,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:08,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1214627389, now seen corresponding path program 1 times [2023-11-06 21:15:08,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:08,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714566691] [2023-11-06 21:15:08,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:08,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:08,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:08,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:08,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714566691] [2023-11-06 21:15:08,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714566691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:08,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:08,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:15:08,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813910950] [2023-11-06 21:15:08,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:08,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:15:08,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:08,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:15:08,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:15:08,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 484 [2023-11-06 21:15:08,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:08,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:08,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 484 [2023-11-06 21:15:08,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:09,220 INFO L124 PetriNetUnfolderBase]: 3778/6327 cut-off events. [2023-11-06 21:15:09,221 INFO L125 PetriNetUnfolderBase]: For 576/576 co-relation queries the response was YES. [2023-11-06 21:15:09,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12927 conditions, 6327 events. 3778/6327 cut-off events. For 576/576 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 37892 event pairs, 917 based on Foata normal form. 0/5209 useless extension candidates. Maximal degree in co-relation 8567. Up to 2987 conditions per place. [2023-11-06 21:15:09,340 INFO L140 encePairwiseOnDemand]: 465/484 looper letters, 59 selfloop transitions, 14 changer transitions 2/81 dead transitions. [2023-11-06 21:15:09,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 81 transitions, 380 flow [2023-11-06 21:15:09,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:15:09,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:15:09,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 839 transitions. [2023-11-06 21:15:09,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43336776859504134 [2023-11-06 21:15:09,348 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 839 transitions. [2023-11-06 21:15:09,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 839 transitions. [2023-11-06 21:15:09,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:09,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 839 transitions. [2023-11-06 21:15:09,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 209.75) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:09,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 484.0) internal successors, (2420), 5 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:09,364 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 484.0) internal successors, (2420), 5 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:09,364 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 134 flow. Second operand 4 states and 839 transitions. [2023-11-06 21:15:09,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 81 transitions, 380 flow [2023-11-06 21:15:09,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 81 transitions, 380 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:15:09,373 INFO L231 Difference]: Finished difference. Result has 52 places, 57 transitions, 248 flow [2023-11-06 21:15:09,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=52, PETRI_TRANSITIONS=57} [2023-11-06 21:15:09,375 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 6 predicate places. [2023-11-06 21:15:09,375 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 57 transitions, 248 flow [2023-11-06 21:15:09,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:09,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:09,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:15:09,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:15:09,377 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-06 21:15:09,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:09,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1214627391, now seen corresponding path program 1 times [2023-11-06 21:15:09,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:09,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301572379] [2023-11-06 21:15:09,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:09,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:09,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:09,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301572379] [2023-11-06 21:15:09,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301572379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:09,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:09,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:15:09,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583024071] [2023-11-06 21:15:09,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:09,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:09,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:09,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:09,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:09,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 484 [2023-11-06 21:15:09,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 57 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:09,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:09,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 484 [2023-11-06 21:15:09,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:10,457 INFO L124 PetriNetUnfolderBase]: 3082/5248 cut-off events. [2023-11-06 21:15:10,457 INFO L125 PetriNetUnfolderBase]: For 2836/2836 co-relation queries the response was YES. [2023-11-06 21:15:10,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12499 conditions, 5248 events. 3082/5248 cut-off events. For 2836/2836 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 30837 event pairs, 1352 based on Foata normal form. 229/5310 useless extension candidates. Maximal degree in co-relation 8326. Up to 2872 conditions per place. [2023-11-06 21:15:10,499 INFO L140 encePairwiseOnDemand]: 472/484 looper letters, 55 selfloop transitions, 8 changer transitions 0/69 dead transitions. [2023-11-06 21:15:10,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 69 transitions, 414 flow [2023-11-06 21:15:10,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:10,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:15:10,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 655 transitions. [2023-11-06 21:15:10,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511019283746556 [2023-11-06 21:15:10,503 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 655 transitions. [2023-11-06 21:15:10,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 655 transitions. [2023-11-06 21:15:10,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:10,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 655 transitions. [2023-11-06 21:15:10,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:10,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:10,511 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:10,512 INFO L175 Difference]: Start difference. First operand has 52 places, 57 transitions, 248 flow. Second operand 3 states and 655 transitions. [2023-11-06 21:15:10,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 69 transitions, 414 flow [2023-11-06 21:15:10,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 69 transitions, 414 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:15:10,531 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 248 flow [2023-11-06 21:15:10,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2023-11-06 21:15:10,534 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2023-11-06 21:15:10,534 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 248 flow [2023-11-06 21:15:10,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:10,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:10,535 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 21:15:10,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:15:10,536 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-06 21:15:10,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:10,536 INFO L85 PathProgramCache]: Analyzing trace with hash 149490240, now seen corresponding path program 1 times [2023-11-06 21:15:10,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:10,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688342363] [2023-11-06 21:15:10,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:10,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:10,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:10,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688342363] [2023-11-06 21:15:10,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688342363] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:10,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940172787] [2023-11-06 21:15:10,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:10,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:10,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:10,767 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:10,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:15:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:10,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:15:10,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:11,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:11,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:15:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:11,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940172787] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:15:11,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:15:11,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2023-11-06 21:15:11,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390333886] [2023-11-06 21:15:11,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:15:11,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 21:15:11,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:11,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 21:15:11,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:15:11,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 484 [2023-11-06 21:15:11,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 248 flow. Second operand has 9 states, 9 states have (on average 192.33333333333334) internal successors, (1731), 9 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:11,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:11,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 484 [2023-11-06 21:15:11,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:12,917 INFO L124 PetriNetUnfolderBase]: 3119/5448 cut-off events. [2023-11-06 21:15:12,917 INFO L125 PetriNetUnfolderBase]: For 3722/3722 co-relation queries the response was YES. [2023-11-06 21:15:12,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13418 conditions, 5448 events. 3119/5448 cut-off events. For 3722/3722 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 32144 event pairs, 1120 based on Foata normal form. 0/5438 useless extension candidates. Maximal degree in co-relation 8604. Up to 2085 conditions per place. [2023-11-06 21:15:12,966 INFO L140 encePairwiseOnDemand]: 470/484 looper letters, 81 selfloop transitions, 21 changer transitions 6/114 dead transitions. [2023-11-06 21:15:12,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 114 transitions, 708 flow [2023-11-06 21:15:12,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:15:12,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:15:12,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1446 transitions. [2023-11-06 21:15:12,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268004722550177 [2023-11-06 21:15:12,974 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1446 transitions. [2023-11-06 21:15:12,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1446 transitions. [2023-11-06 21:15:12,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:12,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1446 transitions. [2023-11-06 21:15:12,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 206.57142857142858) internal successors, (1446), 7 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:12,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 484.0) internal successors, (3872), 8 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:12,993 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 484.0) internal successors, (3872), 8 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:12,993 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 248 flow. Second operand 7 states and 1446 transitions. [2023-11-06 21:15:12,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 114 transitions, 708 flow [2023-11-06 21:15:13,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 114 transitions, 695 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:15:13,009 INFO L231 Difference]: Finished difference. Result has 54 places, 58 transitions, 323 flow [2023-11-06 21:15:13,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=323, PETRI_PLACES=54, PETRI_TRANSITIONS=58} [2023-11-06 21:15:13,010 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 8 predicate places. [2023-11-06 21:15:13,010 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 58 transitions, 323 flow [2023-11-06 21:15:13,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 192.33333333333334) internal successors, (1731), 9 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:13,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:13,012 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 21:15:13,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:13,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:13,219 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-06 21:15:13,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:13,220 INFO L85 PathProgramCache]: Analyzing trace with hash 149490242, now seen corresponding path program 1 times [2023-11-06 21:15:13,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:13,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13556780] [2023-11-06 21:15:13,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:13,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:13,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:13,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:13,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13556780] [2023-11-06 21:15:13,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13556780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:13,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:13,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:15:13,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465087816] [2023-11-06 21:15:13,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:13,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:13,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:13,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:13,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:13,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 484 [2023-11-06 21:15:13,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 58 transitions, 323 flow. Second operand has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:13,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:13,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 484 [2023-11-06 21:15:13,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:14,160 INFO L124 PetriNetUnfolderBase]: 2863/5019 cut-off events. [2023-11-06 21:15:14,160 INFO L125 PetriNetUnfolderBase]: For 4816/4816 co-relation queries the response was YES. [2023-11-06 21:15:14,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12592 conditions, 5019 events. 2863/5019 cut-off events. For 4816/4816 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 30206 event pairs, 2673 based on Foata normal form. 181/5186 useless extension candidates. Maximal degree in co-relation 3797. Up to 4617 conditions per place. [2023-11-06 21:15:14,189 INFO L140 encePairwiseOnDemand]: 479/484 looper letters, 21 selfloop transitions, 1 changer transitions 24/50 dead transitions. [2023-11-06 21:15:14,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 351 flow [2023-11-06 21:15:14,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:14,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:15:14,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 622 transitions. [2023-11-06 21:15:14,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4283746556473829 [2023-11-06 21:15:14,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 622 transitions. [2023-11-06 21:15:14,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 622 transitions. [2023-11-06 21:15:14,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:14,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 622 transitions. [2023-11-06 21:15:14,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:14,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:14,205 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:14,205 INFO L175 Difference]: Start difference. First operand has 54 places, 58 transitions, 323 flow. Second operand 3 states and 622 transitions. [2023-11-06 21:15:14,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 351 flow [2023-11-06 21:15:14,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 50 transitions, 309 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-06 21:15:14,215 INFO L231 Difference]: Finished difference. Result has 46 places, 26 transitions, 107 flow [2023-11-06 21:15:14,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=46, PETRI_TRANSITIONS=26} [2023-11-06 21:15:14,219 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2023-11-06 21:15:14,219 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 26 transitions, 107 flow [2023-11-06 21:15:14,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:14,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:14,220 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 21:15:14,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:15:14,220 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-06 21:15:14,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:14,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1926238489, now seen corresponding path program 1 times [2023-11-06 21:15:14,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:14,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986562194] [2023-11-06 21:15:14,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:14,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:14,354 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:15:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:14,432 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:15:14,434 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 21:15:14,434 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-06 21:15:14,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-11-06 21:15:14,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-11-06 21:15:14,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-11-06 21:15:14,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-11-06 21:15:14,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-11-06 21:15:14,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-11-06 21:15:14,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-11-06 21:15:14,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-11-06 21:15:14,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-11-06 21:15:14,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:15:14,440 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-06 21:15:14,441 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 21:15:14,442 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 21:15:14,478 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-11-06 21:15:14,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 261 transitions, 594 flow [2023-11-06 21:15:15,401 INFO L124 PetriNetUnfolderBase]: 653/4690 cut-off events. [2023-11-06 21:15:15,401 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-11-06 21:15:15,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5126 conditions, 4690 events. 653/4690 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 36960 event pairs, 32 based on Foata normal form. 0/3943 useless extension candidates. Maximal degree in co-relation 2688. Up to 192 conditions per place. [2023-11-06 21:15:15,449 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 261 transitions, 594 flow [2023-11-06 21:15:15,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 261 transitions, 594 flow [2023-11-06 21:15:15,472 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:15:15,472 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 261 transitions, 594 flow [2023-11-06 21:15:15,473 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 261 transitions, 594 flow [2023-11-06 21:15:15,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 261 transitions, 594 flow [2023-11-06 21:15:16,309 INFO L124 PetriNetUnfolderBase]: 653/4690 cut-off events. [2023-11-06 21:15:16,309 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-11-06 21:15:16,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5126 conditions, 4690 events. 653/4690 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 36960 event pairs, 32 based on Foata normal form. 0/3943 useless extension candidates. Maximal degree in co-relation 2688. Up to 192 conditions per place. [2023-11-06 21:15:16,429 INFO L119 LiptonReduction]: Number of co-enabled transitions 15330 [2023-11-06 21:15:30,950 INFO L134 LiptonReduction]: Checked pairs total: 28831 [2023-11-06 21:15:30,950 INFO L136 LiptonReduction]: Total number of compositions: 273 [2023-11-06 21:15:30,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:15:30,953 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;@2adba64f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:15:30,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-06 21:15:30,957 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:15:30,957 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2023-11-06 21:15:30,957 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:15:30,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:30,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:15:30,958 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-06 21:15:30,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:30,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1746354426, now seen corresponding path program 1 times [2023-11-06 21:15:30,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:30,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888416969] [2023-11-06 21:15:30,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:30,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:31,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:31,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:31,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888416969] [2023-11-06 21:15:31,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888416969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:31,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:31,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:15:31,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160792875] [2023-11-06 21:15:31,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:31,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:15:31,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:31,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:15:31,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:15:31,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 534 [2023-11-06 21:15:31,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:31,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:31,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 534 [2023-11-06 21:15:31,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:40,972 INFO L124 PetriNetUnfolderBase]: 71292/102571 cut-off events. [2023-11-06 21:15:40,973 INFO L125 PetriNetUnfolderBase]: For 11783/11783 co-relation queries the response was YES. [2023-11-06 21:15:41,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210540 conditions, 102571 events. 71292/102571 cut-off events. For 11783/11783 co-relation queries the response was YES. Maximal size of possible extension queue 2107. Compared 703888 event pairs, 23504 based on Foata normal form. 0/88952 useless extension candidates. Maximal degree in co-relation 67019. Up to 52638 conditions per place. [2023-11-06 21:15:41,562 INFO L140 encePairwiseOnDemand]: 515/534 looper letters, 78 selfloop transitions, 14 changer transitions 2/100 dead transitions. [2023-11-06 21:15:41,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 100 transitions, 496 flow [2023-11-06 21:15:41,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:15:41,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:15:41,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 926 transitions. [2023-11-06 21:15:41,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43352059925093633 [2023-11-06 21:15:41,568 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 926 transitions. [2023-11-06 21:15:41,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 926 transitions. [2023-11-06 21:15:41,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:41,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 926 transitions. [2023-11-06 21:15:41,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 231.5) internal successors, (926), 4 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:41,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 534.0) internal successors, (2670), 5 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:41,577 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 534.0) internal successors, (2670), 5 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:41,577 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 180 flow. Second operand 4 states and 926 transitions. [2023-11-06 21:15:41,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 100 transitions, 496 flow [2023-11-06 21:15:41,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 100 transitions, 496 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:15:41,695 INFO L231 Difference]: Finished difference. Result has 61 places, 66 transitions, 294 flow [2023-11-06 21:15:41,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=61, PETRI_TRANSITIONS=66} [2023-11-06 21:15:41,697 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2023-11-06 21:15:41,697 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 294 flow [2023-11-06 21:15:41,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:41,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:41,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:15:41,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:15:41,699 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-06 21:15:41,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:41,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1746354425, now seen corresponding path program 1 times [2023-11-06 21:15:41,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:41,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320795513] [2023-11-06 21:15:41,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:41,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:41,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:41,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:41,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320795513] [2023-11-06 21:15:41,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320795513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:41,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:41,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:15:41,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747675271] [2023-11-06 21:15:41,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:41,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:41,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:41,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:41,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:41,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 534 [2023-11-06 21:15:41,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:41,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:41,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 534 [2023-11-06 21:15:41,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:50,695 INFO L124 PetriNetUnfolderBase]: 58987/85935 cut-off events. [2023-11-06 21:15:50,695 INFO L125 PetriNetUnfolderBase]: For 38148/38148 co-relation queries the response was YES. [2023-11-06 21:15:50,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197954 conditions, 85935 events. 58987/85935 cut-off events. For 38148/38148 co-relation queries the response was YES. Maximal size of possible extension queue 1770. Compared 587688 event pairs, 28733 based on Foata normal form. 2681/86143 useless extension candidates. Maximal degree in co-relation 63756. Up to 53020 conditions per place. [2023-11-06 21:15:51,192 INFO L140 encePairwiseOnDemand]: 522/534 looper letters, 71 selfloop transitions, 8 changer transitions 0/85 dead transitions. [2023-11-06 21:15:51,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 85 transitions, 518 flow [2023-11-06 21:15:51,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:51,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:15:51,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 722 transitions. [2023-11-06 21:15:51,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45068664169787764 [2023-11-06 21:15:51,196 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 722 transitions. [2023-11-06 21:15:51,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 722 transitions. [2023-11-06 21:15:51,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:51,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 722 transitions. [2023-11-06 21:15:51,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:51,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:51,203 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:51,203 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 294 flow. Second operand 3 states and 722 transitions. [2023-11-06 21:15:51,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 85 transitions, 518 flow [2023-11-06 21:15:51,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 518 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:15:51,440 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 294 flow [2023-11-06 21:15:51,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2023-11-06 21:15:51,443 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2023-11-06 21:15:51,443 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 294 flow [2023-11-06 21:15:51,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:51,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:51,444 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 21:15:51,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:15:51,444 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-06 21:15:51,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:51,445 INFO L85 PathProgramCache]: Analyzing trace with hash 457238409, now seen corresponding path program 1 times [2023-11-06 21:15:51,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:51,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276501431] [2023-11-06 21:15:51,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:51,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:51,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:51,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:51,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276501431] [2023-11-06 21:15:51,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276501431] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:51,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326261794] [2023-11-06 21:15:51,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:51,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:51,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:51,611 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:51,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:15:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:51,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:15:51,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:52,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:15:52,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:52,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326261794] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:15:52,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:15:52,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2023-11-06 21:15:52,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844161200] [2023-11-06 21:15:52,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:15:52,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 21:15:52,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:52,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 21:15:52,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:15:52,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 534 [2023-11-06 21:15:52,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 294 flow. Second operand has 9 states, 9 states have (on average 209.33333333333334) internal successors, (1884), 9 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:52,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:52,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 534 [2023-11-06 21:15:52,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:03,078 INFO L124 PetriNetUnfolderBase]: 66733/98499 cut-off events. [2023-11-06 21:16:03,078 INFO L125 PetriNetUnfolderBase]: For 54536/54536 co-relation queries the response was YES. [2023-11-06 21:16:03,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233374 conditions, 98499 events. 66733/98499 cut-off events. For 54536/54536 co-relation queries the response was YES. Maximal size of possible extension queue 1849. Compared 690958 event pairs, 17345 based on Foata normal form. 0/98486 useless extension candidates. Maximal degree in co-relation 151089. Up to 36018 conditions per place. [2023-11-06 21:16:03,675 INFO L140 encePairwiseOnDemand]: 518/534 looper letters, 159 selfloop transitions, 37 changer transitions 6/208 dead transitions. [2023-11-06 21:16:03,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 208 transitions, 1284 flow [2023-11-06 21:16:03,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:16:03,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 21:16:03,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1872 transitions. [2023-11-06 21:16:03,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43820224719101125 [2023-11-06 21:16:03,686 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1872 transitions. [2023-11-06 21:16:03,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1872 transitions. [2023-11-06 21:16:03,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:03,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1872 transitions. [2023-11-06 21:16:03,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:16:03,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 534.0) internal successors, (4806), 9 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:16:03,704 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 534.0) internal successors, (4806), 9 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:16:03,705 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 294 flow. Second operand 8 states and 1872 transitions. [2023-11-06 21:16:03,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 208 transitions, 1284 flow [2023-11-06 21:16:03,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 208 transitions, 1267 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:16:03,980 INFO L231 Difference]: Finished difference. Result has 65 places, 83 transitions, 508 flow [2023-11-06 21:16:03,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=508, PETRI_PLACES=65, PETRI_TRANSITIONS=83} [2023-11-06 21:16:03,981 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2023-11-06 21:16:03,981 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 83 transitions, 508 flow [2023-11-06 21:16:03,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 209.33333333333334) internal successors, (1884), 9 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:16:03,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:03,982 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 21:16:03,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:04,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a22ecf-3bb8-420d-9be4-87f459503750/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 21:16:04,188 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-06 21:16:04,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:04,188 INFO L85 PathProgramCache]: Analyzing trace with hash 457238408, now seen corresponding path program 1 times [2023-11-06 21:16:04,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:04,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119226955] [2023-11-06 21:16:04,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:04,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:04,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:04,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:04,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119226955] [2023-11-06 21:16:04,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119226955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:04,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:04,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:16:04,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807758641] [2023-11-06 21:16:04,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:04,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:16:04,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:04,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:16:04,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:16:04,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 534 [2023-11-06 21:16:04,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 83 transitions, 508 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:16:04,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:04,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 534 [2023-11-06 21:16:04,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand