./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:00:54,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:00:54,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:00:54,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:00:54,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:00:54,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:00:54,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:00:54,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:00:54,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:00:54,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:00:54,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:00:54,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:00:54,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:00:54,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:00:54,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:00:54,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:00:54,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:00:54,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:00:54,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:00:54,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:00:54,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:00:54,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:00:54,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:00:54,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:00:54,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:00:54,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:00:54,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:00:54,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:00:54,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:00:54,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:00:54,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:00:54,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:00:54,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:00:54,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:00:54,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:00:54,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:00:54,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:00:54,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:00:54,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:00:54,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:00:54,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:00:54,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:00:54,190 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:00:54,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:00:54,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:00:54,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:00:54,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:00:54,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:00:54,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:00:54,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:00:54,194 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:00:54,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:00:54,196 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:00:54,196 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:00:54,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:00:54,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:00:54,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:00:54,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:00:54,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:00:54,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:00:54,199 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:00:54,199 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:00:54,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:00:54,200 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:00:54,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:00:54,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:00:54,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:00:54,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:00:54,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:00:54,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:00:54,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:00:54,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:00:54,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:00:54,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:00:54,204 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:00:54,204 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:00:54,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:00:54,205 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 [2022-11-20 11:00:54,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:00:54,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:00:54,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:00:54,583 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:00:54,583 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:00:54,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2022-11-20 11:00:57,510 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:00:57,834 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:00:57,835 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2022-11-20 11:00:57,850 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/data/0ce4e931d/22bd881cb07f4a42a7397287ce36e158/FLAG6af2b12da [2022-11-20 11:00:57,867 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/data/0ce4e931d/22bd881cb07f4a42a7397287ce36e158 [2022-11-20 11:00:57,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:00:57,871 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:00:57,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:00:57,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:00:57,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:00:57,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:00:57" (1/1) ... [2022-11-20 11:00:57,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@242bfff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:57, skipping insertion in model container [2022-11-20 11:00:57,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:00:57" (1/1) ... [2022-11-20 11:00:57,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:00:57,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:00:58,515 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i[47038,47051] [2022-11-20 11:00:58,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:00:58,582 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:00:58,638 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i[47038,47051] [2022-11-20 11:00:58,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:00:58,749 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:00:58,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58 WrapperNode [2022-11-20 11:00:58,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:00:58,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:00:58,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:00:58,753 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:00:58,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (1/1) ... [2022-11-20 11:00:58,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (1/1) ... [2022-11-20 11:00:58,857 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 218 [2022-11-20 11:00:58,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:00:58,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:00:58,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:00:58,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:00:58,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (1/1) ... [2022-11-20 11:00:58,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (1/1) ... [2022-11-20 11:00:58,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (1/1) ... [2022-11-20 11:00:58,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (1/1) ... [2022-11-20 11:00:58,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (1/1) ... [2022-11-20 11:00:58,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (1/1) ... [2022-11-20 11:00:58,923 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (1/1) ... [2022-11-20 11:00:58,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (1/1) ... [2022-11-20 11:00:58,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:00:58,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:00:58,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:00:58,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:00:58,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (1/1) ... [2022-11-20 11:00:58,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:00:58,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:00:58,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:00:59,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:00:59,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:00:59,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:00:59,023 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-20 11:00:59,023 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-20 11:00:59,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:00:59,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:00:59,024 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-20 11:00:59,024 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-20 11:00:59,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:00:59,024 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:00:59,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:00:59,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:00:59,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:00:59,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:00:59,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:00:59,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:00:59,027 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:00:59,224 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:00:59,226 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:00:59,674 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:00:59,701 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:00:59,702 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-20 11:00:59,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:00:59 BoogieIcfgContainer [2022-11-20 11:00:59,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:00:59,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:00:59,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:00:59,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:00:59,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:00:57" (1/3) ... [2022-11-20 11:00:59,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469268e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:00:59, skipping insertion in model container [2022-11-20 11:00:59,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (2/3) ... [2022-11-20 11:00:59,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469268e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:00:59, skipping insertion in model container [2022-11-20 11:00:59,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:00:59" (3/3) ... [2022-11-20 11:00:59,734 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2022-11-20 11:00:59,742 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:00:59,765 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:00:59,767 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-20 11:00:59,768 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:00:59,995 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 11:01:00,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 244 transitions, 510 flow [2022-11-20 11:01:00,240 INFO L130 PetriNetUnfolder]: 52/468 cut-off events. [2022-11-20 11:01:00,241 INFO L131 PetriNetUnfolder]: For 8/15 co-relation queries the response was YES. [2022-11-20 11:01:00,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 468 events. 52/468 cut-off events. For 8/15 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1913 event pairs, 0 based on Foata normal form. 0/383 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2022-11-20 11:01:00,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 244 transitions, 510 flow [2022-11-20 11:01:00,265 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 244 transitions, 510 flow [2022-11-20 11:01:00,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:01:00,284 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@54c74ec3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:01:00,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-20 11:01:00,301 INFO L130 PetriNetUnfolder]: 4/82 cut-off events. [2022-11-20 11:01:00,301 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:01:00,301 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:01:00,302 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:00,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:01:00,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:00,308 INFO L85 PathProgramCache]: Analyzing trace with hash 788658393, now seen corresponding path program 1 times [2022-11-20 11:01:00,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:00,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75995249] [2022-11-20 11:01:00,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:00,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:00,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:00,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:00,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75995249] [2022-11-20 11:01:00,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75995249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:00,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:01:00,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:01:00,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016381323] [2022-11-20 11:01:00,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:00,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:01:00,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:00,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:01:00,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:01:00,946 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 244 [2022-11-20 11:01:00,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 244 transitions, 510 flow. Second operand has 4 states, 4 states have (on average 210.75) internal successors, (843), 4 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:00,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:01:00,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 244 [2022-11-20 11:01:00,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:01:01,145 INFO L130 PetriNetUnfolder]: 9/316 cut-off events. [2022-11-20 11:01:01,145 INFO L131 PetriNetUnfolder]: For 40/87 co-relation queries the response was YES. [2022-11-20 11:01:01,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 316 events. 9/316 cut-off events. For 40/87 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 915 event pairs, 0 based on Foata normal form. 46/328 useless extension candidates. Maximal degree in co-relation 212. Up to 15 conditions per place. [2022-11-20 11:01:01,153 INFO L137 encePairwiseOnDemand]: 221/244 looper letters, 14 selfloop transitions, 4 changer transitions 0/227 dead transitions. [2022-11-20 11:01:01,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 227 transitions, 512 flow [2022-11-20 11:01:01,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:01:01,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:01:01,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1083 transitions. [2022-11-20 11:01:01,181 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8877049180327868 [2022-11-20 11:01:01,181 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1083 transitions. [2022-11-20 11:01:01,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1083 transitions. [2022-11-20 11:01:01,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:01:01,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1083 transitions. [2022-11-20 11:01:01,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 216.6) internal successors, (1083), 5 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:01,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:01,213 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:01,215 INFO L175 Difference]: Start difference. First operand has 226 places, 244 transitions, 510 flow. Second operand 5 states and 1083 transitions. [2022-11-20 11:01:01,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 227 transitions, 512 flow [2022-11-20 11:01:01,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 227 transitions, 512 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:01:01,228 INFO L231 Difference]: Finished difference. Result has 228 places, 225 transitions, 484 flow [2022-11-20 11:01:01,231 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=484, PETRI_PLACES=228, PETRI_TRANSITIONS=225} [2022-11-20 11:01:01,237 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 2 predicate places. [2022-11-20 11:01:01,238 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 225 transitions, 484 flow [2022-11-20 11:01:01,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 210.75) internal successors, (843), 4 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:01,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:01:01,240 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:01,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:01:01,240 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 11:01:01,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:01,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1329285133, now seen corresponding path program 1 times [2022-11-20 11:01:01,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:01,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113591688] [2022-11-20 11:01:01,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:01,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:01:01,331 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:01:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:01:01,384 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:01:01,388 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:01:01,390 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-11-20 11:01:01,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-20 11:01:01,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-20 11:01:01,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-20 11:01:01,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-20 11:01:01,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-20 11:01:01,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-20 11:01:01,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-20 11:01:01,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-20 11:01:01,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-20 11:01:01,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-20 11:01:01,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-20 11:01:01,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-20 11:01:01,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 18 remaining) [2022-11-20 11:01:01,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-20 11:01:01,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-20 11:01:01,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-20 11:01:01,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-20 11:01:01,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:01:01,406 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 11:01:01,409 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:01:01,409 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 11:01:01,541 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-20 11:01:01,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 341 places, 374 transitions, 796 flow [2022-11-20 11:01:02,025 INFO L130 PetriNetUnfolder]: 191/1429 cut-off events. [2022-11-20 11:01:02,026 INFO L131 PetriNetUnfolder]: For 72/95 co-relation queries the response was YES. [2022-11-20 11:01:02,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 1429 events. 191/1429 cut-off events. For 72/95 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 9272 event pairs, 2 based on Foata normal form. 0/1148 useless extension candidates. Maximal degree in co-relation 883. Up to 32 conditions per place. [2022-11-20 11:01:02,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 341 places, 374 transitions, 796 flow [2022-11-20 11:01:02,083 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 341 places, 374 transitions, 796 flow [2022-11-20 11:01:02,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:01:02,092 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@54c74ec3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:01:02,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-20 11:01:02,111 INFO L130 PetriNetUnfolder]: 4/82 cut-off events. [2022-11-20 11:01:02,111 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:01:02,111 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:01:02,112 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:02,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 11:01:02,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:02,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1421621943, now seen corresponding path program 1 times [2022-11-20 11:01:02,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:02,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649724114] [2022-11-20 11:01:02,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:02,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:02,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:02,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:02,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649724114] [2022-11-20 11:01:02,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649724114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:02,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:01:02,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:01:02,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919760292] [2022-11-20 11:01:02,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:02,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:01:02,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:02,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:01:02,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:01:02,283 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 374 [2022-11-20 11:01:02,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 374 transitions, 796 flow. Second operand has 4 states, 4 states have (on average 321.75) internal successors, (1287), 4 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:02,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:01:02,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 374 [2022-11-20 11:01:02,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:01:02,754 INFO L130 PetriNetUnfolder]: 66/1095 cut-off events. [2022-11-20 11:01:02,755 INFO L131 PetriNetUnfolder]: For 295/616 co-relation queries the response was YES. [2022-11-20 11:01:02,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 1095 events. 66/1095 cut-off events. For 295/616 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6765 event pairs, 2 based on Foata normal form. 394/1340 useless extension candidates. Maximal degree in co-relation 819. Up to 85 conditions per place. [2022-11-20 11:01:02,787 INFO L137 encePairwiseOnDemand]: 339/374 looper letters, 27 selfloop transitions, 4 changer transitions 0/351 dead transitions. [2022-11-20 11:01:02,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 351 transitions, 812 flow [2022-11-20 11:01:02,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:01:02,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:01:02,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1663 transitions. [2022-11-20 11:01:02,792 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8893048128342246 [2022-11-20 11:01:02,792 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1663 transitions. [2022-11-20 11:01:02,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1663 transitions. [2022-11-20 11:01:02,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:01:02,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1663 transitions. [2022-11-20 11:01:02,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 332.6) internal successors, (1663), 5 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:02,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:02,803 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:02,804 INFO L175 Difference]: Start difference. First operand has 341 places, 374 transitions, 796 flow. Second operand 5 states and 1663 transitions. [2022-11-20 11:01:02,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 351 transitions, 812 flow [2022-11-20 11:01:02,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 351 transitions, 812 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:01:02,816 INFO L231 Difference]: Finished difference. Result has 346 places, 347 transitions, 768 flow [2022-11-20 11:01:02,818 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=768, PETRI_PLACES=346, PETRI_TRANSITIONS=347} [2022-11-20 11:01:02,819 INFO L288 CegarLoopForPetriNet]: 341 programPoint places, 5 predicate places. [2022-11-20 11:01:02,819 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 347 transitions, 768 flow [2022-11-20 11:01:02,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 321.75) internal successors, (1287), 4 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:02,820 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:01:02,821 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:02,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:01:02,821 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 11:01:02,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:02,822 INFO L85 PathProgramCache]: Analyzing trace with hash 373247699, now seen corresponding path program 1 times [2022-11-20 11:01:02,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:02,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687437572] [2022-11-20 11:01:02,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:02,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:02,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:01:02,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:02,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687437572] [2022-11-20 11:01:02,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687437572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:02,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:01:02,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:01:02,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522956938] [2022-11-20 11:01:02,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:02,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:01:02,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:02,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:01:02,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:01:02,988 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 374 [2022-11-20 11:01:02,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 347 transitions, 768 flow. Second operand has 4 states, 4 states have (on average 323.75) internal successors, (1295), 4 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:02,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:01:02,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 374 [2022-11-20 11:01:02,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:01:03,432 INFO L130 PetriNetUnfolder]: 66/1094 cut-off events. [2022-11-20 11:01:03,432 INFO L131 PetriNetUnfolder]: For 299/607 co-relation queries the response was YES. [2022-11-20 11:01:03,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 1094 events. 66/1094 cut-off events. For 299/607 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6771 event pairs, 2 based on Foata normal form. 13/962 useless extension candidates. Maximal degree in co-relation 1206. Up to 74 conditions per place. [2022-11-20 11:01:03,456 INFO L137 encePairwiseOnDemand]: 368/374 looper letters, 19 selfloop transitions, 8 changer transitions 0/347 dead transitions. [2022-11-20 11:01:03,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 347 transitions, 820 flow [2022-11-20 11:01:03,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:01:03,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:01:03,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1625 transitions. [2022-11-20 11:01:03,461 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8689839572192514 [2022-11-20 11:01:03,462 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1625 transitions. [2022-11-20 11:01:03,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1625 transitions. [2022-11-20 11:01:03,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:01:03,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1625 transitions. [2022-11-20 11:01:03,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:03,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:03,479 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:03,479 INFO L175 Difference]: Start difference. First operand has 346 places, 347 transitions, 768 flow. Second operand 5 states and 1625 transitions. [2022-11-20 11:01:03,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 347 transitions, 820 flow [2022-11-20 11:01:03,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 347 transitions, 818 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:01:03,489 INFO L231 Difference]: Finished difference. Result has 349 places, 347 transitions, 786 flow [2022-11-20 11:01:03,490 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=786, PETRI_PLACES=349, PETRI_TRANSITIONS=347} [2022-11-20 11:01:03,493 INFO L288 CegarLoopForPetriNet]: 341 programPoint places, 8 predicate places. [2022-11-20 11:01:03,493 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 347 transitions, 786 flow [2022-11-20 11:01:03,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 323.75) internal successors, (1295), 4 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:03,500 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:01:03,500 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:03,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:01:03,505 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 11:01:03,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:03,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1314222358, now seen corresponding path program 1 times [2022-11-20 11:01:03,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:03,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193742888] [2022-11-20 11:01:03,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:03,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:03,755 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:03,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:03,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193742888] [2022-11-20 11:01:03,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193742888] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:01:03,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975544507] [2022-11-20 11:01:03,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:03,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:03,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:01:03,761 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:01:03,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:01:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:03,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:01:03,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:04,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:04,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:01:04,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975544507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:04,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:01:04,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:01:04,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005097397] [2022-11-20 11:01:04,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:04,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:01:04,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:04,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:01:04,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:01:04,062 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 374 [2022-11-20 11:01:04,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 347 transitions, 786 flow. Second operand has 6 states, 6 states have (on average 322.6666666666667) internal successors, (1936), 6 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:04,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:01:04,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 374 [2022-11-20 11:01:04,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:01:04,554 INFO L130 PetriNetUnfolder]: 66/1093 cut-off events. [2022-11-20 11:01:04,555 INFO L131 PetriNetUnfolder]: For 304/599 co-relation queries the response was YES. [2022-11-20 11:01:04,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 1093 events. 66/1093 cut-off events. For 304/599 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6764 event pairs, 2 based on Foata normal form. 11/959 useless extension candidates. Maximal degree in co-relation 835. Up to 77 conditions per place. [2022-11-20 11:01:04,593 INFO L137 encePairwiseOnDemand]: 369/374 looper letters, 23 selfloop transitions, 6 changer transitions 0/349 dead transitions. [2022-11-20 11:01:04,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 349 transitions, 846 flow [2022-11-20 11:01:04,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:01:04,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:01:04,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2270 transitions. [2022-11-20 11:01:04,600 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.86707410236822 [2022-11-20 11:01:04,600 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2270 transitions. [2022-11-20 11:01:04,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2270 transitions. [2022-11-20 11:01:04,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:01:04,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2270 transitions. [2022-11-20 11:01:04,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.2857142857143) internal successors, (2270), 7 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:04,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 374.0) internal successors, (2992), 8 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:04,618 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 374.0) internal successors, (2992), 8 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:04,619 INFO L175 Difference]: Start difference. First operand has 349 places, 347 transitions, 786 flow. Second operand 7 states and 2270 transitions. [2022-11-20 11:01:04,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 349 transitions, 846 flow [2022-11-20 11:01:04,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 349 transitions, 834 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:01:04,629 INFO L231 Difference]: Finished difference. Result has 351 places, 346 transitions, 782 flow [2022-11-20 11:01:04,630 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=782, PETRI_PLACES=351, PETRI_TRANSITIONS=346} [2022-11-20 11:01:04,631 INFO L288 CegarLoopForPetriNet]: 341 programPoint places, 10 predicate places. [2022-11-20 11:01:04,632 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 346 transitions, 782 flow [2022-11-20 11:01:04,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 322.6666666666667) internal successors, (1936), 6 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:04,633 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:01:04,633 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:04,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:01:04,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:04,848 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 11:01:04,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:04,849 INFO L85 PathProgramCache]: Analyzing trace with hash 706872433, now seen corresponding path program 1 times [2022-11-20 11:01:04,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:04,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395897251] [2022-11-20 11:01:04,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:04,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:05,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:05,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395897251] [2022-11-20 11:01:05,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395897251] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:01:05,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833931338] [2022-11-20 11:01:05,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:05,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:05,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:01:05,046 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:01:05,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:01:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:05,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:01:05,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:05,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:05,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:01:05,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:05,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833931338] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:01:05,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:01:05,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:01:05,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479562575] [2022-11-20 11:01:05,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:01:05,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:01:05,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:05,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:01:05,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:01:05,345 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 374 [2022-11-20 11:01:05,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 346 transitions, 782 flow. Second operand has 10 states, 10 states have (on average 323.0) internal successors, (3230), 10 states have internal predecessors, (3230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:05,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:01:05,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 374 [2022-11-20 11:01:05,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:01:05,464 INFO L130 PetriNetUnfolder]: 0/129 cut-off events. [2022-11-20 11:01:05,464 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-20 11:01:05,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 129 events. 0/129 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 101 event pairs, 0 based on Foata normal form. 2/131 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2022-11-20 11:01:05,466 INFO L137 encePairwiseOnDemand]: 369/374 looper letters, 13 selfloop transitions, 7 changer transitions 0/123 dead transitions. [2022-11-20 11:01:05,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 123 transitions, 340 flow [2022-11-20 11:01:05,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:01:05,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:01:05,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2902 transitions. [2022-11-20 11:01:05,474 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8621509209744503 [2022-11-20 11:01:05,475 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2902 transitions. [2022-11-20 11:01:05,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2902 transitions. [2022-11-20 11:01:05,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:01:05,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2902 transitions. [2022-11-20 11:01:05,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 322.44444444444446) internal successors, (2902), 9 states have internal predecessors, (2902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:05,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 374.0) internal successors, (3740), 10 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:05,495 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 374.0) internal successors, (3740), 10 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:05,495 INFO L175 Difference]: Start difference. First operand has 351 places, 346 transitions, 782 flow. Second operand 9 states and 2902 transitions. [2022-11-20 11:01:05,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 123 transitions, 340 flow [2022-11-20 11:01:05,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 123 transitions, 323 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-20 11:01:05,499 INFO L231 Difference]: Finished difference. Result has 137 places, 118 transitions, 285 flow [2022-11-20 11:01:05,499 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=285, PETRI_PLACES=137, PETRI_TRANSITIONS=118} [2022-11-20 11:01:05,500 INFO L288 CegarLoopForPetriNet]: 341 programPoint places, -204 predicate places. [2022-11-20 11:01:05,500 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 118 transitions, 285 flow [2022-11-20 11:01:05,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 323.0) internal successors, (3230), 10 states have internal predecessors, (3230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:05,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:01:05,503 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:05,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:01:05,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 11:01:05,709 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 11:01:05,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:05,709 INFO L85 PathProgramCache]: Analyzing trace with hash -261591447, now seen corresponding path program 1 times [2022-11-20 11:01:05,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:05,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042831988] [2022-11-20 11:01:05,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:05,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:01:05,743 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:01:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:01:05,775 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:01:05,775 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:01:05,776 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-20 11:01:05,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2022-11-20 11:01:05,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2022-11-20 11:01:05,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2022-11-20 11:01:05,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2022-11-20 11:01:05,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2022-11-20 11:01:05,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2022-11-20 11:01:05,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2022-11-20 11:01:05,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2022-11-20 11:01:05,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2022-11-20 11:01:05,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2022-11-20 11:01:05,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2022-11-20 11:01:05,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2022-11-20 11:01:05,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 22 remaining) [2022-11-20 11:01:05,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2022-11-20 11:01:05,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2022-11-20 11:01:05,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2022-11-20 11:01:05,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2022-11-20 11:01:05,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2022-11-20 11:01:05,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2022-11-20 11:01:05,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2022-11-20 11:01:05,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2022-11-20 11:01:05,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:01:05,782 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-20 11:01:05,782 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:01:05,782 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 11:01:05,878 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-20 11:01:05,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 456 places, 504 transitions, 1086 flow [2022-11-20 11:01:07,549 INFO L130 PetriNetUnfolder]: 664/4070 cut-off events. [2022-11-20 11:01:07,554 INFO L131 PetriNetUnfolder]: For 419/462 co-relation queries the response was YES. [2022-11-20 11:01:07,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4521 conditions, 4070 events. 664/4070 cut-off events. For 419/462 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 32751 event pairs, 52 based on Foata normal form. 0/3259 useless extension candidates. Maximal degree in co-relation 2595. Up to 192 conditions per place. [2022-11-20 11:01:07,635 INFO L82 GeneralOperation]: Start removeDead. Operand has 456 places, 504 transitions, 1086 flow [2022-11-20 11:01:07,711 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 456 places, 504 transitions, 1086 flow [2022-11-20 11:01:07,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:01:07,713 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@54c74ec3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:01:07,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-20 11:01:07,724 INFO L130 PetriNetUnfolder]: 4/82 cut-off events. [2022-11-20 11:01:07,724 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:01:07,724 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:01:07,724 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:07,725 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-20 11:01:07,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:07,725 INFO L85 PathProgramCache]: Analyzing trace with hash -2112117893, now seen corresponding path program 1 times [2022-11-20 11:01:07,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:07,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665056989] [2022-11-20 11:01:07,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:07,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:07,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:07,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665056989] [2022-11-20 11:01:07,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665056989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:07,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:01:07,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:01:07,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142905542] [2022-11-20 11:01:07,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:07,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:01:07,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:07,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:01:07,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:01:07,853 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 431 out of 504 [2022-11-20 11:01:07,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 504 transitions, 1086 flow. Second operand has 4 states, 4 states have (on average 432.75) internal successors, (1731), 4 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:07,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:01:07,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 431 of 504 [2022-11-20 11:01:07,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:01:09,525 INFO L130 PetriNetUnfolder]: 359/3454 cut-off events. [2022-11-20 11:01:09,525 INFO L131 PetriNetUnfolder]: For 1305/1993 co-relation queries the response was YES. [2022-11-20 11:01:09,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4322 conditions, 3454 events. 359/3454 cut-off events. For 1305/1993 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 28714 event pairs, 36 based on Foata normal form. 2387/5329 useless extension candidates. Maximal degree in co-relation 2565. Up to 421 conditions per place. [2022-11-20 11:01:09,671 INFO L137 encePairwiseOnDemand]: 457/504 looper letters, 33 selfloop transitions, 4 changer transitions 0/468 dead transitions. [2022-11-20 11:01:09,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 468 transitions, 1088 flow [2022-11-20 11:01:09,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:01:09,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:01:09,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2236 transitions. [2022-11-20 11:01:09,676 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8873015873015873 [2022-11-20 11:01:09,677 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2236 transitions. [2022-11-20 11:01:09,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2236 transitions. [2022-11-20 11:01:09,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:01:09,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2236 transitions. [2022-11-20 11:01:09,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 447.2) internal successors, (2236), 5 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:09,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 504.0) internal successors, (3024), 6 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:09,690 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 504.0) internal successors, (3024), 6 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:09,691 INFO L175 Difference]: Start difference. First operand has 456 places, 504 transitions, 1086 flow. Second operand 5 states and 2236 transitions. [2022-11-20 11:01:09,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 468 transitions, 1088 flow [2022-11-20 11:01:09,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 468 transitions, 1088 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:01:09,703 INFO L231 Difference]: Finished difference. Result has 460 places, 464 transitions, 1032 flow [2022-11-20 11:01:09,704 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1032, PETRI_PLACES=460, PETRI_TRANSITIONS=464} [2022-11-20 11:01:09,706 INFO L288 CegarLoopForPetriNet]: 456 programPoint places, 4 predicate places. [2022-11-20 11:01:09,706 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 464 transitions, 1032 flow [2022-11-20 11:01:09,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 432.75) internal successors, (1731), 4 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:09,724 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:01:09,725 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:09,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:01:09,725 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-20 11:01:09,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:09,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1474297089, now seen corresponding path program 1 times [2022-11-20 11:01:09,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:09,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721008834] [2022-11-20 11:01:09,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:09,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:09,815 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:01:09,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:09,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721008834] [2022-11-20 11:01:09,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721008834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:09,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:01:09,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:01:09,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748973023] [2022-11-20 11:01:09,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:09,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:01:09,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:09,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:01:09,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:01:09,819 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 431 out of 504 [2022-11-20 11:01:09,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 464 transitions, 1032 flow. Second operand has 4 states, 4 states have (on average 434.75) internal successors, (1739), 4 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:09,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:01:09,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 431 of 504 [2022-11-20 11:01:09,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:01:11,712 INFO L130 PetriNetUnfolder]: 359/3452 cut-off events. [2022-11-20 11:01:11,714 INFO L131 PetriNetUnfolder]: For 1312/1981 co-relation queries the response was YES. [2022-11-20 11:01:11,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4340 conditions, 3452 events. 359/3452 cut-off events. For 1312/1981 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 28637 event pairs, 36 based on Foata normal form. 20/2967 useless extension candidates. Maximal degree in co-relation 4251. Up to 401 conditions per place. [2022-11-20 11:01:11,822 INFO L137 encePairwiseOnDemand]: 498/504 looper letters, 25 selfloop transitions, 8 changer transitions 0/464 dead transitions. [2022-11-20 11:01:11,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 464 transitions, 1096 flow [2022-11-20 11:01:11,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:01:11,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:01:11,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2186 transitions. [2022-11-20 11:01:11,832 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8674603174603175 [2022-11-20 11:01:11,832 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2186 transitions. [2022-11-20 11:01:11,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2186 transitions. [2022-11-20 11:01:11,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:01:11,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2186 transitions. [2022-11-20 11:01:11,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:11,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 504.0) internal successors, (3024), 6 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:11,846 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 504.0) internal successors, (3024), 6 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:11,846 INFO L175 Difference]: Start difference. First operand has 460 places, 464 transitions, 1032 flow. Second operand 5 states and 2186 transitions. [2022-11-20 11:01:11,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 464 transitions, 1096 flow [2022-11-20 11:01:11,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 464 transitions, 1094 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:01:11,857 INFO L231 Difference]: Finished difference. Result has 463 places, 464 transitions, 1050 flow [2022-11-20 11:01:11,858 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1050, PETRI_PLACES=463, PETRI_TRANSITIONS=464} [2022-11-20 11:01:11,860 INFO L288 CegarLoopForPetriNet]: 456 programPoint places, 7 predicate places. [2022-11-20 11:01:11,860 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 464 transitions, 1050 flow [2022-11-20 11:01:11,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 434.75) internal successors, (1739), 4 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:11,861 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:01:11,862 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:11,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:01:11,862 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-20 11:01:11,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:11,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1541429134, now seen corresponding path program 1 times [2022-11-20 11:01:11,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:11,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821344709] [2022-11-20 11:01:11,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:11,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:12,004 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:12,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:12,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821344709] [2022-11-20 11:01:12,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821344709] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:01:12,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700171310] [2022-11-20 11:01:12,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:12,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:12,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:01:12,007 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:01:12,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:01:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:12,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:01:12,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:12,279 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:12,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:01:12,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700171310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:12,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:01:12,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:01:12,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280718623] [2022-11-20 11:01:12,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:12,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:01:12,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:12,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:01:12,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:01:12,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 431 out of 504 [2022-11-20 11:01:12,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 464 transitions, 1050 flow. Second operand has 6 states, 6 states have (on average 433.6666666666667) internal successors, (2602), 6 states have internal predecessors, (2602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:12,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:01:12,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 431 of 504 [2022-11-20 11:01:12,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:01:13,600 INFO L130 PetriNetUnfolder]: 359/3450 cut-off events. [2022-11-20 11:01:13,601 INFO L131 PetriNetUnfolder]: For 1323/1973 co-relation queries the response was YES. [2022-11-20 11:01:13,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4351 conditions, 3450 events. 359/3450 cut-off events. For 1323/1973 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 28656 event pairs, 36 based on Foata normal form. 14/2959 useless extension candidates. Maximal degree in co-relation 2586. Up to 407 conditions per place. [2022-11-20 11:01:13,981 INFO L137 encePairwiseOnDemand]: 499/504 looper letters, 29 selfloop transitions, 6 changer transitions 0/466 dead transitions. [2022-11-20 11:01:13,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 466 transitions, 1122 flow [2022-11-20 11:01:13,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:01:13,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:01:13,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3053 transitions. [2022-11-20 11:01:13,992 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8653628117913832 [2022-11-20 11:01:13,993 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3053 transitions. [2022-11-20 11:01:13,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3053 transitions. [2022-11-20 11:01:13,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:01:13,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3053 transitions. [2022-11-20 11:01:14,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 436.14285714285717) internal successors, (3053), 7 states have internal predecessors, (3053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:14,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 504.0) internal successors, (4032), 8 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:14,010 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 504.0) internal successors, (4032), 8 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:14,011 INFO L175 Difference]: Start difference. First operand has 463 places, 464 transitions, 1050 flow. Second operand 7 states and 3053 transitions. [2022-11-20 11:01:14,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 466 transitions, 1122 flow [2022-11-20 11:01:14,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 466 transitions, 1110 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:01:14,020 INFO L231 Difference]: Finished difference. Result has 465 places, 463 transitions, 1046 flow [2022-11-20 11:01:14,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1046, PETRI_PLACES=465, PETRI_TRANSITIONS=463} [2022-11-20 11:01:14,023 INFO L288 CegarLoopForPetriNet]: 456 programPoint places, 9 predicate places. [2022-11-20 11:01:14,024 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 463 transitions, 1046 flow [2022-11-20 11:01:14,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 433.6666666666667) internal successors, (2602), 6 states have internal predecessors, (2602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:14,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:01:14,025 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:14,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:01:14,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:14,232 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-20 11:01:14,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:14,233 INFO L85 PathProgramCache]: Analyzing trace with hash 159832242, now seen corresponding path program 1 times [2022-11-20 11:01:14,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:14,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112245475] [2022-11-20 11:01:14,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:14,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:14,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:14,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:14,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112245475] [2022-11-20 11:01:14,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112245475] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:01:14,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460937932] [2022-11-20 11:01:14,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:14,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:14,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:01:14,349 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:01:14,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:01:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:14,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:01:14,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:14,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:14,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:01:14,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:14,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460937932] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:01:14,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:01:14,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:01:14,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949649686] [2022-11-20 11:01:14,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:01:14,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:01:14,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:14,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:01:14,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:01:14,645 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 431 out of 504 [2022-11-20 11:01:14,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 463 transitions, 1046 flow. Second operand has 10 states, 10 states have (on average 434.0) internal successors, (4340), 10 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:14,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:01:14,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 431 of 504 [2022-11-20 11:01:14,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:01:16,010 INFO L130 PetriNetUnfolder]: 333/2830 cut-off events. [2022-11-20 11:01:16,010 INFO L131 PetriNetUnfolder]: For 1226/1433 co-relation queries the response was YES. [2022-11-20 11:01:16,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3696 conditions, 2830 events. 333/2830 cut-off events. For 1226/1433 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 21348 event pairs, 76 based on Foata normal form. 8/2417 useless extension candidates. Maximal degree in co-relation 3544. Up to 392 conditions per place. [2022-11-20 11:01:16,076 INFO L137 encePairwiseOnDemand]: 498/504 looper letters, 34 selfloop transitions, 9 changer transitions 0/474 dead transitions. [2022-11-20 11:01:16,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 474 transitions, 1170 flow [2022-11-20 11:01:16,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:01:16,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:01:16,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3924 transitions. [2022-11-20 11:01:16,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8650793650793651 [2022-11-20 11:01:16,084 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3924 transitions. [2022-11-20 11:01:16,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3924 transitions. [2022-11-20 11:01:16,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:01:16,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3924 transitions. [2022-11-20 11:01:16,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 436.0) internal successors, (3924), 9 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:16,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 504.0) internal successors, (5040), 10 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:16,105 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 504.0) internal successors, (5040), 10 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:16,105 INFO L175 Difference]: Start difference. First operand has 465 places, 463 transitions, 1046 flow. Second operand 9 states and 3924 transitions. [2022-11-20 11:01:16,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 474 transitions, 1170 flow [2022-11-20 11:01:16,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 474 transitions, 1157 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-20 11:01:16,114 INFO L231 Difference]: Finished difference. Result has 472 places, 467 transitions, 1093 flow [2022-11-20 11:01:16,115 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1093, PETRI_PLACES=472, PETRI_TRANSITIONS=467} [2022-11-20 11:01:16,116 INFO L288 CegarLoopForPetriNet]: 456 programPoint places, 16 predicate places. [2022-11-20 11:01:16,116 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 467 transitions, 1093 flow [2022-11-20 11:01:16,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 434.0) internal successors, (4340), 10 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:16,117 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:01:16,118 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:16,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:01:16,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:16,324 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-20 11:01:16,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:16,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1649587430, now seen corresponding path program 1 times [2022-11-20 11:01:16,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:16,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371451111] [2022-11-20 11:01:16,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:16,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:01:16,357 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:01:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:01:16,388 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:01:16,388 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:01:16,388 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2022-11-20 11:01:16,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2022-11-20 11:01:16,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2022-11-20 11:01:16,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2022-11-20 11:01:16,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2022-11-20 11:01:16,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2022-11-20 11:01:16,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2022-11-20 11:01:16,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2022-11-20 11:01:16,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2022-11-20 11:01:16,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 26 remaining) [2022-11-20 11:01:16,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2022-11-20 11:01:16,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2022-11-20 11:01:16,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2022-11-20 11:01:16,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2022-11-20 11:01:16,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2022-11-20 11:01:16,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2022-11-20 11:01:16,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2022-11-20 11:01:16,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2022-11-20 11:01:16,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2022-11-20 11:01:16,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2022-11-20 11:01:16,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2022-11-20 11:01:16,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2022-11-20 11:01:16,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2022-11-20 11:01:16,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2022-11-20 11:01:16,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2022-11-20 11:01:16,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2022-11-20 11:01:16,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:01:16,394 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-20 11:01:16,394 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:01:16,394 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-20 11:01:16,492 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-11-20 11:01:16,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 571 places, 634 transitions, 1380 flow [2022-11-20 11:01:22,646 INFO L130 PetriNetUnfolder]: 2659/13035 cut-off events. [2022-11-20 11:01:22,646 INFO L131 PetriNetUnfolder]: For 2144/2211 co-relation queries the response was YES. [2022-11-20 11:01:23,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15200 conditions, 13035 events. 2659/13035 cut-off events. For 2144/2211 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 127992 event pairs, 626 based on Foata normal form. 0/10496 useless extension candidates. Maximal degree in co-relation 8126. Up to 1024 conditions per place. [2022-11-20 11:01:23,095 INFO L82 GeneralOperation]: Start removeDead. Operand has 571 places, 634 transitions, 1380 flow [2022-11-20 11:01:23,295 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 571 places, 634 transitions, 1380 flow [2022-11-20 11:01:23,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:01:23,297 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@54c74ec3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:01:23,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2022-11-20 11:01:23,303 INFO L130 PetriNetUnfolder]: 4/82 cut-off events. [2022-11-20 11:01:23,304 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:01:23,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:01:23,304 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:23,304 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-20 11:01:23,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:23,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1282829457, now seen corresponding path program 1 times [2022-11-20 11:01:23,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:23,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173882641] [2022-11-20 11:01:23,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:23,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:23,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:23,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:23,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173882641] [2022-11-20 11:01:23,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173882641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:23,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:01:23,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:01:23,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817057647] [2022-11-20 11:01:23,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:23,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:01:23,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:23,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:01:23,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:01:23,378 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 542 out of 634 [2022-11-20 11:01:23,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 634 transitions, 1380 flow. Second operand has 4 states, 4 states have (on average 543.75) internal successors, (2175), 4 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:23,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:01:23,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 542 of 634 [2022-11-20 11:01:23,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:01:28,856 INFO L130 PetriNetUnfolder]: 1860/11821 cut-off events. [2022-11-20 11:01:28,856 INFO L131 PetriNetUnfolder]: For 6349/7544 co-relation queries the response was YES. [2022-11-20 11:01:29,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16079 conditions, 11821 events. 1860/11821 cut-off events. For 6349/7544 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 120665 event pairs, 324 based on Foata normal form. 12726/22778 useless extension candidates. Maximal degree in co-relation 8560. Up to 2103 conditions per place. [2022-11-20 11:01:29,373 INFO L137 encePairwiseOnDemand]: 575/634 looper letters, 39 selfloop transitions, 4 changer transitions 0/585 dead transitions. [2022-11-20 11:01:29,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 585 transitions, 1368 flow [2022-11-20 11:01:29,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:01:29,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:01:29,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2809 transitions. [2022-11-20 11:01:29,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8861198738170347 [2022-11-20 11:01:29,380 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2809 transitions. [2022-11-20 11:01:29,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2809 transitions. [2022-11-20 11:01:29,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:01:29,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2809 transitions. [2022-11-20 11:01:29,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 561.8) internal successors, (2809), 5 states have internal predecessors, (2809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:29,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 634.0) internal successors, (3804), 6 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:29,395 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 634.0) internal successors, (3804), 6 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:29,395 INFO L175 Difference]: Start difference. First operand has 571 places, 634 transitions, 1380 flow. Second operand 5 states and 2809 transitions. [2022-11-20 11:01:29,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 585 transitions, 1368 flow [2022-11-20 11:01:29,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 585 transitions, 1368 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:01:29,408 INFO L231 Difference]: Finished difference. Result has 574 places, 581 transitions, 1300 flow [2022-11-20 11:01:29,409 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1300, PETRI_PLACES=574, PETRI_TRANSITIONS=581} [2022-11-20 11:01:29,410 INFO L288 CegarLoopForPetriNet]: 571 programPoint places, 3 predicate places. [2022-11-20 11:01:29,410 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 581 transitions, 1300 flow [2022-11-20 11:01:29,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 543.75) internal successors, (2175), 4 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:29,411 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:01:29,412 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:29,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:01:29,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-20 11:01:29,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:29,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1800234127, now seen corresponding path program 1 times [2022-11-20 11:01:29,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:29,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804160064] [2022-11-20 11:01:29,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:29,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:29,477 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:01:29,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:29,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804160064] [2022-11-20 11:01:29,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804160064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:29,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:01:29,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:01:29,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71655886] [2022-11-20 11:01:29,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:29,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:01:29,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:29,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:01:29,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:01:29,482 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 542 out of 634 [2022-11-20 11:01:29,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 581 transitions, 1300 flow. Second operand has 4 states, 4 states have (on average 545.75) internal successors, (2183), 4 states have internal predecessors, (2183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:29,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:01:29,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 542 of 634 [2022-11-20 11:01:29,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:01:35,347 INFO L130 PetriNetUnfolder]: 1860/11818 cut-off events. [2022-11-20 11:01:35,347 INFO L131 PetriNetUnfolder]: For 6358/7529 co-relation queries the response was YES. [2022-11-20 11:01:35,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16100 conditions, 11818 events. 1860/11818 cut-off events. For 6358/7529 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 121237 event pairs, 324 based on Foata normal form. 27/10086 useless extension candidates. Maximal degree in co-relation 16009. Up to 2074 conditions per place. [2022-11-20 11:01:35,899 INFO L137 encePairwiseOnDemand]: 628/634 looper letters, 31 selfloop transitions, 8 changer transitions 0/581 dead transitions. [2022-11-20 11:01:35,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 581 transitions, 1376 flow [2022-11-20 11:01:35,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:01:35,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:01:35,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2747 transitions. [2022-11-20 11:01:35,906 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8665615141955836 [2022-11-20 11:01:35,906 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2747 transitions. [2022-11-20 11:01:35,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2747 transitions. [2022-11-20 11:01:35,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:01:35,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2747 transitions. [2022-11-20 11:01:35,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 549.4) internal successors, (2747), 5 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:35,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 634.0) internal successors, (3804), 6 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:35,923 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 634.0) internal successors, (3804), 6 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:35,924 INFO L175 Difference]: Start difference. First operand has 574 places, 581 transitions, 1300 flow. Second operand 5 states and 2747 transitions. [2022-11-20 11:01:35,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 581 transitions, 1376 flow [2022-11-20 11:01:35,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 581 transitions, 1374 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:01:35,939 INFO L231 Difference]: Finished difference. Result has 577 places, 581 transitions, 1318 flow [2022-11-20 11:01:35,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1318, PETRI_PLACES=577, PETRI_TRANSITIONS=581} [2022-11-20 11:01:35,941 INFO L288 CegarLoopForPetriNet]: 571 programPoint places, 6 predicate places. [2022-11-20 11:01:35,941 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 581 transitions, 1318 flow [2022-11-20 11:01:35,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 545.75) internal successors, (2183), 4 states have internal predecessors, (2183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:35,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:01:35,943 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:35,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:01:35,943 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-20 11:01:35,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:35,944 INFO L85 PathProgramCache]: Analyzing trace with hash 27318906, now seen corresponding path program 1 times [2022-11-20 11:01:35,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:35,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631588545] [2022-11-20 11:01:35,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:35,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:36,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:36,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631588545] [2022-11-20 11:01:36,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631588545] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:01:36,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638904179] [2022-11-20 11:01:36,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:36,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:36,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:01:36,119 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:01:36,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:01:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:36,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:01:36,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:36,419 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:36,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:01:36,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638904179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:36,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:01:36,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:01:36,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834955993] [2022-11-20 11:01:36,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:36,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:01:36,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:36,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:01:36,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:01:36,427 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 542 out of 634 [2022-11-20 11:01:36,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 581 transitions, 1318 flow. Second operand has 6 states, 6 states have (on average 544.6666666666666) internal successors, (3268), 6 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:36,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:01:36,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 542 of 634 [2022-11-20 11:01:36,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:01:41,899 INFO L130 PetriNetUnfolder]: 1860/11815 cut-off events. [2022-11-20 11:01:41,899 INFO L131 PetriNetUnfolder]: For 6374/7521 co-relation queries the response was YES. [2022-11-20 11:01:42,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16113 conditions, 11815 events. 1860/11815 cut-off events. For 6374/7521 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 120843 event pairs, 324 based on Foata normal form. 17/10073 useless extension candidates. Maximal degree in co-relation 8586. Up to 2083 conditions per place. [2022-11-20 11:01:42,497 INFO L137 encePairwiseOnDemand]: 629/634 looper letters, 35 selfloop transitions, 6 changer transitions 0/583 dead transitions. [2022-11-20 11:01:42,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 583 transitions, 1402 flow [2022-11-20 11:01:42,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:01:42,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:01:42,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3836 transitions. [2022-11-20 11:01:42,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8643533123028391 [2022-11-20 11:01:42,508 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3836 transitions. [2022-11-20 11:01:42,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3836 transitions. [2022-11-20 11:01:42,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:01:42,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3836 transitions. [2022-11-20 11:01:42,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 548.0) internal successors, (3836), 7 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:42,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 634.0) internal successors, (5072), 8 states have internal predecessors, (5072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:42,531 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 634.0) internal successors, (5072), 8 states have internal predecessors, (5072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:42,531 INFO L175 Difference]: Start difference. First operand has 577 places, 581 transitions, 1318 flow. Second operand 7 states and 3836 transitions. [2022-11-20 11:01:42,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 583 transitions, 1402 flow [2022-11-20 11:01:42,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 583 transitions, 1390 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:01:42,547 INFO L231 Difference]: Finished difference. Result has 579 places, 580 transitions, 1314 flow [2022-11-20 11:01:42,548 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1314, PETRI_PLACES=579, PETRI_TRANSITIONS=580} [2022-11-20 11:01:42,548 INFO L288 CegarLoopForPetriNet]: 571 programPoint places, 8 predicate places. [2022-11-20 11:01:42,548 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 580 transitions, 1314 flow [2022-11-20 11:01:42,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 544.6666666666666) internal successors, (3268), 6 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:42,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:01:42,550 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:42,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:01:42,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:42,756 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-20 11:01:42,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:42,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1051478605, now seen corresponding path program 1 times [2022-11-20 11:01:42,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:42,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605886001] [2022-11-20 11:01:42,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:42,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:42,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:42,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:42,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605886001] [2022-11-20 11:01:42,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605886001] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:01:42,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332011062] [2022-11-20 11:01:42,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:42,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:42,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:01:42,878 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:01:42,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:01:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:43,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:01:43,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:43,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:01:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:43,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332011062] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:01:43,202 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:01:43,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:01:43,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023141610] [2022-11-20 11:01:43,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:01:43,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:01:43,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:43,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:01:43,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:01:43,211 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 542 out of 634 [2022-11-20 11:01:43,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 580 transitions, 1314 flow. Second operand has 10 states, 10 states have (on average 545.0) internal successors, (5450), 10 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:43,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:01:43,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 542 of 634 [2022-11-20 11:01:43,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:01:48,429 INFO L130 PetriNetUnfolder]: 1826/10995 cut-off events. [2022-11-20 11:01:48,429 INFO L131 PetriNetUnfolder]: For 6300/6960 co-relation queries the response was YES. [2022-11-20 11:01:48,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15243 conditions, 10995 events. 1826/10995 cut-off events. For 6300/6960 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 111149 event pairs, 410 based on Foata normal form. 10/9360 useless extension candidates. Maximal degree in co-relation 8047. Up to 2064 conditions per place. [2022-11-20 11:01:49,003 INFO L137 encePairwiseOnDemand]: 628/634 looper letters, 40 selfloop transitions, 9 changer transitions 0/591 dead transitions. [2022-11-20 11:01:49,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 591 transitions, 1450 flow [2022-11-20 11:01:49,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:01:49,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:01:49,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4929 transitions. [2022-11-20 11:01:49,014 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8638275499474237 [2022-11-20 11:01:49,014 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4929 transitions. [2022-11-20 11:01:49,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4929 transitions. [2022-11-20 11:01:49,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:01:49,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4929 transitions. [2022-11-20 11:01:49,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 547.6666666666666) internal successors, (4929), 9 states have internal predecessors, (4929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:49,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 634.0) internal successors, (6340), 10 states have internal predecessors, (6340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:49,042 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 634.0) internal successors, (6340), 10 states have internal predecessors, (6340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:49,043 INFO L175 Difference]: Start difference. First operand has 579 places, 580 transitions, 1314 flow. Second operand 9 states and 4929 transitions. [2022-11-20 11:01:49,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 591 transitions, 1450 flow [2022-11-20 11:01:49,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 591 transitions, 1437 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-20 11:01:49,059 INFO L231 Difference]: Finished difference. Result has 586 places, 584 transitions, 1361 flow [2022-11-20 11:01:49,060 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1361, PETRI_PLACES=586, PETRI_TRANSITIONS=584} [2022-11-20 11:01:49,061 INFO L288 CegarLoopForPetriNet]: 571 programPoint places, 15 predicate places. [2022-11-20 11:01:49,061 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 584 transitions, 1361 flow [2022-11-20 11:01:49,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 545.0) internal successors, (5450), 10 states have internal predecessors, (5450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:49,063 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:01:49,063 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:49,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:01:49,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631b3ed9-430b-475d-9168-0045471cfd0b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:01:49,269 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-20 11:01:49,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:49,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1714207090, now seen corresponding path program 1 times [2022-11-20 11:01:49,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:49,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802389191] [2022-11-20 11:01:49,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:49,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:49,391 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-20 11:01:49,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:49,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802389191] [2022-11-20 11:01:49,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802389191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:49,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:01:49,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:01:49,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224869373] [2022-11-20 11:01:49,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:49,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:01:49,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:49,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:01:49,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:01:49,397 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 542 out of 634 [2022-11-20 11:01:49,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 584 transitions, 1361 flow. Second operand has 4 states, 4 states have (on average 544.5) internal successors, (2178), 4 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:49,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:01:49,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 542 of 634 [2022-11-20 11:01:49,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:01:54,910 INFO L130 PetriNetUnfolder]: 1824/10987 cut-off events. [2022-11-20 11:01:54,910 INFO L131 PetriNetUnfolder]: For 6417/8359 co-relation queries the response was YES. [2022-11-20 11:01:55,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15307 conditions, 10987 events. 1824/10987 cut-off events. For 6417/8359 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 111777 event pairs, 424 based on Foata normal form. 18/9369 useless extension candidates. Maximal degree in co-relation 8068. Up to 2128 conditions per place. [2022-11-20 11:01:55,555 INFO L137 encePairwiseOnDemand]: 627/634 looper letters, 39 selfloop transitions, 4 changer transitions 0/591 dead transitions. [2022-11-20 11:01:55,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 591 transitions, 1461 flow [2022-11-20 11:01:55,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:01:55,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:01:55,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2756 transitions. [2022-11-20 11:01:55,563 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8694006309148264 [2022-11-20 11:01:55,563 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2756 transitions. [2022-11-20 11:01:55,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2756 transitions. [2022-11-20 11:01:55,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:01:55,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2756 transitions. [2022-11-20 11:01:55,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 551.2) internal successors, (2756), 5 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:55,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 634.0) internal successors, (3804), 6 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:55,582 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 634.0) internal successors, (3804), 6 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:55,583 INFO L175 Difference]: Start difference. First operand has 586 places, 584 transitions, 1361 flow. Second operand 5 states and 2756 transitions. [2022-11-20 11:01:55,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 591 transitions, 1461 flow [2022-11-20 11:01:55,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 591 transitions, 1447 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-20 11:01:55,600 INFO L231 Difference]: Finished difference. Result has 589 places, 587 transitions, 1379 flow [2022-11-20 11:01:55,601 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=634, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1379, PETRI_PLACES=589, PETRI_TRANSITIONS=587} [2022-11-20 11:01:55,602 INFO L288 CegarLoopForPetriNet]: 571 programPoint places, 18 predicate places. [2022-11-20 11:01:55,602 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 587 transitions, 1379 flow [2022-11-20 11:01:55,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 544.5) internal successors, (2178), 4 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:55,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:01:55,604 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:55,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:01:55,604 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-20 11:01:55,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:55,605 INFO L85 PathProgramCache]: Analyzing trace with hash 359244294, now seen corresponding path program 1 times [2022-11-20 11:01:55,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:55,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219523303] [2022-11-20 11:01:55,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:55,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:01:55,664 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:01:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:01:55,729 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:01:55,729 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:01:55,730 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 30 remaining) [2022-11-20 11:01:55,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 30 remaining) [2022-11-20 11:01:55,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 30 remaining) [2022-11-20 11:01:55,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 30 remaining) [2022-11-20 11:01:55,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 30 remaining) [2022-11-20 11:01:55,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 30 remaining) [2022-11-20 11:01:55,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 30 remaining) [2022-11-20 11:01:55,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 30 remaining) [2022-11-20 11:01:55,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 30 remaining) [2022-11-20 11:01:55,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 30 remaining) [2022-11-20 11:01:55,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 30 remaining) [2022-11-20 11:01:55,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 30 remaining) [2022-11-20 11:01:55,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 30 remaining) [2022-11-20 11:01:55,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 30 remaining) [2022-11-20 11:01:55,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 30 remaining) [2022-11-20 11:01:55,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 30 remaining) [2022-11-20 11:01:55,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 30 remaining) [2022-11-20 11:01:55,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 30 remaining) [2022-11-20 11:01:55,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 30 remaining) [2022-11-20 11:01:55,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 30 remaining) [2022-11-20 11:01:55,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 30 remaining) [2022-11-20 11:01:55,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 30 remaining) [2022-11-20 11:01:55,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 30 remaining) [2022-11-20 11:01:55,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 30 remaining) [2022-11-20 11:01:55,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 30 remaining) [2022-11-20 11:01:55,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 30 remaining) [2022-11-20 11:01:55,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 30 remaining) [2022-11-20 11:01:55,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 30 remaining) [2022-11-20 11:01:55,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 30 remaining) [2022-11-20 11:01:55,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 30 remaining) [2022-11-20 11:01:55,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:01:55,737 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-20 11:01:55,738 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:01:55,738 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-20 11:01:55,886 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions.