./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:46:48,533 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:46:48,696 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:46:48,707 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:46:48,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:46:48,751 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:46:48,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:46:48,753 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:46:48,754 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:46:48,759 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:46:48,760 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:46:48,760 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:46:48,761 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:46:48,763 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:46:48,763 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:46:48,763 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:46:48,764 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:46:48,764 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:46:48,765 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:46:48,765 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:46:48,766 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:46:48,766 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:46:48,767 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:46:48,768 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:46:48,769 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:46:48,769 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:46:48,770 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:46:48,771 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:46:48,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:46:48,771 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:46:48,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:48,773 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:46:48,773 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:46:48,774 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:46:48,774 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:46:48,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:46:48,774 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:46:48,775 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:46:48,775 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:46:48,775 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:46:48,775 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:46:48,776 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_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 [2023-11-19 07:46:49,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:46:49,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:46:49,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:46:49,105 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:46:49,106 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:46:49,107 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2023-11-19 07:46:52,276 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:46:52,697 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:46:52,698 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2023-11-19 07:46:52,722 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/data/0bb5a95c6/5b2949f64a9d47b8b6c9bad2aac70f98/FLAG5c17ecaec [2023-11-19 07:46:52,737 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/data/0bb5a95c6/5b2949f64a9d47b8b6c9bad2aac70f98 [2023-11-19 07:46:52,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:46:52,741 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:46:52,742 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:52,743 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:46:52,748 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:46:52,749 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:52" (1/1) ... [2023-11-19 07:46:52,750 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738677a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:52, skipping insertion in model container [2023-11-19 07:46:52,750 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:52" (1/1) ... [2023-11-19 07:46:52,798 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:46:53,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:53,478 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:46:53,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:53,647 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:46:53,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53 WrapperNode [2023-11-19 07:46:53,648 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:53,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:53,650 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:46:53,650 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:46:53,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,690 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,736 INFO L138 Inliner]: procedures = 270, calls = 42, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 217 [2023-11-19 07:46:53,736 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:53,737 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:46:53,737 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:46:53,737 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:46:53,753 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,758 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,758 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,778 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,780 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,787 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:46:53,788 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:46:53,788 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:46:53,788 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:46:53,789 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:53,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:53,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:53,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:46:53,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:46:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:46:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:46:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:46:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:46:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:46:53,893 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:46:53,894 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:46:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:46:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:46:53,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:46:53,896 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:46:54,071 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:46:54,073 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:46:54,452 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:46:54,464 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:46:54,468 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-19 07:46:54,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:54 BoogieIcfgContainer [2023-11-19 07:46:54,477 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:46:54,481 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:46:54,482 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:46:54,485 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:46:54,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:46:52" (1/3) ... [2023-11-19 07:46:54,487 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d2d732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:54, skipping insertion in model container [2023-11-19 07:46:54,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (2/3) ... [2023-11-19 07:46:54,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d2d732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:54, skipping insertion in model container [2023-11-19 07:46:54,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:54" (3/3) ... [2023-11-19 07:46:54,491 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_76-tricky_address3_racefree.i [2023-11-19 07:46:54,501 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:46:54,512 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:46:54,513 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-19 07:46:54,514 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:46:54,698 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:46:54,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 243 transitions, 493 flow [2023-11-19 07:46:54,858 INFO L124 PetriNetUnfolderBase]: 48/330 cut-off events. [2023-11-19 07:46:54,858 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:46:54,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 330 events. 48/330 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1117 event pairs, 0 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 187. Up to 8 conditions per place. [2023-11-19 07:46:54,868 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 243 transitions, 493 flow [2023-11-19 07:46:54,878 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 240 transitions, 487 flow [2023-11-19 07:46:54,882 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:46:54,894 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 240 transitions, 487 flow [2023-11-19 07:46:54,897 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 240 transitions, 487 flow [2023-11-19 07:46:54,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 240 transitions, 487 flow [2023-11-19 07:46:54,992 INFO L124 PetriNetUnfolderBase]: 47/327 cut-off events. [2023-11-19 07:46:54,992 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:46:54,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 327 events. 47/327 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1114 event pairs, 0 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 187. Up to 8 conditions per place. [2023-11-19 07:46:55,013 INFO L119 LiptonReduction]: Number of co-enabled transitions 17654 [2023-11-19 07:46:59,924 INFO L134 LiptonReduction]: Checked pairs total: 28709 [2023-11-19 07:46:59,925 INFO L136 LiptonReduction]: Total number of compositions: 237 [2023-11-19 07:46:59,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:46:59,987 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@4e95fd9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:46:59,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-19 07:46:59,994 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:46:59,994 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:46:59,995 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:46:59,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:59,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:47:00,012 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:47:00,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:00,020 INFO L85 PathProgramCache]: Analyzing trace with hash 30820, now seen corresponding path program 1 times [2023-11-19 07:47:00,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:00,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899429250] [2023-11-19 07:47:00,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:00,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:00,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:00,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:00,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899429250] [2023-11-19 07:47:00,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899429250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:00,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:00,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:47:00,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631131065] [2023-11-19 07:47:00,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:00,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:00,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:00,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:00,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:00,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 480 [2023-11-19 07:47:00,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 82 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:00,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:00,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 480 [2023-11-19 07:47:00,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:00,685 INFO L124 PetriNetUnfolderBase]: 501/1049 cut-off events. [2023-11-19 07:47:00,685 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:47:00,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2040 conditions, 1049 events. 501/1049 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5713 event pairs, 456 based on Foata normal form. 113/844 useless extension candidates. Maximal degree in co-relation 1969. Up to 985 conditions per place. [2023-11-19 07:47:00,695 INFO L140 encePairwiseOnDemand]: 451/480 looper letters, 50 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-19 07:47:00,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 227 flow [2023-11-19 07:47:00,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:00,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:00,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 692 transitions. [2023-11-19 07:47:00,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2023-11-19 07:47:00,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 692 transitions. [2023-11-19 07:47:00,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 692 transitions. [2023-11-19 07:47:00,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:00,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 692 transitions. [2023-11-19 07:47:00,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:00,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:00,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:00,746 INFO L175 Difference]: Start difference. First operand has 60 places, 82 transitions, 171 flow. Second operand 3 states and 692 transitions. [2023-11-19 07:47:00,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 227 flow [2023-11-19 07:47:00,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 227 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:47:00,755 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 135 flow [2023-11-19 07:47:00,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2023-11-19 07:47:00,762 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 0 predicate places. [2023-11-19 07:47:00,762 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 135 flow [2023-11-19 07:47:00,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:00,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:00,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:47:00,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:47:00,764 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:47:00,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:00,767 INFO L85 PathProgramCache]: Analyzing trace with hash 957596, now seen corresponding path program 1 times [2023-11-19 07:47:00,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:00,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364497889] [2023-11-19 07:47:00,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:00,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:00,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:00,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:00,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364497889] [2023-11-19 07:47:00,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364497889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:00,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:00,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:00,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030966463] [2023-11-19 07:47:00,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:00,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:00,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:00,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:00,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:00,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 480 [2023-11-19 07:47:00,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:00,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:00,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 480 [2023-11-19 07:47:00,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:01,108 INFO L124 PetriNetUnfolderBase]: 501/1048 cut-off events. [2023-11-19 07:47:01,108 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:47:01,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2045 conditions, 1048 events. 501/1048 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5736 event pairs, 456 based on Foata normal form. 0/731 useless extension candidates. Maximal degree in co-relation 2033. Up to 982 conditions per place. [2023-11-19 07:47:01,141 INFO L140 encePairwiseOnDemand]: 477/480 looper letters, 49 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-19 07:47:01,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 233 flow [2023-11-19 07:47:01,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:01,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:01,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2023-11-19 07:47:01,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46041666666666664 [2023-11-19 07:47:01,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2023-11-19 07:47:01,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2023-11-19 07:47:01,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:01,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2023-11-19 07:47:01,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:01,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:01,157 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:01,157 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 135 flow. Second operand 3 states and 663 transitions. [2023-11-19 07:47:01,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 233 flow [2023-11-19 07:47:01,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 229 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:47:01,165 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 131 flow [2023-11-19 07:47:01,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-11-19 07:47:01,167 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 0 predicate places. [2023-11-19 07:47:01,167 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 131 flow [2023-11-19 07:47:01,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:01,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:01,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:47:01,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:47:01,171 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:47:01,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:01,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1534174658, now seen corresponding path program 1 times [2023-11-19 07:47:01,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:01,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083828202] [2023-11-19 07:47:01,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:01,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:01,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:01,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:01,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083828202] [2023-11-19 07:47:01,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083828202] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:01,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596372509] [2023-11-19 07:47:01,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:01,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:01,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:01,256 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:01,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:47:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:01,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:47:01,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:01,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:01,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:01,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:01,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596372509] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:01,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:01,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:47:01,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499983530] [2023-11-19 07:47:01,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:01,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:47:01,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:01,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:47:01,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:47:01,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 480 [2023-11-19 07:47:01,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 204.57142857142858) internal successors, (1432), 7 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:01,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:01,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 480 [2023-11-19 07:47:01,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:01,687 INFO L124 PetriNetUnfolderBase]: 501/1051 cut-off events. [2023-11-19 07:47:01,687 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:47:01,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2054 conditions, 1051 events. 501/1051 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5694 event pairs, 456 based on Foata normal form. 3/738 useless extension candidates. Maximal degree in co-relation 2027. Up to 984 conditions per place. [2023-11-19 07:47:01,696 INFO L140 encePairwiseOnDemand]: 477/480 looper letters, 49 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-11-19 07:47:01,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 251 flow [2023-11-19 07:47:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:47:01,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:47:01,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1275 transitions. [2023-11-19 07:47:01,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427083333333333 [2023-11-19 07:47:01,703 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1275 transitions. [2023-11-19 07:47:01,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1275 transitions. [2023-11-19 07:47:01,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:01,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1275 transitions. [2023-11-19 07:47:01,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 212.5) internal successors, (1275), 6 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:01,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 480.0) internal successors, (3360), 7 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:01,719 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 480.0) internal successors, (3360), 7 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:01,719 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 131 flow. Second operand 6 states and 1275 transitions. [2023-11-19 07:47:01,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 251 flow [2023-11-19 07:47:01,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 60 transitions, 247 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:47:01,724 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 163 flow [2023-11-19 07:47:01,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-11-19 07:47:01,726 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 6 predicate places. [2023-11-19 07:47:01,727 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 163 flow [2023-11-19 07:47:01,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.57142857142858) internal successors, (1432), 7 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:01,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:01,729 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-11-19 07:47:01,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:01,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:01,950 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:47:01,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:01,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1023968394, now seen corresponding path program 2 times [2023-11-19 07:47:01,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:01,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440301732] [2023-11-19 07:47:01,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:01,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:02,063 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:47:02,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:02,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440301732] [2023-11-19 07:47:02,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440301732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:02,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:02,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:02,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698712469] [2023-11-19 07:47:02,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:02,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:02,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:02,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:02,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:02,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 480 [2023-11-19 07:47:02,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:02,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:02,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 480 [2023-11-19 07:47:02,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:02,340 INFO L124 PetriNetUnfolderBase]: 440/971 cut-off events. [2023-11-19 07:47:02,340 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:47:02,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1889 conditions, 971 events. 440/971 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5549 event pairs, 0 based on Foata normal form. 0/715 useless extension candidates. Maximal degree in co-relation 1855. Up to 868 conditions per place. [2023-11-19 07:47:02,349 INFO L140 encePairwiseOnDemand]: 475/480 looper letters, 70 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-11-19 07:47:02,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 78 transitions, 343 flow [2023-11-19 07:47:02,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:02,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:02,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2023-11-19 07:47:02,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47430555555555554 [2023-11-19 07:47:02,353 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2023-11-19 07:47:02,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2023-11-19 07:47:02,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:02,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2023-11-19 07:47:02,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:02,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:02,364 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:02,365 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 163 flow. Second operand 3 states and 683 transitions. [2023-11-19 07:47:02,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 78 transitions, 343 flow [2023-11-19 07:47:02,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 78 transitions, 329 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 07:47:02,374 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 153 flow [2023-11-19 07:47:02,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2023-11-19 07:47:02,377 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 6 predicate places. [2023-11-19 07:47:02,377 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 153 flow [2023-11-19 07:47:02,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:02,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:02,378 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-19 07:47:02,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:47:02,379 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:47:02,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:02,386 INFO L85 PathProgramCache]: Analyzing trace with hash -486054568, now seen corresponding path program 1 times [2023-11-19 07:47:02,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:02,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479584608] [2023-11-19 07:47:02,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:02,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:02,587 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:47:02,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:02,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479584608] [2023-11-19 07:47:02,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479584608] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:02,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487834260] [2023-11-19 07:47:02,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:02,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:02,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:02,592 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:02,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:47:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:02,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:47:02,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:02,717 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:47:02,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:02,782 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:47:02,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487834260] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:02,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:02,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:47:02,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930076686] [2023-11-19 07:47:02,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:02,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:47:02,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:02,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:47:02,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:47:02,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 480 [2023-11-19 07:47:02,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 153 flow. Second operand has 13 states, 13 states have (on average 204.30769230769232) internal successors, (2656), 13 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:02,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:02,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 480 [2023-11-19 07:47:02,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:03,140 INFO L124 PetriNetUnfolderBase]: 460/953 cut-off events. [2023-11-19 07:47:03,141 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2023-11-19 07:47:03,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1945 conditions, 953 events. 460/953 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4906 event pairs, 418 based on Foata normal form. 6/717 useless extension candidates. Maximal degree in co-relation 1892. Up to 886 conditions per place. [2023-11-19 07:47:03,149 INFO L140 encePairwiseOnDemand]: 477/480 looper letters, 47 selfloop transitions, 11 changer transitions 0/64 dead transitions. [2023-11-19 07:47:03,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 64 transitions, 305 flow [2023-11-19 07:47:03,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:47:03,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:47:03,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2500 transitions. [2023-11-19 07:47:03,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340277777777778 [2023-11-19 07:47:03,159 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2500 transitions. [2023-11-19 07:47:03,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2500 transitions. [2023-11-19 07:47:03,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:03,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2500 transitions. [2023-11-19 07:47:03,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 208.33333333333334) internal successors, (2500), 12 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:03,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 480.0) internal successors, (6240), 13 states have internal predecessors, (6240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:03,184 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 480.0) internal successors, (6240), 13 states have internal predecessors, (6240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:03,185 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 153 flow. Second operand 12 states and 2500 transitions. [2023-11-19 07:47:03,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 64 transitions, 305 flow [2023-11-19 07:47:03,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 64 transitions, 301 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:47:03,189 INFO L231 Difference]: Finished difference. Result has 81 places, 64 transitions, 233 flow [2023-11-19 07:47:03,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=233, PETRI_PLACES=81, PETRI_TRANSITIONS=64} [2023-11-19 07:47:03,190 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 21 predicate places. [2023-11-19 07:47:03,190 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 64 transitions, 233 flow [2023-11-19 07:47:03,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 204.30769230769232) internal successors, (2656), 13 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:03,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:03,192 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-19 07:47:03,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:03,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:03,421 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-19 07:47:03,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:03,421 INFO L85 PathProgramCache]: Analyzing trace with hash -194334632, now seen corresponding path program 2 times [2023-11-19 07:47:03,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:03,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134623930] [2023-11-19 07:47:03,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:03,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:47:03,468 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:47:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:47:03,512 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:47:03,513 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:47:03,514 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-11-19 07:47:03,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-11-19 07:47:03,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-11-19 07:47:03,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-11-19 07:47:03,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-11-19 07:47:03,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-11-19 07:47:03,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-11-19 07:47:03,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-11-19 07:47:03,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-11-19 07:47:03,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-11-19 07:47:03,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-11-19 07:47:03,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2023-11-19 07:47:03,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-11-19 07:47:03,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2023-11-19 07:47:03,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2023-11-19 07:47:03,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2023-11-19 07:47:03,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2023-11-19 07:47:03,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-11-19 07:47:03,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2023-11-19 07:47:03,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-11-19 07:47:03,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-11-19 07:47:03,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-11-19 07:47:03,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-11-19 07:47:03,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:47:03,522 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-11-19 07:47:03,525 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:47:03,525 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:47:03,582 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:47:03,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 336 transitions, 688 flow [2023-11-19 07:47:03,707 INFO L124 PetriNetUnfolderBase]: 80/548 cut-off events. [2023-11-19 07:47:03,708 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-19 07:47:03,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 548 events. 80/548 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2335 event pairs, 0 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 332. Up to 12 conditions per place. [2023-11-19 07:47:03,716 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 336 transitions, 688 flow [2023-11-19 07:47:03,724 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 336 transitions, 688 flow [2023-11-19 07:47:03,724 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:47:03,725 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 293 places, 336 transitions, 688 flow [2023-11-19 07:47:03,725 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 293 places, 336 transitions, 688 flow [2023-11-19 07:47:03,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 336 transitions, 688 flow [2023-11-19 07:47:03,830 INFO L124 PetriNetUnfolderBase]: 80/548 cut-off events. [2023-11-19 07:47:03,830 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-19 07:47:03,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 548 events. 80/548 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2335 event pairs, 0 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 332. Up to 12 conditions per place. [2023-11-19 07:47:03,877 INFO L119 LiptonReduction]: Number of co-enabled transitions 55328 [2023-11-19 07:47:09,452 INFO L134 LiptonReduction]: Checked pairs total: 92804 [2023-11-19 07:47:09,452 INFO L136 LiptonReduction]: Total number of compositions: 326 [2023-11-19 07:47:09,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:09,455 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=LoopHeads, 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;@4e95fd9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:09,455 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-11-19 07:47:09,460 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:47:09,460 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:47:09,460 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:09,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:09,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:47:09,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 07:47:09,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:09,461 INFO L85 PathProgramCache]: Analyzing trace with hash 54810, now seen corresponding path program 1 times [2023-11-19 07:47:09,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:09,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492740155] [2023-11-19 07:47:09,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:09,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:09,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:09,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:09,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492740155] [2023-11-19 07:47:09,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492740155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:09,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:09,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:47:09,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117743332] [2023-11-19 07:47:09,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:09,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:09,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:09,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:09,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:09,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 662 [2023-11-19 07:47:09,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 121 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 281.6666666666667) internal successors, (845), 3 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:09,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:09,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 662 [2023-11-19 07:47:09,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:13,184 INFO L124 PetriNetUnfolderBase]: 19249/29724 cut-off events. [2023-11-19 07:47:13,184 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2023-11-19 07:47:13,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58294 conditions, 29724 events. 19249/29724 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 1066. Compared 211706 event pairs, 18264 based on Foata normal form. 3746/24642 useless extension candidates. Maximal degree in co-relation 34888. Up to 28466 conditions per place. [2023-11-19 07:47:13,408 INFO L140 encePairwiseOnDemand]: 620/662 looper letters, 71 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-11-19 07:47:13,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 330 flow [2023-11-19 07:47:13,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:13,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:13,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 957 transitions. [2023-11-19 07:47:13,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818731117824773 [2023-11-19 07:47:13,413 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 957 transitions. [2023-11-19 07:47:13,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 957 transitions. [2023-11-19 07:47:13,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:13,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 957 transitions. [2023-11-19 07:47:13,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:13,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:13,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:13,429 INFO L175 Difference]: Start difference. First operand has 87 places, 121 transitions, 258 flow. Second operand 3 states and 957 transitions. [2023-11-19 07:47:13,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 330 flow [2023-11-19 07:47:13,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 84 transitions, 330 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:47:13,434 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 196 flow [2023-11-19 07:47:13,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2023-11-19 07:47:13,437 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -2 predicate places. [2023-11-19 07:47:13,437 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 196 flow [2023-11-19 07:47:13,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.6666666666667) internal successors, (845), 3 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:13,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:13,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:47:13,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:47:13,439 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 07:47:13,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:13,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1702243, now seen corresponding path program 1 times [2023-11-19 07:47:13,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:13,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838926840] [2023-11-19 07:47:13,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:13,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:13,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:13,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:13,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838926840] [2023-11-19 07:47:13,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838926840] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:13,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707577353] [2023-11-19 07:47:13,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:13,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:13,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:13,485 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:13,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:47:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:13,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:13,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:13,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:13,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707577353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:13,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:13,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 07:47:13,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216153312] [2023-11-19 07:47:13,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:13,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:13,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:13,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:13,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:13,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 662 [2023-11-19 07:47:13,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:13,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:13,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 662 [2023-11-19 07:47:13,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:17,224 INFO L124 PetriNetUnfolderBase]: 19249/29723 cut-off events. [2023-11-19 07:47:17,224 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2023-11-19 07:47:17,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58299 conditions, 29723 events. 19249/29723 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 1066. Compared 211634 event pairs, 18264 based on Foata normal form. 0/20896 useless extension candidates. Maximal degree in co-relation 58286. Up to 28463 conditions per place. [2023-11-19 07:47:17,420 INFO L140 encePairwiseOnDemand]: 658/662 looper letters, 69 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-11-19 07:47:17,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 336 flow [2023-11-19 07:47:17,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:17,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:47:17,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1197 transitions. [2023-11-19 07:47:17,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520392749244713 [2023-11-19 07:47:17,427 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1197 transitions. [2023-11-19 07:47:17,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1197 transitions. [2023-11-19 07:47:17,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:17,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1197 transitions. [2023-11-19 07:47:17,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 299.25) internal successors, (1197), 4 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:17,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 662.0) internal successors, (3310), 5 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:17,438 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 662.0) internal successors, (3310), 5 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:17,438 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 196 flow. Second operand 4 states and 1197 transitions. [2023-11-19 07:47:17,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 336 flow [2023-11-19 07:47:17,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 332 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:47:17,446 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 194 flow [2023-11-19 07:47:17,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2023-11-19 07:47:17,448 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -1 predicate places. [2023-11-19 07:47:17,449 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 194 flow [2023-11-19 07:47:17,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:17,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:17,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:17,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:17,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:47:17,669 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 07:47:17,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:17,670 INFO L85 PathProgramCache]: Analyzing trace with hash 219704150, now seen corresponding path program 1 times [2023-11-19 07:47:17,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:17,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225577281] [2023-11-19 07:47:17,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:17,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:17,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:17,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:17,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225577281] [2023-11-19 07:47:17,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225577281] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:17,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45489327] [2023-11-19 07:47:17,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:17,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:17,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:17,750 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:17,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:47:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:17,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:47:17,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:17,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:17,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:17,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45489327] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:17,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:17,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:47:17,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785027384] [2023-11-19 07:47:17,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:17,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:47:17,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:17,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:47:17,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:47:17,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-11-19 07:47:17,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 281.57142857142856) internal successors, (1971), 7 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:17,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:17,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-11-19 07:47:17,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:20,787 INFO L124 PetriNetUnfolderBase]: 19249/29726 cut-off events. [2023-11-19 07:47:20,787 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2023-11-19 07:47:20,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58309 conditions, 29726 events. 19249/29726 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 1066. Compared 211669 event pairs, 18264 based on Foata normal form. 3/20903 useless extension candidates. Maximal degree in co-relation 58280. Up to 28465 conditions per place. [2023-11-19 07:47:20,953 INFO L140 encePairwiseOnDemand]: 659/662 looper letters, 70 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2023-11-19 07:47:20,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 86 transitions, 356 flow [2023-11-19 07:47:20,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:47:20,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:47:20,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1758 transitions. [2023-11-19 07:47:20,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425981873111782 [2023-11-19 07:47:20,961 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1758 transitions. [2023-11-19 07:47:20,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1758 transitions. [2023-11-19 07:47:20,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:20,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1758 transitions. [2023-11-19 07:47:20,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:20,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 662.0) internal successors, (4634), 7 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:20,977 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 662.0) internal successors, (4634), 7 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:20,977 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 194 flow. Second operand 6 states and 1758 transitions. [2023-11-19 07:47:20,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 86 transitions, 356 flow [2023-11-19 07:47:20,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 86 transitions, 352 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:47:20,984 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 226 flow [2023-11-19 07:47:20,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2023-11-19 07:47:20,986 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2023-11-19 07:47:20,986 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 226 flow [2023-11-19 07:47:20,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 281.57142857142856) internal successors, (1971), 7 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:20,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:20,988 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:21,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-19 07:47:21,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 07:47:21,203 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 07:47:21,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:21,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1912078645, now seen corresponding path program 1 times [2023-11-19 07:47:21,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:21,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380392122] [2023-11-19 07:47:21,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:21,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:21,261 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:47:21,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:21,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380392122] [2023-11-19 07:47:21,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380392122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:21,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:21,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:21,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2337369] [2023-11-19 07:47:21,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:21,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:21,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:21,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:21,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:21,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 662 [2023-11-19 07:47:21,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 283.0) internal successors, (849), 3 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:21,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:21,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 662 [2023-11-19 07:47:21,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:23,749 INFO L124 PetriNetUnfolderBase]: 19029/29560 cut-off events. [2023-11-19 07:47:23,749 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2023-11-19 07:47:23,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58064 conditions, 29560 events. 19029/29560 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 1065. Compared 213893 event pairs, 8778 based on Foata normal form. 0/20833 useless extension candidates. Maximal degree in co-relation 58028. Up to 28356 conditions per place. [2023-11-19 07:47:23,944 INFO L140 encePairwiseOnDemand]: 657/662 looper letters, 93 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-11-19 07:47:23,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 106 transitions, 456 flow [2023-11-19 07:47:23,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:23,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:23,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 937 transitions. [2023-11-19 07:47:23,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47180261832829806 [2023-11-19 07:47:23,950 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 937 transitions. [2023-11-19 07:47:23,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 937 transitions. [2023-11-19 07:47:23,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:23,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 937 transitions. [2023-11-19 07:47:23,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:23,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:23,979 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:23,979 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 226 flow. Second operand 3 states and 937 transitions. [2023-11-19 07:47:23,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 106 transitions, 456 flow [2023-11-19 07:47:23,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 106 transitions, 442 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 07:47:23,984 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 228 flow [2023-11-19 07:47:23,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2023-11-19 07:47:23,987 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 7 predicate places. [2023-11-19 07:47:23,987 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 228 flow [2023-11-19 07:47:23,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.0) internal successors, (849), 3 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:23,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:23,988 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:23,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:47:23,988 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 07:47:23,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:23,989 INFO L85 PathProgramCache]: Analyzing trace with hash 2028451607, now seen corresponding path program 1 times [2023-11-19 07:47:23,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:23,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394992945] [2023-11-19 07:47:23,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:23,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:24,116 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:24,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:24,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394992945] [2023-11-19 07:47:24,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394992945] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:24,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928022116] [2023-11-19 07:47:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:24,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:24,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:24,119 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:24,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:47:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:24,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:47:24,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:24,262 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:24,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:24,334 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:24,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928022116] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:24,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:24,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:47:24,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124322742] [2023-11-19 07:47:24,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:24,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:47:24,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:24,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:47:24,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:47:24,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-11-19 07:47:24,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 228 flow. Second operand has 13 states, 13 states have (on average 281.53846153846155) internal successors, (3660), 13 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:24,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:24,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-11-19 07:47:24,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:27,282 INFO L124 PetriNetUnfolderBase]: 19428/29764 cut-off events. [2023-11-19 07:47:27,282 INFO L125 PetriNetUnfolderBase]: For 1027/1027 co-relation queries the response was YES. [2023-11-19 07:47:27,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59859 conditions, 29764 events. 19428/29764 cut-off events. For 1027/1027 co-relation queries the response was YES. Maximal size of possible extension queue 1059. Compared 208736 event pairs, 18228 based on Foata normal form. 6/21414 useless extension candidates. Maximal degree in co-relation 59804. Up to 28373 conditions per place. [2023-11-19 07:47:27,487 INFO L140 encePairwiseOnDemand]: 659/662 looper letters, 71 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2023-11-19 07:47:27,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 93 transitions, 428 flow [2023-11-19 07:47:27,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:47:27,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:47:27,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3447 transitions. [2023-11-19 07:47:27,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43391238670694865 [2023-11-19 07:47:27,505 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3447 transitions. [2023-11-19 07:47:27,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3447 transitions. [2023-11-19 07:47:27,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:27,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3447 transitions. [2023-11-19 07:47:27,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 287.25) internal successors, (3447), 12 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:27,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 662.0) internal successors, (8606), 13 states have internal predecessors, (8606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:27,540 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 662.0) internal successors, (8606), 13 states have internal predecessors, (8606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:27,540 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 228 flow. Second operand 12 states and 3447 transitions. [2023-11-19 07:47:27,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 93 transitions, 428 flow [2023-11-19 07:47:27,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 93 transitions, 426 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:47:27,546 INFO L231 Difference]: Finished difference. Result has 110 places, 93 transitions, 310 flow [2023-11-19 07:47:27,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=310, PETRI_PLACES=110, PETRI_TRANSITIONS=93} [2023-11-19 07:47:27,547 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 23 predicate places. [2023-11-19 07:47:27,547 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 310 flow [2023-11-19 07:47:27,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 281.53846153846155) internal successors, (3660), 13 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:27,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:27,549 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:27,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:27,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10237a7a-9a8b-4311-af39-e65c6e77e7cf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:47:27,764 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 07:47:27,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:27,765 INFO L85 PathProgramCache]: Analyzing trace with hash -341051465, now seen corresponding path program 2 times [2023-11-19 07:47:27,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:27,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258908466] [2023-11-19 07:47:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:27,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:28,152 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:47:28,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:28,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258908466] [2023-11-19 07:47:28,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258908466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:28,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:28,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:47:28,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557123707] [2023-11-19 07:47:28,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:28,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:47:28,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:28,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:47:28,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:47:28,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 662 [2023-11-19 07:47:28,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 93 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 274.5) internal successors, (1647), 6 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:28,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:28,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 662 [2023-11-19 07:47:28,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:32,765 INFO L124 PetriNetUnfolderBase]: 24837/39152 cut-off events. [2023-11-19 07:47:32,765 INFO L125 PetriNetUnfolderBase]: For 1382/1382 co-relation queries the response was YES. [2023-11-19 07:47:32,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79309 conditions, 39152 events. 24837/39152 cut-off events. For 1382/1382 co-relation queries the response was YES. Maximal size of possible extension queue 1332. Compared 299825 event pairs, 7101 based on Foata normal form. 0/28950 useless extension candidates. Maximal degree in co-relation 79230. Up to 24565 conditions per place. [2023-11-19 07:47:33,006 INFO L140 encePairwiseOnDemand]: 647/662 looper letters, 237 selfloop transitions, 25 changer transitions 0/273 dead transitions. [2023-11-19 07:47:33,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 273 transitions, 1250 flow [2023-11-19 07:47:33,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:47:33,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:47:33,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2168 transitions. [2023-11-19 07:47:33,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46784635304272765 [2023-11-19 07:47:33,015 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2168 transitions. [2023-11-19 07:47:33,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2168 transitions. [2023-11-19 07:47:33,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:33,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2168 transitions. [2023-11-19 07:47:33,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 309.7142857142857) internal successors, (2168), 7 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:33,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 662.0) internal successors, (5296), 8 states have internal predecessors, (5296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:33,034 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 662.0) internal successors, (5296), 8 states have internal predecessors, (5296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:33,034 INFO L175 Difference]: Start difference. First operand has 110 places, 93 transitions, 310 flow. Second operand 7 states and 2168 transitions. [2023-11-19 07:47:33,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 273 transitions, 1250 flow [2023-11-19 07:47:33,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 273 transitions, 1202 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-11-19 07:47:33,045 INFO L231 Difference]: Finished difference. Result has 115 places, 117 transitions, 426 flow [2023-11-19 07:47:33,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=426, PETRI_PLACES=115, PETRI_TRANSITIONS=117} [2023-11-19 07:47:33,046 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 28 predicate places. [2023-11-19 07:47:33,046 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 117 transitions, 426 flow [2023-11-19 07:47:33,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 274.5) internal successors, (1647), 6 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:33,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:33,047 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:33,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:47:33,047 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 07:47:33,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:33,048 INFO L85 PathProgramCache]: Analyzing trace with hash 635249883, now seen corresponding path program 1 times [2023-11-19 07:47:33,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:33,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439285901] [2023-11-19 07:47:33,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:33,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:33,106 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:47:33,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:33,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439285901] [2023-11-19 07:47:33,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439285901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:33,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:33,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:33,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605586503] [2023-11-19 07:47:33,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:33,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:33,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:33,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:33,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:33,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 662 [2023-11-19 07:47:33,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 117 transitions, 426 flow. Second operand has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:33,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:33,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 662 [2023-11-19 07:47:33,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:37,060 INFO L124 PetriNetUnfolderBase]: 23792/38261 cut-off events. [2023-11-19 07:47:37,060 INFO L125 PetriNetUnfolderBase]: For 9884/9884 co-relation queries the response was YES. [2023-11-19 07:47:37,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87989 conditions, 38261 events. 23792/38261 cut-off events. For 9884/9884 co-relation queries the response was YES. Maximal size of possible extension queue 1155. Compared 301267 event pairs, 4792 based on Foata normal form. 0/30445 useless extension candidates. Maximal degree in co-relation 87929. Up to 30652 conditions per place. [2023-11-19 07:47:37,554 INFO L140 encePairwiseOnDemand]: 659/662 looper letters, 148 selfloop transitions, 2 changer transitions 0/161 dead transitions. [2023-11-19 07:47:37,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 161 transitions, 856 flow [2023-11-19 07:47:37,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:37,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:37,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 951 transitions. [2023-11-19 07:47:37,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4788519637462236 [2023-11-19 07:47:37,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 951 transitions. [2023-11-19 07:47:37,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 951 transitions. [2023-11-19 07:47:37,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:37,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 951 transitions. [2023-11-19 07:47:37,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:37,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:37,567 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:37,568 INFO L175 Difference]: Start difference. First operand has 115 places, 117 transitions, 426 flow. Second operand 3 states and 951 transitions. [2023-11-19 07:47:37,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 161 transitions, 856 flow [2023-11-19 07:47:37,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 161 transitions, 856 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:47:37,617 INFO L231 Difference]: Finished difference. Result has 116 places, 116 transitions, 426 flow [2023-11-19 07:47:37,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=426, PETRI_PLACES=116, PETRI_TRANSITIONS=116} [2023-11-19 07:47:37,618 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 29 predicate places. [2023-11-19 07:47:37,618 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 116 transitions, 426 flow [2023-11-19 07:47:37,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:37,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:37,619 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:37,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:47:37,619 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 07:47:37,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:37,619 INFO L85 PathProgramCache]: Analyzing trace with hash 635249885, now seen corresponding path program 1 times [2023-11-19 07:47:37,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:37,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97474824] [2023-11-19 07:47:37,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:37,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-19 07:47:37,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:37,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97474824] [2023-11-19 07:47:37,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97474824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:37,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:37,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:37,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300824169] [2023-11-19 07:47:37,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:37,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:37,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:37,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:37,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:37,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-11-19 07:47:37,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 116 transitions, 426 flow. Second operand has 3 states, 3 states have (on average 283.0) internal successors, (849), 3 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:37,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:37,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-11-19 07:47:37,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand