./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-match-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_18749b61-1bd9-40d7-88e1-34047c3f4e86/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18749b61-1bd9-40d7-88e1-34047c3f4e86/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18749b61-1bd9-40d7-88e1-34047c3f4e86/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18749b61-1bd9-40d7-88e1-34047c3f4e86/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-match-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18749b61-1bd9-40d7-88e1-34047c3f4e86/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18749b61-1bd9-40d7-88e1-34047c3f4e86/bin/uautomizer-TMbwUNV5ro --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 4221a6bcee4165c3049aa9b16a70613c9e290b9c0a4ff35026a6f2dcff16f9ff --- 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-8393723 [2022-11-18 19:47:08,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:47:08,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:47:08,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:47:08,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:47:08,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:47:08,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:47:08,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:47:08,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:47:08,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:47:08,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:47:08,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:47:08,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:47:08,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:47:08,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:47:08,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:47:08,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:47:08,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:47:08,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:47:08,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:47:08,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:47:08,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:47:08,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:47:08,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:47:08,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:47:08,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:47:08,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:47:08,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:47:08,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:47:08,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:47:08,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:47:08,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:47:08,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:47:08,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:47:08,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:47:08,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:47:08,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:47:08,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:47:08,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:47:08,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:47:08,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:47:08,161 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18749b61-1bd9-40d7-88e1-34047c3f4e86/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:47:08,200 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:47:08,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:47:08,201 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:47:08,201 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:47:08,202 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:47:08,203 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:47:08,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:47:08,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:47:08,204 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:47:08,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:47:08,205 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:47:08,206 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:47:08,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:47:08,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:47:08,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:47:08,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:47:08,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:47:08,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:47:08,207 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:47:08,207 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:47:08,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:47:08,208 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:47:08,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:47:08,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:47:08,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:47:08,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:47:08,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:47:08,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:47:08,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:47:08,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:47:08,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:47:08,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:47:08,210 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:47:08,211 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:47:08,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:47:08,211 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_18749b61-1bd9-40d7-88e1-34047c3f4e86/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18749b61-1bd9-40d7-88e1-34047c3f4e86/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4221a6bcee4165c3049aa9b16a70613c9e290b9c0a4ff35026a6f2dcff16f9ff [2022-11-18 19:47:08,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:47:08,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:47:08,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:47:08,583 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:47:08,583 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:47:08,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18749b61-1bd9-40d7-88e1-34047c3f4e86/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-match-trans.wvr.c [2022-11-18 19:47:08,666 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18749b61-1bd9-40d7-88e1-34047c3f4e86/bin/uautomizer-TMbwUNV5ro/data/28b599ac6/3563503c1b834bb6b7ffab9dbf865690/FLAG473d3e3b6 [2022-11-18 19:47:09,174 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:47:09,177 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18749b61-1bd9-40d7-88e1-34047c3f4e86/sv-benchmarks/c/weaver/chl-match-trans.wvr.c [2022-11-18 19:47:09,185 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18749b61-1bd9-40d7-88e1-34047c3f4e86/bin/uautomizer-TMbwUNV5ro/data/28b599ac6/3563503c1b834bb6b7ffab9dbf865690/FLAG473d3e3b6 [2022-11-18 19:47:09,537 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18749b61-1bd9-40d7-88e1-34047c3f4e86/bin/uautomizer-TMbwUNV5ro/data/28b599ac6/3563503c1b834bb6b7ffab9dbf865690 [2022-11-18 19:47:09,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:47:09,541 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:47:09,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:47:09,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:47:09,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:47:09,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:47:09" (1/1) ... [2022-11-18 19:47:09,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47bd4931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:47:09, skipping insertion in model container [2022-11-18 19:47:09,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:47:09" (1/1) ... [2022-11-18 19:47:09,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:47:09,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:47:09,781 WARN L234 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_18749b61-1bd9-40d7-88e1-34047c3f4e86/sv-benchmarks/c/weaver/chl-match-trans.wvr.c[2954,2967] [2022-11-18 19:47:09,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:47:09,794 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:47:09,820 WARN L234 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_18749b61-1bd9-40d7-88e1-34047c3f4e86/sv-benchmarks/c/weaver/chl-match-trans.wvr.c[2954,2967] [2022-11-18 19:47:09,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:47:09,836 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:47:09,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:47:09 WrapperNode [2022-11-18 19:47:09,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:47:09,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:47:09,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:47:09,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:47:09,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:47:09" (1/1) ... [2022-11-18 19:47:09,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:47:09" (1/1) ... [2022-11-18 19:47:09,885 INFO L138 Inliner]: procedures = 23, calls = 33, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 286 [2022-11-18 19:47:09,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:47:09,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:47:09,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:47:09,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:47:09,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:47:09" (1/1) ... [2022-11-18 19:47:09,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:47:09" (1/1) ... [2022-11-18 19:47:09,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:47:09" (1/1) ... [2022-11-18 19:47:09,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:47:09" (1/1) ... [2022-11-18 19:47:09,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:47:09" (1/1) ... [2022-11-18 19:47:09,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:47:09" (1/1) ... [2022-11-18 19:47:09,927 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:47:09" (1/1) ... [2022-11-18 19:47:09,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:47:09" (1/1) ... [2022-11-18 19:47:09,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:47:09,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:47:09,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:47:09,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:47:09,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:47:09" (1/1) ... [2022-11-18 19:47:09,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:47:09,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18749b61-1bd9-40d7-88e1-34047c3f4e86/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:09,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18749b61-1bd9-40d7-88e1-34047c3f4e86/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:47:10,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18749b61-1bd9-40d7-88e1-34047c3f4e86/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:47:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:47:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:47:10,037 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:47:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:47:10,037 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:47:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 19:47:10,039 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 19:47:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:47:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:47:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:47:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:47:10,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:47:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:47:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:47:10,042 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:47:10,197 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:47:10,199 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:47:10,846 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:47:10,860 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:47:10,861 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 19:47:10,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:47:10 BoogieIcfgContainer [2022-11-18 19:47:10,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:47:10,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:47:10,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:47:10,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:47:10,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:47:09" (1/3) ... [2022-11-18 19:47:10,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661ffc9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:47:10, skipping insertion in model container [2022-11-18 19:47:10,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:47:09" (2/3) ... [2022-11-18 19:47:10,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661ffc9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:47:10, skipping insertion in model container [2022-11-18 19:47:10,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:47:10" (3/3) ... [2022-11-18 19:47:10,882 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-trans.wvr.c [2022-11-18 19:47:10,892 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:47:10,903 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:47:10,903 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-11-18 19:47:10,903 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:47:11,141 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 19:47:11,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 397 places, 412 transitions, 848 flow [2022-11-18 19:47:11,433 INFO L130 PetriNetUnfolder]: 25/409 cut-off events. [2022-11-18 19:47:11,434 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 19:47:11,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 409 events. 25/409 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 948 event pairs, 0 based on Foata normal form. 0/348 useless extension candidates. Maximal degree in co-relation 328. Up to 2 conditions per place. [2022-11-18 19:47:11,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 397 places, 412 transitions, 848 flow [2022-11-18 19:47:11,467 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 388 transitions, 791 flow [2022-11-18 19:47:11,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:47:11,485 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;@516cb2c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:47:11,485 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2022-11-18 19:47:11,498 INFO L130 PetriNetUnfolder]: 0/77 cut-off events. [2022-11-18 19:47:11,499 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:47:11,499 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:11,500 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:11,500 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:11,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:11,506 INFO L85 PathProgramCache]: Analyzing trace with hash 342507580, now seen corresponding path program 1 times [2022-11-18 19:47:11,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:11,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335325788] [2022-11-18 19:47:11,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:11,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:12,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:12,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:12,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335325788] [2022-11-18 19:47:12,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335325788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:12,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:12,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:47:12,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593774889] [2022-11-18 19:47:12,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:12,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:47:12,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:12,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:47:12,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:47:12,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-18 19:47:12,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 388 transitions, 791 flow. Second operand has 6 states, 6 states have (on average 347.8333333333333) internal successors, (2087), 6 states have internal predecessors, (2087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:12,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:12,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-18 19:47:12,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:12,806 INFO L130 PetriNetUnfolder]: 147/895 cut-off events. [2022-11-18 19:47:12,806 INFO L131 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2022-11-18 19:47:12,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1398 conditions, 895 events. 147/895 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5074 event pairs, 41 based on Foata normal form. 474/1239 useless extension candidates. Maximal degree in co-relation 1279. Up to 113 conditions per place. [2022-11-18 19:47:12,841 INFO L137 encePairwiseOnDemand]: 390/412 looper letters, 57 selfloop transitions, 9 changer transitions 0/391 dead transitions. [2022-11-18 19:47:12,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 391 transitions, 953 flow [2022-11-18 19:47:12,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:47:12,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:47:12,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2526 transitions. [2022-11-18 19:47:12,869 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.875866851595007 [2022-11-18 19:47:12,870 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2526 transitions. [2022-11-18 19:47:12,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2526 transitions. [2022-11-18 19:47:12,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:12,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2526 transitions. [2022-11-18 19:47:12,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 360.85714285714283) internal successors, (2526), 7 states have internal predecessors, (2526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:12,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:12,906 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:12,908 INFO L175 Difference]: Start difference. First operand has 374 places, 388 transitions, 791 flow. Second operand 7 states and 2526 transitions. [2022-11-18 19:47:12,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 391 transitions, 953 flow [2022-11-18 19:47:12,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 391 transitions, 931 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:47:12,926 INFO L231 Difference]: Finished difference. Result has 374 places, 375 transitions, 774 flow [2022-11-18 19:47:12,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=774, PETRI_PLACES=374, PETRI_TRANSITIONS=375} [2022-11-18 19:47:12,932 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 0 predicate places. [2022-11-18 19:47:12,933 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 375 transitions, 774 flow [2022-11-18 19:47:12,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 347.8333333333333) internal successors, (2087), 6 states have internal predecessors, (2087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:12,935 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:12,935 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:12,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:47:12,936 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:12,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:12,937 INFO L85 PathProgramCache]: Analyzing trace with hash 2027801358, now seen corresponding path program 1 times [2022-11-18 19:47:12,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:12,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448430681] [2022-11-18 19:47:12,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:12,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:13,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:13,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:13,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448430681] [2022-11-18 19:47:13,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448430681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:13,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:13,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:47:13,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354354503] [2022-11-18 19:47:13,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:13,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:47:13,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:13,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:47:13,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:47:13,132 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-18 19:47:13,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 375 transitions, 774 flow. Second operand has 4 states, 4 states have (on average 347.75) internal successors, (1391), 4 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:13,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:13,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-18 19:47:13,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:13,588 INFO L130 PetriNetUnfolder]: 146/961 cut-off events. [2022-11-18 19:47:13,589 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-18 19:47:13,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 961 events. 146/961 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6031 event pairs, 60 based on Foata normal form. 6/838 useless extension candidates. Maximal degree in co-relation 887. Up to 164 conditions per place. [2022-11-18 19:47:13,623 INFO L137 encePairwiseOnDemand]: 399/412 looper letters, 64 selfloop transitions, 9 changer transitions 0/398 dead transitions. [2022-11-18 19:47:13,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 398 transitions, 974 flow [2022-11-18 19:47:13,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:47:13,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:47:13,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1461 transitions. [2022-11-18 19:47:13,628 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8865291262135923 [2022-11-18 19:47:13,628 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1461 transitions. [2022-11-18 19:47:13,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1461 transitions. [2022-11-18 19:47:13,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:13,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1461 transitions. [2022-11-18 19:47:13,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 365.25) internal successors, (1461), 4 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:13,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:13,638 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:13,639 INFO L175 Difference]: Start difference. First operand has 374 places, 375 transitions, 774 flow. Second operand 4 states and 1461 transitions. [2022-11-18 19:47:13,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 398 transitions, 974 flow [2022-11-18 19:47:13,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 398 transitions, 956 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 19:47:13,652 INFO L231 Difference]: Finished difference. Result has 372 places, 378 transitions, 812 flow [2022-11-18 19:47:13,653 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=812, PETRI_PLACES=372, PETRI_TRANSITIONS=378} [2022-11-18 19:47:13,654 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, -2 predicate places. [2022-11-18 19:47:13,654 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 378 transitions, 812 flow [2022-11-18 19:47:13,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 347.75) internal successors, (1391), 4 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:13,655 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:13,656 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:13,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:47:13,656 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:13,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:13,658 INFO L85 PathProgramCache]: Analyzing trace with hash 2138789822, now seen corresponding path program 1 times [2022-11-18 19:47:13,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:13,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575098122] [2022-11-18 19:47:13,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:13,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:13,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:13,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:13,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575098122] [2022-11-18 19:47:13,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575098122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:13,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:13,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:47:13,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344188201] [2022-11-18 19:47:13,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:13,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:47:13,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:13,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:47:13,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:47:13,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-18 19:47:13,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 378 transitions, 812 flow. Second operand has 6 states, 6 states have (on average 348.0) internal successors, (2088), 6 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:13,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:13,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-18 19:47:13,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:14,739 INFO L130 PetriNetUnfolder]: 437/2488 cut-off events. [2022-11-18 19:47:14,740 INFO L131 PetriNetUnfolder]: For 99/213 co-relation queries the response was YES. [2022-11-18 19:47:14,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3534 conditions, 2488 events. 437/2488 cut-off events. For 99/213 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 22821 event pairs, 39 based on Foata normal form. 3/1958 useless extension candidates. Maximal degree in co-relation 1792. Up to 271 conditions per place. [2022-11-18 19:47:14,822 INFO L137 encePairwiseOnDemand]: 402/412 looper letters, 56 selfloop transitions, 9 changer transitions 0/392 dead transitions. [2022-11-18 19:47:14,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 392 transitions, 980 flow [2022-11-18 19:47:14,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:47:14,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:47:14,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2488 transitions. [2022-11-18 19:47:14,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8626907073509015 [2022-11-18 19:47:14,830 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2488 transitions. [2022-11-18 19:47:14,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2488 transitions. [2022-11-18 19:47:14,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:14,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2488 transitions. [2022-11-18 19:47:14,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 355.42857142857144) internal successors, (2488), 7 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:14,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:14,917 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:14,917 INFO L175 Difference]: Start difference. First operand has 372 places, 378 transitions, 812 flow. Second operand 7 states and 2488 transitions. [2022-11-18 19:47:14,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 392 transitions, 980 flow [2022-11-18 19:47:14,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 392 transitions, 980 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:47:14,927 INFO L231 Difference]: Finished difference. Result has 377 places, 377 transitions, 828 flow [2022-11-18 19:47:14,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=828, PETRI_PLACES=377, PETRI_TRANSITIONS=377} [2022-11-18 19:47:14,929 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 3 predicate places. [2022-11-18 19:47:14,929 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 377 transitions, 828 flow [2022-11-18 19:47:14,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 348.0) internal successors, (2088), 6 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:14,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:14,932 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:14,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:47:14,932 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:14,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:14,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1877976115, now seen corresponding path program 1 times [2022-11-18 19:47:14,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:14,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921028597] [2022-11-18 19:47:14,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:14,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:15,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:15,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:15,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921028597] [2022-11-18 19:47:15,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921028597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:15,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:15,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:47:15,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858141087] [2022-11-18 19:47:15,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:15,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:47:15,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:15,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:47:15,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:47:15,028 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-18 19:47:15,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 377 transitions, 828 flow. Second operand has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:15,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:15,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-18 19:47:15,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:15,710 INFO L130 PetriNetUnfolder]: 214/1279 cut-off events. [2022-11-18 19:47:15,710 INFO L131 PetriNetUnfolder]: For 161/285 co-relation queries the response was YES. [2022-11-18 19:47:15,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1936 conditions, 1279 events. 214/1279 cut-off events. For 161/285 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10030 event pairs, 44 based on Foata normal form. 8/1020 useless extension candidates. Maximal degree in co-relation 1344. Up to 228 conditions per place. [2022-11-18 19:47:15,766 INFO L137 encePairwiseOnDemand]: 399/412 looper letters, 63 selfloop transitions, 9 changer transitions 0/399 dead transitions. [2022-11-18 19:47:15,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 399 transitions, 1023 flow [2022-11-18 19:47:15,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:47:15,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:47:15,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1460 transitions. [2022-11-18 19:47:15,770 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8859223300970874 [2022-11-18 19:47:15,770 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1460 transitions. [2022-11-18 19:47:15,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1460 transitions. [2022-11-18 19:47:15,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:15,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1460 transitions. [2022-11-18 19:47:15,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:15,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:15,785 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:15,786 INFO L175 Difference]: Start difference. First operand has 377 places, 377 transitions, 828 flow. Second operand 4 states and 1460 transitions. [2022-11-18 19:47:15,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 399 transitions, 1023 flow [2022-11-18 19:47:15,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 399 transitions, 1005 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 19:47:15,796 INFO L231 Difference]: Finished difference. Result has 375 places, 380 transitions, 866 flow [2022-11-18 19:47:15,798 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=866, PETRI_PLACES=375, PETRI_TRANSITIONS=380} [2022-11-18 19:47:15,800 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 1 predicate places. [2022-11-18 19:47:15,800 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 380 transitions, 866 flow [2022-11-18 19:47:15,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:15,801 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:15,801 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:15,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:47:15,802 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:15,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:15,802 INFO L85 PathProgramCache]: Analyzing trace with hash -820186251, now seen corresponding path program 1 times [2022-11-18 19:47:15,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:15,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300368864] [2022-11-18 19:47:15,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:15,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:15,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:15,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:15,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300368864] [2022-11-18 19:47:15,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300368864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:15,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:15,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:47:15,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449651770] [2022-11-18 19:47:15,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:15,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:47:15,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:15,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:47:15,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:47:15,898 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-18 19:47:15,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 380 transitions, 866 flow. Second operand has 4 states, 4 states have (on average 348.25) internal successors, (1393), 4 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:15,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:15,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-18 19:47:15,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:16,321 INFO L130 PetriNetUnfolder]: 132/944 cut-off events. [2022-11-18 19:47:16,321 INFO L131 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2022-11-18 19:47:16,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1518 conditions, 944 events. 132/944 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5921 event pairs, 48 based on Foata normal form. 6/834 useless extension candidates. Maximal degree in co-relation 1350. Up to 130 conditions per place. [2022-11-18 19:47:16,362 INFO L137 encePairwiseOnDemand]: 403/412 looper letters, 64 selfloop transitions, 7 changer transitions 0/398 dead transitions. [2022-11-18 19:47:16,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 398 transitions, 1044 flow [2022-11-18 19:47:16,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:47:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:47:16,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1457 transitions. [2022-11-18 19:47:16,367 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8841019417475728 [2022-11-18 19:47:16,367 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1457 transitions. [2022-11-18 19:47:16,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1457 transitions. [2022-11-18 19:47:16,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:16,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1457 transitions. [2022-11-18 19:47:16,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 364.25) internal successors, (1457), 4 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:16,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:16,377 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:16,378 INFO L175 Difference]: Start difference. First operand has 375 places, 380 transitions, 866 flow. Second operand 4 states and 1457 transitions. [2022-11-18 19:47:16,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 398 transitions, 1044 flow [2022-11-18 19:47:16,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 398 transitions, 1039 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:47:16,388 INFO L231 Difference]: Finished difference. Result has 377 places, 378 transitions, 863 flow [2022-11-18 19:47:16,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=863, PETRI_PLACES=377, PETRI_TRANSITIONS=378} [2022-11-18 19:47:16,392 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 3 predicate places. [2022-11-18 19:47:16,393 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 378 transitions, 863 flow [2022-11-18 19:47:16,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 348.25) internal successors, (1393), 4 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:16,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:16,394 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:16,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:47:16,394 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:16,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:16,395 INFO L85 PathProgramCache]: Analyzing trace with hash 344030982, now seen corresponding path program 1 times [2022-11-18 19:47:16,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:16,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847669784] [2022-11-18 19:47:16,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:16,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:16,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:16,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:16,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847669784] [2022-11-18 19:47:16,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847669784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:16,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:16,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:47:16,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239721741] [2022-11-18 19:47:16,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:16,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:47:16,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:16,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:47:16,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:47:16,547 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-18 19:47:16,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 378 transitions, 863 flow. Second operand has 6 states, 6 states have (on average 348.1666666666667) internal successors, (2089), 6 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:16,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:16,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-18 19:47:16,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:17,215 INFO L130 PetriNetUnfolder]: 185/1621 cut-off events. [2022-11-18 19:47:17,215 INFO L131 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2022-11-18 19:47:17,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2292 conditions, 1621 events. 185/1621 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 11504 event pairs, 49 based on Foata normal form. 0/1400 useless extension candidates. Maximal degree in co-relation 1956. Up to 180 conditions per place. [2022-11-18 19:47:17,273 INFO L137 encePairwiseOnDemand]: 402/412 looper letters, 47 selfloop transitions, 10 changer transitions 0/386 dead transitions. [2022-11-18 19:47:17,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 386 transitions, 1002 flow [2022-11-18 19:47:17,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:47:17,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:47:17,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2479 transitions. [2022-11-18 19:47:17,279 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595700416088765 [2022-11-18 19:47:17,279 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2479 transitions. [2022-11-18 19:47:17,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2479 transitions. [2022-11-18 19:47:17,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:17,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2479 transitions. [2022-11-18 19:47:17,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.14285714285717) internal successors, (2479), 7 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:17,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:17,293 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:17,293 INFO L175 Difference]: Start difference. First operand has 377 places, 378 transitions, 863 flow. Second operand 7 states and 2479 transitions. [2022-11-18 19:47:17,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 386 transitions, 1002 flow [2022-11-18 19:47:17,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 386 transitions, 991 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:47:17,301 INFO L231 Difference]: Finished difference. Result has 380 places, 377 transitions, 870 flow [2022-11-18 19:47:17,302 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=870, PETRI_PLACES=380, PETRI_TRANSITIONS=377} [2022-11-18 19:47:17,305 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 6 predicate places. [2022-11-18 19:47:17,305 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 377 transitions, 870 flow [2022-11-18 19:47:17,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 348.1666666666667) internal successors, (2089), 6 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:17,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:17,323 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:17,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:47:17,323 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:17,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:17,324 INFO L85 PathProgramCache]: Analyzing trace with hash 776651785, now seen corresponding path program 1 times [2022-11-18 19:47:17,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:17,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968938130] [2022-11-18 19:47:17,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:17,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:17,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:17,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968938130] [2022-11-18 19:47:17,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968938130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:17,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:17,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:47:17,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172639673] [2022-11-18 19:47:17,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:17,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:47:17,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:17,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:47:17,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:47:17,422 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-18 19:47:17,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 377 transitions, 870 flow. Second operand has 4 states, 4 states have (on average 348.5) internal successors, (1394), 4 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:17,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:17,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-18 19:47:17,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:17,956 INFO L130 PetriNetUnfolder]: 163/1107 cut-off events. [2022-11-18 19:47:17,956 INFO L131 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2022-11-18 19:47:17,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1839 conditions, 1107 events. 163/1107 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 7452 event pairs, 74 based on Foata normal form. 6/984 useless extension candidates. Maximal degree in co-relation 1663. Up to 201 conditions per place. [2022-11-18 19:47:18,005 INFO L137 encePairwiseOnDemand]: 403/412 looper letters, 60 selfloop transitions, 7 changer transitions 0/396 dead transitions. [2022-11-18 19:47:18,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 396 transitions, 1049 flow [2022-11-18 19:47:18,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:47:18,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:47:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1452 transitions. [2022-11-18 19:47:18,010 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8810679611650486 [2022-11-18 19:47:18,010 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1452 transitions. [2022-11-18 19:47:18,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1452 transitions. [2022-11-18 19:47:18,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:18,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1452 transitions. [2022-11-18 19:47:18,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:18,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:18,020 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:18,020 INFO L175 Difference]: Start difference. First operand has 380 places, 377 transitions, 870 flow. Second operand 4 states and 1452 transitions. [2022-11-18 19:47:18,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 396 transitions, 1049 flow [2022-11-18 19:47:18,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 396 transitions, 1024 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 19:47:18,030 INFO L231 Difference]: Finished difference. Result has 376 places, 378 transitions, 875 flow [2022-11-18 19:47:18,031 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=875, PETRI_PLACES=376, PETRI_TRANSITIONS=378} [2022-11-18 19:47:18,032 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 2 predicate places. [2022-11-18 19:47:18,032 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 378 transitions, 875 flow [2022-11-18 19:47:18,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 348.5) internal successors, (1394), 4 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:18,033 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:18,033 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:18,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:47:18,034 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:18,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:18,034 INFO L85 PathProgramCache]: Analyzing trace with hash -522274800, now seen corresponding path program 1 times [2022-11-18 19:47:18,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:18,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154392592] [2022-11-18 19:47:18,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:18,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:18,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:18,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:18,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154392592] [2022-11-18 19:47:18,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154392592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:18,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:18,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:47:18,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619377049] [2022-11-18 19:47:18,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:18,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:47:18,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:18,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:47:18,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:47:18,171 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-18 19:47:18,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 378 transitions, 875 flow. Second operand has 6 states, 6 states have (on average 348.1666666666667) internal successors, (2089), 6 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:18,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:18,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-18 19:47:18,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:19,284 INFO L130 PetriNetUnfolder]: 460/3038 cut-off events. [2022-11-18 19:47:19,284 INFO L131 PetriNetUnfolder]: For 435/435 co-relation queries the response was YES. [2022-11-18 19:47:19,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4212 conditions, 3038 events. 460/3038 cut-off events. For 435/435 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 28359 event pairs, 126 based on Foata normal form. 0/2426 useless extension candidates. Maximal degree in co-relation 3627. Up to 337 conditions per place. [2022-11-18 19:47:19,385 INFO L137 encePairwiseOnDemand]: 402/412 looper letters, 55 selfloop transitions, 9 changer transitions 0/391 dead transitions. [2022-11-18 19:47:19,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 391 transitions, 1035 flow [2022-11-18 19:47:19,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:47:19,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:47:19,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2487 transitions. [2022-11-18 19:47:19,391 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8623439667128987 [2022-11-18 19:47:19,391 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2487 transitions. [2022-11-18 19:47:19,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2487 transitions. [2022-11-18 19:47:19,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:19,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2487 transitions. [2022-11-18 19:47:19,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 355.2857142857143) internal successors, (2487), 7 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:19,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:19,403 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:19,404 INFO L175 Difference]: Start difference. First operand has 376 places, 378 transitions, 875 flow. Second operand 7 states and 2487 transitions. [2022-11-18 19:47:19,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 391 transitions, 1035 flow [2022-11-18 19:47:19,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 391 transitions, 1030 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:47:19,412 INFO L231 Difference]: Finished difference. Result has 380 places, 377 transitions, 886 flow [2022-11-18 19:47:19,412 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=886, PETRI_PLACES=380, PETRI_TRANSITIONS=377} [2022-11-18 19:47:19,413 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 6 predicate places. [2022-11-18 19:47:19,413 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 377 transitions, 886 flow [2022-11-18 19:47:19,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 348.1666666666667) internal successors, (2089), 6 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:19,414 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:19,414 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:19,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:47:19,415 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:19,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:19,415 INFO L85 PathProgramCache]: Analyzing trace with hash 989351560, now seen corresponding path program 1 times [2022-11-18 19:47:19,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:19,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479807595] [2022-11-18 19:47:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:19,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:19,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:19,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:19,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479807595] [2022-11-18 19:47:19,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479807595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:19,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:19,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:47:19,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321569006] [2022-11-18 19:47:19,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:19,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:47:19,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:19,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:47:19,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:47:19,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-18 19:47:19,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 377 transitions, 886 flow. Second operand has 4 states, 4 states have (on average 348.25) internal successors, (1393), 4 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:19,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:19,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-18 19:47:19,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:20,501 INFO L130 PetriNetUnfolder]: 614/2844 cut-off events. [2022-11-18 19:47:20,501 INFO L131 PetriNetUnfolder]: For 639/645 co-relation queries the response was YES. [2022-11-18 19:47:20,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4233 conditions, 2844 events. 614/2844 cut-off events. For 639/645 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 31597 event pairs, 270 based on Foata normal form. 20/2167 useless extension candidates. Maximal degree in co-relation 4143. Up to 603 conditions per place. [2022-11-18 19:47:20,551 INFO L137 encePairwiseOnDemand]: 399/412 looper letters, 62 selfloop transitions, 9 changer transitions 0/398 dead transitions. [2022-11-18 19:47:20,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 398 transitions, 1074 flow [2022-11-18 19:47:20,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:47:20,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:47:20,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1459 transitions. [2022-11-18 19:47:20,562 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8853155339805825 [2022-11-18 19:47:20,563 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1459 transitions. [2022-11-18 19:47:20,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1459 transitions. [2022-11-18 19:47:20,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:20,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1459 transitions. [2022-11-18 19:47:20,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 364.75) internal successors, (1459), 4 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:20,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:20,580 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:20,580 INFO L175 Difference]: Start difference. First operand has 380 places, 377 transitions, 886 flow. Second operand 4 states and 1459 transitions. [2022-11-18 19:47:20,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 398 transitions, 1074 flow [2022-11-18 19:47:20,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 398 transitions, 1056 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 19:47:20,589 INFO L231 Difference]: Finished difference. Result has 378 places, 380 transitions, 924 flow [2022-11-18 19:47:20,589 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=924, PETRI_PLACES=378, PETRI_TRANSITIONS=380} [2022-11-18 19:47:20,590 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 4 predicate places. [2022-11-18 19:47:20,591 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 380 transitions, 924 flow [2022-11-18 19:47:20,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 348.25) internal successors, (1393), 4 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:20,591 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:20,592 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:20,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:47:20,592 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:20,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:20,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1594080026, now seen corresponding path program 1 times [2022-11-18 19:47:20,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:20,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839292467] [2022-11-18 19:47:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:20,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:20,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:20,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:20,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839292467] [2022-11-18 19:47:20,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839292467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:20,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:20,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:47:20,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890135957] [2022-11-18 19:47:20,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:20,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:47:20,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:20,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:47:20,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:47:20,673 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-18 19:47:20,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 380 transitions, 924 flow. Second operand has 4 states, 4 states have (on average 348.5) internal successors, (1394), 4 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:20,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:20,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-18 19:47:20,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:21,560 INFO L130 PetriNetUnfolder]: 250/1491 cut-off events. [2022-11-18 19:47:21,560 INFO L131 PetriNetUnfolder]: For 322/496 co-relation queries the response was YES. [2022-11-18 19:47:21,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2328 conditions, 1491 events. 250/1491 cut-off events. For 322/496 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 12406 event pairs, 54 based on Foata normal form. 10/1183 useless extension candidates. Maximal degree in co-relation 2172. Up to 231 conditions per place. [2022-11-18 19:47:21,629 INFO L137 encePairwiseOnDemand]: 403/412 looper letters, 63 selfloop transitions, 7 changer transitions 0/397 dead transitions. [2022-11-18 19:47:21,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 397 transitions, 1097 flow [2022-11-18 19:47:21,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:47:21,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:47:21,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1456 transitions. [2022-11-18 19:47:21,634 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.883495145631068 [2022-11-18 19:47:21,635 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1456 transitions. [2022-11-18 19:47:21,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1456 transitions. [2022-11-18 19:47:21,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:21,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1456 transitions. [2022-11-18 19:47:21,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:21,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:21,645 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:21,645 INFO L175 Difference]: Start difference. First operand has 378 places, 380 transitions, 924 flow. Second operand 4 states and 1456 transitions. [2022-11-18 19:47:21,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 397 transitions, 1097 flow [2022-11-18 19:47:21,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 397 transitions, 1092 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:47:21,655 INFO L231 Difference]: Finished difference. Result has 380 places, 378 transitions, 921 flow [2022-11-18 19:47:21,656 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=921, PETRI_PLACES=380, PETRI_TRANSITIONS=378} [2022-11-18 19:47:21,657 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 6 predicate places. [2022-11-18 19:47:21,657 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 378 transitions, 921 flow [2022-11-18 19:47:21,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 348.5) internal successors, (1394), 4 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:21,658 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:21,658 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:21,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:47:21,658 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:21,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:21,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1694322091, now seen corresponding path program 1 times [2022-11-18 19:47:21,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:21,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795389919] [2022-11-18 19:47:21,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:21,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:21,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:21,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795389919] [2022-11-18 19:47:21,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795389919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:21,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:21,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:47:21,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74366137] [2022-11-18 19:47:21,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:21,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:47:21,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:21,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:47:21,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:47:21,817 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-18 19:47:21,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 378 transitions, 921 flow. Second operand has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:21,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:21,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-18 19:47:21,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:22,672 INFO L130 PetriNetUnfolder]: 259/1487 cut-off events. [2022-11-18 19:47:22,673 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-11-18 19:47:22,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2525 conditions, 1487 events. 259/1487 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10666 event pairs, 60 based on Foata normal form. 0/1345 useless extension candidates. Maximal degree in co-relation 2369. Up to 155 conditions per place. [2022-11-18 19:47:22,708 INFO L137 encePairwiseOnDemand]: 397/412 looper letters, 67 selfloop transitions, 16 changer transitions 0/402 dead transitions. [2022-11-18 19:47:22,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 402 transitions, 1156 flow [2022-11-18 19:47:22,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:47:22,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:47:22,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3778 transitions. [2022-11-18 19:47:22,717 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8336275375110327 [2022-11-18 19:47:22,717 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3778 transitions. [2022-11-18 19:47:22,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3778 transitions. [2022-11-18 19:47:22,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:22,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3778 transitions. [2022-11-18 19:47:22,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.45454545454544) internal successors, (3778), 11 states have internal predecessors, (3778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:22,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:22,738 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:22,738 INFO L175 Difference]: Start difference. First operand has 380 places, 378 transitions, 921 flow. Second operand 11 states and 3778 transitions. [2022-11-18 19:47:22,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 402 transitions, 1156 flow [2022-11-18 19:47:22,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 402 transitions, 1145 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:47:22,747 INFO L231 Difference]: Finished difference. Result has 390 places, 379 transitions, 955 flow [2022-11-18 19:47:22,747 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=955, PETRI_PLACES=390, PETRI_TRANSITIONS=379} [2022-11-18 19:47:22,748 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 16 predicate places. [2022-11-18 19:47:22,748 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 379 transitions, 955 flow [2022-11-18 19:47:22,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:22,749 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:22,750 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:22,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:47:22,750 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:22,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:22,751 INFO L85 PathProgramCache]: Analyzing trace with hash -2123125656, now seen corresponding path program 1 times [2022-11-18 19:47:22,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:22,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926831261] [2022-11-18 19:47:22,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:22,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:22,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:22,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926831261] [2022-11-18 19:47:22,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926831261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:22,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:22,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:47:22,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563481326] [2022-11-18 19:47:22,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:22,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:47:22,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:22,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:47:22,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:47:22,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-18 19:47:22,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 379 transitions, 955 flow. Second operand has 6 states, 6 states have (on average 348.3333333333333) internal successors, (2090), 6 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:22,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:22,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-18 19:47:22,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:24,256 INFO L130 PetriNetUnfolder]: 710/4612 cut-off events. [2022-11-18 19:47:24,256 INFO L131 PetriNetUnfolder]: For 688/1287 co-relation queries the response was YES. [2022-11-18 19:47:24,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7375 conditions, 4612 events. 710/4612 cut-off events. For 688/1287 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 50049 event pairs, 82 based on Foata normal form. 5/3773 useless extension candidates. Maximal degree in co-relation 5777. Up to 558 conditions per place. [2022-11-18 19:47:24,414 INFO L137 encePairwiseOnDemand]: 402/412 looper letters, 47 selfloop transitions, 10 changer transitions 0/387 dead transitions. [2022-11-18 19:47:24,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 387 transitions, 1103 flow [2022-11-18 19:47:24,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:47:24,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:47:24,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2479 transitions. [2022-11-18 19:47:24,420 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595700416088765 [2022-11-18 19:47:24,420 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2479 transitions. [2022-11-18 19:47:24,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2479 transitions. [2022-11-18 19:47:24,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:24,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2479 transitions. [2022-11-18 19:47:24,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.14285714285717) internal successors, (2479), 7 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:24,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:24,434 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:24,434 INFO L175 Difference]: Start difference. First operand has 390 places, 379 transitions, 955 flow. Second operand 7 states and 2479 transitions. [2022-11-18 19:47:24,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 387 transitions, 1103 flow [2022-11-18 19:47:24,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 387 transitions, 1073 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-18 19:47:24,444 INFO L231 Difference]: Finished difference. Result has 389 places, 378 transitions, 949 flow [2022-11-18 19:47:24,445 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=949, PETRI_PLACES=389, PETRI_TRANSITIONS=378} [2022-11-18 19:47:24,446 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 15 predicate places. [2022-11-18 19:47:24,446 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 378 transitions, 949 flow [2022-11-18 19:47:24,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 348.3333333333333) internal successors, (2090), 6 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:24,447 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:24,447 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:24,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:47:24,448 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:24,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:24,448 INFO L85 PathProgramCache]: Analyzing trace with hash 984378268, now seen corresponding path program 1 times [2022-11-18 19:47:24,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:24,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317756180] [2022-11-18 19:47:24,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:24,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:24,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:24,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:24,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317756180] [2022-11-18 19:47:24,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317756180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:24,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:24,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:47:24,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378804105] [2022-11-18 19:47:24,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:24,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:47:24,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:24,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:47:24,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:47:24,600 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-18 19:47:24,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 378 transitions, 949 flow. Second operand has 8 states, 8 states have (on average 338.125) internal successors, (2705), 8 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:24,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:24,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-18 19:47:24,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:25,469 INFO L130 PetriNetUnfolder]: 250/2273 cut-off events. [2022-11-18 19:47:25,469 INFO L131 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2022-11-18 19:47:25,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3418 conditions, 2273 events. 250/2273 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 18575 event pairs, 53 based on Foata normal form. 0/2029 useless extension candidates. Maximal degree in co-relation 2921. Up to 155 conditions per place. [2022-11-18 19:47:25,522 INFO L137 encePairwiseOnDemand]: 396/412 looper letters, 69 selfloop transitions, 17 changer transitions 0/404 dead transitions. [2022-11-18 19:47:25,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 404 transitions, 1201 flow [2022-11-18 19:47:25,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:47:25,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:47:25,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3780 transitions. [2022-11-18 19:47:25,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8340688437775816 [2022-11-18 19:47:25,531 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3780 transitions. [2022-11-18 19:47:25,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3780 transitions. [2022-11-18 19:47:25,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:25,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3780 transitions. [2022-11-18 19:47:25,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.6363636363636) internal successors, (3780), 11 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:25,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:25,550 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:25,550 INFO L175 Difference]: Start difference. First operand has 389 places, 378 transitions, 949 flow. Second operand 11 states and 3780 transitions. [2022-11-18 19:47:25,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 404 transitions, 1201 flow [2022-11-18 19:47:25,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 404 transitions, 1181 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 19:47:25,559 INFO L231 Difference]: Finished difference. Result has 395 places, 379 transitions, 976 flow [2022-11-18 19:47:25,560 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=976, PETRI_PLACES=395, PETRI_TRANSITIONS=379} [2022-11-18 19:47:25,561 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 21 predicate places. [2022-11-18 19:47:25,561 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 379 transitions, 976 flow [2022-11-18 19:47:25,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 338.125) internal successors, (2705), 8 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:25,562 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:25,562 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:25,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:47:25,563 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:25,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:25,563 INFO L85 PathProgramCache]: Analyzing trace with hash 661073355, now seen corresponding path program 1 times [2022-11-18 19:47:25,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:25,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098923323] [2022-11-18 19:47:25,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:25,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:25,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:25,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098923323] [2022-11-18 19:47:25,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098923323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:25,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:25,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:47:25,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109682181] [2022-11-18 19:47:25,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:25,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:47:25,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:25,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:47:25,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:47:25,631 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-18 19:47:25,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 379 transitions, 976 flow. Second operand has 4 states, 4 states have (on average 348.75) internal successors, (1395), 4 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:25,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:25,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-18 19:47:25,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:26,506 INFO L130 PetriNetUnfolder]: 313/1758 cut-off events. [2022-11-18 19:47:26,506 INFO L131 PetriNetUnfolder]: For 324/546 co-relation queries the response was YES. [2022-11-18 19:47:26,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2822 conditions, 1758 events. 313/1758 cut-off events. For 324/546 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 15659 event pairs, 148 based on Foata normal form. 10/1394 useless extension candidates. Maximal degree in co-relation 2662. Up to 356 conditions per place. [2022-11-18 19:47:26,604 INFO L137 encePairwiseOnDemand]: 403/412 looper letters, 59 selfloop transitions, 7 changer transitions 0/397 dead transitions. [2022-11-18 19:47:26,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 397 transitions, 1150 flow [2022-11-18 19:47:26,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:47:26,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:47:26,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1451 transitions. [2022-11-18 19:47:26,607 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8804611650485437 [2022-11-18 19:47:26,607 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1451 transitions. [2022-11-18 19:47:26,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1451 transitions. [2022-11-18 19:47:26,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:26,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1451 transitions. [2022-11-18 19:47:26,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 362.75) internal successors, (1451), 4 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:26,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:26,613 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:26,613 INFO L175 Difference]: Start difference. First operand has 395 places, 379 transitions, 976 flow. Second operand 4 states and 1451 transitions. [2022-11-18 19:47:26,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 397 transitions, 1150 flow [2022-11-18 19:47:26,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 397 transitions, 1120 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-18 19:47:26,624 INFO L231 Difference]: Finished difference. Result has 391 places, 380 transitions, 976 flow [2022-11-18 19:47:26,625 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=976, PETRI_PLACES=391, PETRI_TRANSITIONS=380} [2022-11-18 19:47:26,626 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 17 predicate places. [2022-11-18 19:47:26,626 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 380 transitions, 976 flow [2022-11-18 19:47:26,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 348.75) internal successors, (1395), 4 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:26,627 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:26,627 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:26,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:47:26,627 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:26,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:26,628 INFO L85 PathProgramCache]: Analyzing trace with hash 867689856, now seen corresponding path program 1 times [2022-11-18 19:47:26,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:26,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352299560] [2022-11-18 19:47:26,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:26,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:26,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:26,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:26,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352299560] [2022-11-18 19:47:26,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352299560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:26,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:26,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:47:26,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557149971] [2022-11-18 19:47:26,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:26,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:47:26,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:26,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:47:26,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:47:26,762 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 412 [2022-11-18 19:47:26,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 380 transitions, 976 flow. Second operand has 6 states, 6 states have (on average 329.3333333333333) internal successors, (1976), 6 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:26,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:26,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 412 [2022-11-18 19:47:26,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:27,539 INFO L130 PetriNetUnfolder]: 241/1280 cut-off events. [2022-11-18 19:47:27,539 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2022-11-18 19:47:27,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2509 conditions, 1280 events. 241/1280 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 9242 event pairs, 122 based on Foata normal form. 3/1175 useless extension candidates. Maximal degree in co-relation 2347. Up to 315 conditions per place. [2022-11-18 19:47:27,587 INFO L137 encePairwiseOnDemand]: 395/412 looper letters, 74 selfloop transitions, 17 changer transitions 0/400 dead transitions. [2022-11-18 19:47:27,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 400 transitions, 1212 flow [2022-11-18 19:47:27,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:47:27,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:47:27,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2372 transitions. [2022-11-18 19:47:27,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8224687933425797 [2022-11-18 19:47:27,594 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2372 transitions. [2022-11-18 19:47:27,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2372 transitions. [2022-11-18 19:47:27,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:27,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2372 transitions. [2022-11-18 19:47:27,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 338.85714285714283) internal successors, (2372), 7 states have internal predecessors, (2372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:27,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:27,608 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:27,608 INFO L175 Difference]: Start difference. First operand has 391 places, 380 transitions, 976 flow. Second operand 7 states and 2372 transitions. [2022-11-18 19:47:27,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 400 transitions, 1212 flow [2022-11-18 19:47:27,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 400 transitions, 1204 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:47:27,619 INFO L231 Difference]: Finished difference. Result has 399 places, 388 transitions, 1067 flow [2022-11-18 19:47:27,620 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1067, PETRI_PLACES=399, PETRI_TRANSITIONS=388} [2022-11-18 19:47:27,621 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 25 predicate places. [2022-11-18 19:47:27,621 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 388 transitions, 1067 flow [2022-11-18 19:47:27,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 329.3333333333333) internal successors, (1976), 6 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:27,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:27,622 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:27,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:47:27,623 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:27,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:27,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1855612976, now seen corresponding path program 1 times [2022-11-18 19:47:27,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:27,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347170897] [2022-11-18 19:47:27,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:27,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:27,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:27,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347170897] [2022-11-18 19:47:27,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347170897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:27,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:27,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:47:27,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609690459] [2022-11-18 19:47:27,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:27,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:47:27,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:27,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:47:27,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:47:27,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 412 [2022-11-18 19:47:27,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 388 transitions, 1067 flow. Second operand has 6 states, 6 states have (on average 329.5) internal successors, (1977), 6 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:27,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:27,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 412 [2022-11-18 19:47:27,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:28,598 INFO L130 PetriNetUnfolder]: 225/1258 cut-off events. [2022-11-18 19:47:28,599 INFO L131 PetriNetUnfolder]: For 325/325 co-relation queries the response was YES. [2022-11-18 19:47:28,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2610 conditions, 1258 events. 225/1258 cut-off events. For 325/325 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 9008 event pairs, 102 based on Foata normal form. 3/1192 useless extension candidates. Maximal degree in co-relation 2445. Up to 265 conditions per place. [2022-11-18 19:47:28,678 INFO L137 encePairwiseOnDemand]: 394/412 looper letters, 94 selfloop transitions, 20 changer transitions 0/423 dead transitions. [2022-11-18 19:47:28,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 423 transitions, 1424 flow [2022-11-18 19:47:28,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:47:28,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:47:28,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2386 transitions. [2022-11-18 19:47:28,685 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8273231622746186 [2022-11-18 19:47:28,685 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2386 transitions. [2022-11-18 19:47:28,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2386 transitions. [2022-11-18 19:47:28,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:28,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2386 transitions. [2022-11-18 19:47:28,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 340.85714285714283) internal successors, (2386), 7 states have internal predecessors, (2386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:28,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:28,699 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:28,700 INFO L175 Difference]: Start difference. First operand has 399 places, 388 transitions, 1067 flow. Second operand 7 states and 2386 transitions. [2022-11-18 19:47:28,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 423 transitions, 1424 flow [2022-11-18 19:47:28,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 423 transitions, 1412 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:47:28,714 INFO L231 Difference]: Finished difference. Result has 407 places, 399 transitions, 1193 flow [2022-11-18 19:47:28,714 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1193, PETRI_PLACES=407, PETRI_TRANSITIONS=399} [2022-11-18 19:47:28,715 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 33 predicate places. [2022-11-18 19:47:28,717 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 399 transitions, 1193 flow [2022-11-18 19:47:28,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 329.5) internal successors, (1977), 6 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:28,718 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:28,718 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:28,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:47:28,719 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:28,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:28,719 INFO L85 PathProgramCache]: Analyzing trace with hash 408232943, now seen corresponding path program 1 times [2022-11-18 19:47:28,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:28,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171629019] [2022-11-18 19:47:28,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:28,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:28,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:28,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:28,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171629019] [2022-11-18 19:47:28,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171629019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:28,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:28,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:47:28,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47511479] [2022-11-18 19:47:28,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:28,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:47:28,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:28,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:47:28,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:47:28,827 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-18 19:47:28,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 399 transitions, 1193 flow. Second operand has 4 states, 4 states have (on average 348.75) internal successors, (1395), 4 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:28,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:28,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-18 19:47:28,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:29,919 INFO L130 PetriNetUnfolder]: 727/3244 cut-off events. [2022-11-18 19:47:29,919 INFO L131 PetriNetUnfolder]: For 1116/1122 co-relation queries the response was YES. [2022-11-18 19:47:29,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5243 conditions, 3244 events. 727/3244 cut-off events. For 1116/1122 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 37502 event pairs, 288 based on Foata normal form. 26/2442 useless extension candidates. Maximal degree in co-relation 5141. Up to 629 conditions per place. [2022-11-18 19:47:29,980 INFO L137 encePairwiseOnDemand]: 403/412 looper letters, 62 selfloop transitions, 7 changer transitions 0/415 dead transitions. [2022-11-18 19:47:29,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 415 transitions, 1359 flow [2022-11-18 19:47:29,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:47:29,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:47:29,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1455 transitions. [2022-11-18 19:47:29,986 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8828883495145631 [2022-11-18 19:47:29,986 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1455 transitions. [2022-11-18 19:47:29,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1455 transitions. [2022-11-18 19:47:29,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:29,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1455 transitions. [2022-11-18 19:47:29,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 363.75) internal successors, (1455), 4 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:29,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:29,995 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:29,995 INFO L175 Difference]: Start difference. First operand has 407 places, 399 transitions, 1193 flow. Second operand 4 states and 1455 transitions. [2022-11-18 19:47:29,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 415 transitions, 1359 flow [2022-11-18 19:47:30,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 415 transitions, 1346 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:47:30,006 INFO L231 Difference]: Finished difference. Result has 408 places, 397 transitions, 1182 flow [2022-11-18 19:47:30,007 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1182, PETRI_PLACES=408, PETRI_TRANSITIONS=397} [2022-11-18 19:47:30,007 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 34 predicate places. [2022-11-18 19:47:30,007 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 397 transitions, 1182 flow [2022-11-18 19:47:30,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 348.75) internal successors, (1395), 4 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:30,008 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:30,008 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:30,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:47:30,009 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:30,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:30,009 INFO L85 PathProgramCache]: Analyzing trace with hash -229679462, now seen corresponding path program 1 times [2022-11-18 19:47:30,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:30,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464565708] [2022-11-18 19:47:30,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:30,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:30,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:30,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:30,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464565708] [2022-11-18 19:47:30,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464565708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:30,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:30,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:47:30,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447624523] [2022-11-18 19:47:30,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:30,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:47:30,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:30,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:47:30,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:47:30,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-18 19:47:30,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 397 transitions, 1182 flow. Second operand has 6 states, 6 states have (on average 348.5) internal successors, (2091), 6 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:30,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:30,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-18 19:47:30,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:31,561 INFO L130 PetriNetUnfolder]: 676/4093 cut-off events. [2022-11-18 19:47:31,562 INFO L131 PetriNetUnfolder]: For 1243/1243 co-relation queries the response was YES. [2022-11-18 19:47:31,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6691 conditions, 4093 events. 676/4093 cut-off events. For 1243/1243 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 42905 event pairs, 215 based on Foata normal form. 0/3371 useless extension candidates. Maximal degree in co-relation 5843. Up to 636 conditions per place. [2022-11-18 19:47:31,650 INFO L137 encePairwiseOnDemand]: 402/412 looper letters, 47 selfloop transitions, 10 changer transitions 0/405 dead transitions. [2022-11-18 19:47:31,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 405 transitions, 1318 flow [2022-11-18 19:47:31,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:47:31,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:47:31,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2479 transitions. [2022-11-18 19:47:31,654 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595700416088765 [2022-11-18 19:47:31,654 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2479 transitions. [2022-11-18 19:47:31,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2479 transitions. [2022-11-18 19:47:31,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:31,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2479 transitions. [2022-11-18 19:47:31,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.14285714285717) internal successors, (2479), 7 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:31,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:31,664 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:31,664 INFO L175 Difference]: Start difference. First operand has 408 places, 397 transitions, 1182 flow. Second operand 7 states and 2479 transitions. [2022-11-18 19:47:31,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 405 transitions, 1318 flow [2022-11-18 19:47:31,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 405 transitions, 1307 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:47:31,677 INFO L231 Difference]: Finished difference. Result has 411 places, 396 transitions, 1189 flow [2022-11-18 19:47:31,677 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1189, PETRI_PLACES=411, PETRI_TRANSITIONS=396} [2022-11-18 19:47:31,678 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 37 predicate places. [2022-11-18 19:47:31,678 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 396 transitions, 1189 flow [2022-11-18 19:47:31,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 348.5) internal successors, (2091), 6 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:31,679 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:31,679 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:31,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:47:31,680 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:31,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:31,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1117481005, now seen corresponding path program 1 times [2022-11-18 19:47:31,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:31,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50950830] [2022-11-18 19:47:31,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:31,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:31,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:31,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50950830] [2022-11-18 19:47:31,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50950830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:31,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:31,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:47:31,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289541874] [2022-11-18 19:47:31,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:31,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:47:31,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:31,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:47:31,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:47:31,815 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-18 19:47:31,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 396 transitions, 1189 flow. Second operand has 8 states, 8 states have (on average 338.125) internal successors, (2705), 8 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:31,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:31,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-18 19:47:31,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:33,233 INFO L130 PetriNetUnfolder]: 1056/4174 cut-off events. [2022-11-18 19:47:33,233 INFO L131 PetriNetUnfolder]: For 624/729 co-relation queries the response was YES. [2022-11-18 19:47:33,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7461 conditions, 4174 events. 1056/4174 cut-off events. For 624/729 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 47019 event pairs, 266 based on Foata normal form. 0/3332 useless extension candidates. Maximal degree in co-relation 6872. Up to 526 conditions per place. [2022-11-18 19:47:33,371 INFO L137 encePairwiseOnDemand]: 397/412 looper letters, 67 selfloop transitions, 16 changer transitions 0/420 dead transitions. [2022-11-18 19:47:33,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 420 transitions, 1424 flow [2022-11-18 19:47:33,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:47:33,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:47:33,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3778 transitions. [2022-11-18 19:47:33,376 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8336275375110327 [2022-11-18 19:47:33,376 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3778 transitions. [2022-11-18 19:47:33,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3778 transitions. [2022-11-18 19:47:33,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:33,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3778 transitions. [2022-11-18 19:47:33,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.45454545454544) internal successors, (3778), 11 states have internal predecessors, (3778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:33,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:33,391 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:33,391 INFO L175 Difference]: Start difference. First operand has 411 places, 396 transitions, 1189 flow. Second operand 11 states and 3778 transitions. [2022-11-18 19:47:33,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 420 transitions, 1424 flow [2022-11-18 19:47:33,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 420 transitions, 1404 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 19:47:33,403 INFO L231 Difference]: Finished difference. Result has 417 places, 397 transitions, 1214 flow [2022-11-18 19:47:33,404 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1214, PETRI_PLACES=417, PETRI_TRANSITIONS=397} [2022-11-18 19:47:33,404 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 43 predicate places. [2022-11-18 19:47:33,404 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 397 transitions, 1214 flow [2022-11-18 19:47:33,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 338.125) internal successors, (2705), 8 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:33,406 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:33,406 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:33,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 19:47:33,406 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:33,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:33,407 INFO L85 PathProgramCache]: Analyzing trace with hash 282173889, now seen corresponding path program 1 times [2022-11-18 19:47:33,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:33,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170745768] [2022-11-18 19:47:33,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:33,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:33,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:33,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:33,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170745768] [2022-11-18 19:47:33,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170745768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:33,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:33,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:47:33,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379279865] [2022-11-18 19:47:33,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:33,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:47:33,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:33,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:47:33,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:47:33,536 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-18 19:47:33,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 397 transitions, 1214 flow. Second operand has 8 states, 8 states have (on average 338.25) internal successors, (2706), 8 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:33,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:33,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-18 19:47:33,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:35,217 INFO L130 PetriNetUnfolder]: 959/5848 cut-off events. [2022-11-18 19:47:35,217 INFO L131 PetriNetUnfolder]: For 1221/1353 co-relation queries the response was YES. [2022-11-18 19:47:35,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9905 conditions, 5848 events. 959/5848 cut-off events. For 1221/1353 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 69177 event pairs, 205 based on Foata normal form. 0/4960 useless extension candidates. Maximal degree in co-relation 8382. Up to 526 conditions per place. [2022-11-18 19:47:35,389 INFO L137 encePairwiseOnDemand]: 396/412 looper letters, 69 selfloop transitions, 17 changer transitions 0/423 dead transitions. [2022-11-18 19:47:35,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 423 transitions, 1466 flow [2022-11-18 19:47:35,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:47:35,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:47:35,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3780 transitions. [2022-11-18 19:47:35,394 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8340688437775816 [2022-11-18 19:47:35,394 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3780 transitions. [2022-11-18 19:47:35,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3780 transitions. [2022-11-18 19:47:35,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:35,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3780 transitions. [2022-11-18 19:47:35,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.6363636363636) internal successors, (3780), 11 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:35,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:35,410 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:35,410 INFO L175 Difference]: Start difference. First operand has 417 places, 397 transitions, 1214 flow. Second operand 11 states and 3780 transitions. [2022-11-18 19:47:35,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 423 transitions, 1466 flow [2022-11-18 19:47:35,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 423 transitions, 1442 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-18 19:47:35,427 INFO L231 Difference]: Finished difference. Result has 423 places, 398 transitions, 1237 flow [2022-11-18 19:47:35,428 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1237, PETRI_PLACES=423, PETRI_TRANSITIONS=398} [2022-11-18 19:47:35,428 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 49 predicate places. [2022-11-18 19:47:35,429 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 398 transitions, 1237 flow [2022-11-18 19:47:35,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 338.25) internal successors, (2706), 8 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:35,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:35,430 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:35,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 19:47:35,430 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:35,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:35,431 INFO L85 PathProgramCache]: Analyzing trace with hash -803264419, now seen corresponding path program 1 times [2022-11-18 19:47:35,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:35,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43725557] [2022-11-18 19:47:35,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:35,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:35,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:35,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43725557] [2022-11-18 19:47:35,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43725557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:35,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:35,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:47:35,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453185640] [2022-11-18 19:47:35,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:35,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:47:35,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:35,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:47:35,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:47:35,493 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-18 19:47:35,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 398 transitions, 1237 flow. Second operand has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:35,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:35,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-18 19:47:35,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:37,024 INFO L130 PetriNetUnfolder]: 918/4207 cut-off events. [2022-11-18 19:47:37,024 INFO L131 PetriNetUnfolder]: For 1208/1214 co-relation queries the response was YES. [2022-11-18 19:47:37,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6592 conditions, 4207 events. 918/4207 cut-off events. For 1208/1214 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 49469 event pairs, 651 based on Foata normal form. 26/3204 useless extension candidates. Maximal degree in co-relation 6483. Up to 967 conditions per place. [2022-11-18 19:47:37,140 INFO L137 encePairwiseOnDemand]: 403/412 looper letters, 58 selfloop transitions, 7 changer transitions 0/415 dead transitions. [2022-11-18 19:47:37,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 415 transitions, 1404 flow [2022-11-18 19:47:37,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:47:37,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:47:37,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1450 transitions. [2022-11-18 19:47:37,144 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8798543689320388 [2022-11-18 19:47:37,144 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1450 transitions. [2022-11-18 19:47:37,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1450 transitions. [2022-11-18 19:47:37,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:37,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1450 transitions. [2022-11-18 19:47:37,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 362.5) internal successors, (1450), 4 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:37,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:37,151 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:37,152 INFO L175 Difference]: Start difference. First operand has 423 places, 398 transitions, 1237 flow. Second operand 4 states and 1450 transitions. [2022-11-18 19:47:37,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 415 transitions, 1404 flow [2022-11-18 19:47:37,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 415 transitions, 1374 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-18 19:47:37,165 INFO L231 Difference]: Finished difference. Result has 419 places, 399 transitions, 1237 flow [2022-11-18 19:47:37,166 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1237, PETRI_PLACES=419, PETRI_TRANSITIONS=399} [2022-11-18 19:47:37,166 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 45 predicate places. [2022-11-18 19:47:37,167 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 399 transitions, 1237 flow [2022-11-18 19:47:37,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:37,167 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:37,168 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:37,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 19:47:37,168 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:37,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:37,169 INFO L85 PathProgramCache]: Analyzing trace with hash 359150405, now seen corresponding path program 1 times [2022-11-18 19:47:37,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:37,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035539630] [2022-11-18 19:47:37,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:37,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:37,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:37,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:37,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035539630] [2022-11-18 19:47:37,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035539630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:37,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:37,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:47:37,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579714239] [2022-11-18 19:47:37,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:37,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:47:37,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:37,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:47:37,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:47:37,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 412 [2022-11-18 19:47:37,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 399 transitions, 1237 flow. Second operand has 6 states, 6 states have (on average 329.5) internal successors, (1977), 6 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:37,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:37,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 412 [2022-11-18 19:47:37,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:38,469 INFO L130 PetriNetUnfolder]: 470/1922 cut-off events. [2022-11-18 19:47:38,469 INFO L131 PetriNetUnfolder]: For 643/985 co-relation queries the response was YES. [2022-11-18 19:47:38,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3797 conditions, 1922 events. 470/1922 cut-off events. For 643/985 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 18768 event pairs, 244 based on Foata normal form. 5/1513 useless extension candidates. Maximal degree in co-relation 3611. Up to 566 conditions per place. [2022-11-18 19:47:38,574 INFO L137 encePairwiseOnDemand]: 395/412 looper letters, 74 selfloop transitions, 17 changer transitions 0/419 dead transitions. [2022-11-18 19:47:38,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 419 transitions, 1473 flow [2022-11-18 19:47:38,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:47:38,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:47:38,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2372 transitions. [2022-11-18 19:47:38,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8224687933425797 [2022-11-18 19:47:38,577 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2372 transitions. [2022-11-18 19:47:38,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2372 transitions. [2022-11-18 19:47:38,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:38,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2372 transitions. [2022-11-18 19:47:38,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 338.85714285714283) internal successors, (2372), 7 states have internal predecessors, (2372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:38,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:38,582 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:38,582 INFO L175 Difference]: Start difference. First operand has 419 places, 399 transitions, 1237 flow. Second operand 7 states and 2372 transitions. [2022-11-18 19:47:38,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 419 transitions, 1473 flow [2022-11-18 19:47:38,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 419 transitions, 1465 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:47:38,595 INFO L231 Difference]: Finished difference. Result has 427 places, 407 transitions, 1328 flow [2022-11-18 19:47:38,596 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1328, PETRI_PLACES=427, PETRI_TRANSITIONS=407} [2022-11-18 19:47:38,596 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 53 predicate places. [2022-11-18 19:47:38,596 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 407 transitions, 1328 flow [2022-11-18 19:47:38,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 329.5) internal successors, (1977), 6 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:38,597 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:38,597 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:38,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 19:47:38,598 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:38,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:38,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1024208014, now seen corresponding path program 1 times [2022-11-18 19:47:38,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:38,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491414127] [2022-11-18 19:47:38,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:38,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:38,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:38,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:38,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491414127] [2022-11-18 19:47:38,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491414127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:38,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:38,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:47:38,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988291065] [2022-11-18 19:47:38,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:38,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:47:38,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:38,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:47:38,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:47:38,716 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 412 [2022-11-18 19:47:38,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 407 transitions, 1328 flow. Second operand has 6 states, 6 states have (on average 329.6666666666667) internal successors, (1978), 6 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:38,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:38,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 412 [2022-11-18 19:47:38,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:39,872 INFO L130 PetriNetUnfolder]: 438/1892 cut-off events. [2022-11-18 19:47:39,872 INFO L131 PetriNetUnfolder]: For 925/1244 co-relation queries the response was YES. [2022-11-18 19:47:39,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3992 conditions, 1892 events. 438/1892 cut-off events. For 925/1244 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 18178 event pairs, 225 based on Foata normal form. 5/1568 useless extension candidates. Maximal degree in co-relation 3806. Up to 476 conditions per place. [2022-11-18 19:47:39,962 INFO L137 encePairwiseOnDemand]: 394/412 looper letters, 94 selfloop transitions, 20 changer transitions 0/442 dead transitions. [2022-11-18 19:47:39,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 442 transitions, 1685 flow [2022-11-18 19:47:39,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:47:39,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:47:39,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2386 transitions. [2022-11-18 19:47:39,965 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8273231622746186 [2022-11-18 19:47:39,966 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2386 transitions. [2022-11-18 19:47:39,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2386 transitions. [2022-11-18 19:47:39,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:39,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2386 transitions. [2022-11-18 19:47:39,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 340.85714285714283) internal successors, (2386), 7 states have internal predecessors, (2386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:39,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:39,973 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:39,974 INFO L175 Difference]: Start difference. First operand has 427 places, 407 transitions, 1328 flow. Second operand 7 states and 2386 transitions. [2022-11-18 19:47:39,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 442 transitions, 1685 flow [2022-11-18 19:47:39,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 442 transitions, 1673 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:47:39,988 INFO L231 Difference]: Finished difference. Result has 435 places, 418 transitions, 1454 flow [2022-11-18 19:47:39,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1454, PETRI_PLACES=435, PETRI_TRANSITIONS=418} [2022-11-18 19:47:39,989 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 61 predicate places. [2022-11-18 19:47:39,989 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 418 transitions, 1454 flow [2022-11-18 19:47:39,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 329.6666666666667) internal successors, (1978), 6 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:39,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:39,990 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:39,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 19:47:39,991 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:39,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:39,991 INFO L85 PathProgramCache]: Analyzing trace with hash -2097140865, now seen corresponding path program 1 times [2022-11-18 19:47:39,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:39,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926358200] [2022-11-18 19:47:39,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:39,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:40,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:40,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926358200] [2022-11-18 19:47:40,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926358200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:40,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:40,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:47:40,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613112420] [2022-11-18 19:47:40,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:40,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:47:40,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:40,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:47:40,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:47:40,118 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-18 19:47:40,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 418 transitions, 1454 flow. Second operand has 8 states, 8 states have (on average 338.25) internal successors, (2706), 8 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:40,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:40,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-18 19:47:40,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:41,871 INFO L130 PetriNetUnfolder]: 1054/5033 cut-off events. [2022-11-18 19:47:41,871 INFO L131 PetriNetUnfolder]: For 1791/1791 co-relation queries the response was YES. [2022-11-18 19:47:41,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8587 conditions, 5033 events. 1054/5033 cut-off events. For 1791/1791 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 56368 event pairs, 469 based on Foata normal form. 0/4041 useless extension candidates. Maximal degree in co-relation 7931. Up to 711 conditions per place. [2022-11-18 19:47:42,018 INFO L137 encePairwiseOnDemand]: 397/412 looper letters, 67 selfloop transitions, 16 changer transitions 0/442 dead transitions. [2022-11-18 19:47:42,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 442 transitions, 1682 flow [2022-11-18 19:47:42,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:47:42,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:47:42,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3778 transitions. [2022-11-18 19:47:42,022 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8336275375110327 [2022-11-18 19:47:42,022 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3778 transitions. [2022-11-18 19:47:42,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3778 transitions. [2022-11-18 19:47:42,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:42,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3778 transitions. [2022-11-18 19:47:42,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.45454545454544) internal successors, (3778), 11 states have internal predecessors, (3778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:42,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:42,033 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:42,034 INFO L175 Difference]: Start difference. First operand has 435 places, 418 transitions, 1454 flow. Second operand 11 states and 3778 transitions. [2022-11-18 19:47:42,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 442 transitions, 1682 flow [2022-11-18 19:47:42,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 442 transitions, 1674 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:47:42,051 INFO L231 Difference]: Finished difference. Result has 446 places, 419 transitions, 1491 flow [2022-11-18 19:47:42,052 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1491, PETRI_PLACES=446, PETRI_TRANSITIONS=419} [2022-11-18 19:47:42,052 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 72 predicate places. [2022-11-18 19:47:42,053 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 419 transitions, 1491 flow [2022-11-18 19:47:42,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 338.25) internal successors, (2706), 8 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:42,053 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:42,054 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:42,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 19:47:42,054 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:42,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:42,055 INFO L85 PathProgramCache]: Analyzing trace with hash -586856170, now seen corresponding path program 1 times [2022-11-18 19:47:42,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:42,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891717590] [2022-11-18 19:47:42,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:42,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:42,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:42,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:42,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891717590] [2022-11-18 19:47:42,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891717590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:42,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:42,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:47:42,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305152359] [2022-11-18 19:47:42,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:42,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:47:42,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:42,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:47:42,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:47:42,179 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-18 19:47:42,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 419 transitions, 1491 flow. Second operand has 8 states, 8 states have (on average 338.375) internal successors, (2707), 8 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:42,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:42,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-18 19:47:42,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:43,848 INFO L130 PetriNetUnfolder]: 924/4821 cut-off events. [2022-11-18 19:47:43,848 INFO L131 PetriNetUnfolder]: For 2037/2046 co-relation queries the response was YES. [2022-11-18 19:47:43,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8429 conditions, 4821 events. 924/4821 cut-off events. For 2037/2046 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 52723 event pairs, 460 based on Foata normal form. 9/4030 useless extension candidates. Maximal degree in co-relation 7769. Up to 621 conditions per place. [2022-11-18 19:47:43,984 INFO L137 encePairwiseOnDemand]: 396/412 looper letters, 69 selfloop transitions, 17 changer transitions 0/445 dead transitions. [2022-11-18 19:47:43,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 445 transitions, 1736 flow [2022-11-18 19:47:43,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:47:43,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:47:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3780 transitions. [2022-11-18 19:47:43,989 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8340688437775816 [2022-11-18 19:47:43,989 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3780 transitions. [2022-11-18 19:47:43,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3780 transitions. [2022-11-18 19:47:43,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:43,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3780 transitions. [2022-11-18 19:47:43,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.6363636363636) internal successors, (3780), 11 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:43,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:43,999 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:43,999 INFO L175 Difference]: Start difference. First operand has 446 places, 419 transitions, 1491 flow. Second operand 11 states and 3780 transitions. [2022-11-18 19:47:43,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 445 transitions, 1736 flow [2022-11-18 19:47:44,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 445 transitions, 1712 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-18 19:47:44,018 INFO L231 Difference]: Finished difference. Result has 452 places, 420 transitions, 1514 flow [2022-11-18 19:47:44,019 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1467, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1514, PETRI_PLACES=452, PETRI_TRANSITIONS=420} [2022-11-18 19:47:44,019 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 78 predicate places. [2022-11-18 19:47:44,019 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 420 transitions, 1514 flow [2022-11-18 19:47:44,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 338.375) internal successors, (2707), 8 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:44,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:44,020 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:44,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 19:47:44,021 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:44,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:44,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1555077574, now seen corresponding path program 1 times [2022-11-18 19:47:44,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:44,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610872934] [2022-11-18 19:47:44,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:44,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:44,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:44,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:44,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610872934] [2022-11-18 19:47:44,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610872934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:44,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:44,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:47:44,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101919713] [2022-11-18 19:47:44,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:44,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:47:44,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:44,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:47:44,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:47:44,133 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 412 [2022-11-18 19:47:44,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 420 transitions, 1514 flow. Second operand has 6 states, 6 states have (on average 329.6666666666667) internal successors, (1978), 6 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:44,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:44,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 412 [2022-11-18 19:47:44,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:45,884 INFO L130 PetriNetUnfolder]: 1398/4938 cut-off events. [2022-11-18 19:47:45,884 INFO L131 PetriNetUnfolder]: For 2357/2363 co-relation queries the response was YES. [2022-11-18 19:47:45,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9192 conditions, 4938 events. 1398/4938 cut-off events. For 2357/2363 co-relation queries the response was YES. Maximal size of possible extension queue 1044. Compared 62402 event pairs, 813 based on Foata normal form. 26/3788 useless extension candidates. Maximal degree in co-relation 9069. Up to 1567 conditions per place. [2022-11-18 19:47:45,967 INFO L137 encePairwiseOnDemand]: 395/412 looper letters, 73 selfloop transitions, 17 changer transitions 1/440 dead transitions. [2022-11-18 19:47:45,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 440 transitions, 1745 flow [2022-11-18 19:47:45,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:47:45,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:47:45,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2372 transitions. [2022-11-18 19:47:45,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8224687933425797 [2022-11-18 19:47:45,971 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2372 transitions. [2022-11-18 19:47:45,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2372 transitions. [2022-11-18 19:47:45,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:45,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2372 transitions. [2022-11-18 19:47:45,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 338.85714285714283) internal successors, (2372), 7 states have internal predecessors, (2372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:45,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:45,977 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:45,978 INFO L175 Difference]: Start difference. First operand has 452 places, 420 transitions, 1514 flow. Second operand 7 states and 2372 transitions. [2022-11-18 19:47:45,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 440 transitions, 1745 flow [2022-11-18 19:47:45,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 440 transitions, 1717 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-18 19:47:45,996 INFO L231 Difference]: Finished difference. Result has 455 places, 428 transitions, 1585 flow [2022-11-18 19:47:45,996 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1585, PETRI_PLACES=455, PETRI_TRANSITIONS=428} [2022-11-18 19:47:45,997 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 81 predicate places. [2022-11-18 19:47:45,997 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 428 transitions, 1585 flow [2022-11-18 19:47:45,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 329.6666666666667) internal successors, (1978), 6 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:45,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:45,998 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:45,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 19:47:45,998 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:45,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:45,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1515114197, now seen corresponding path program 1 times [2022-11-18 19:47:45,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:45,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104347143] [2022-11-18 19:47:45,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:45,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:46,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:46,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:46,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104347143] [2022-11-18 19:47:46,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104347143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:46,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:46,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:47:46,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529900855] [2022-11-18 19:47:46,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:46,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:47:46,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:46,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:47:46,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:47:46,079 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-18 19:47:46,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 428 transitions, 1585 flow. Second operand has 6 states, 6 states have (on average 349.1666666666667) internal successors, (2095), 6 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:46,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:46,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-18 19:47:46,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:47,428 INFO L130 PetriNetUnfolder]: 279/3218 cut-off events. [2022-11-18 19:47:47,428 INFO L131 PetriNetUnfolder]: For 1500/1779 co-relation queries the response was YES. [2022-11-18 19:47:47,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6586 conditions, 3218 events. 279/3218 cut-off events. For 1500/1779 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 29351 event pairs, 76 based on Foata normal form. 6/3182 useless extension candidates. Maximal degree in co-relation 6331. Up to 268 conditions per place. [2022-11-18 19:47:47,570 INFO L137 encePairwiseOnDemand]: 404/412 looper letters, 53 selfloop transitions, 8 changer transitions 0/439 dead transitions. [2022-11-18 19:47:47,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 439 transitions, 1743 flow [2022-11-18 19:47:47,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:47:47,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:47:47,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2479 transitions. [2022-11-18 19:47:47,574 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595700416088765 [2022-11-18 19:47:47,574 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2479 transitions. [2022-11-18 19:47:47,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2479 transitions. [2022-11-18 19:47:47,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:47,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2479 transitions. [2022-11-18 19:47:47,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.14285714285717) internal successors, (2479), 7 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:47,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:47,582 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:47,582 INFO L175 Difference]: Start difference. First operand has 455 places, 428 transitions, 1585 flow. Second operand 7 states and 2479 transitions. [2022-11-18 19:47:47,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 439 transitions, 1743 flow [2022-11-18 19:47:47,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 439 transitions, 1736 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:47:47,607 INFO L231 Difference]: Finished difference. Result has 459 places, 428 transitions, 1594 flow [2022-11-18 19:47:47,608 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1594, PETRI_PLACES=459, PETRI_TRANSITIONS=428} [2022-11-18 19:47:47,609 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 85 predicate places. [2022-11-18 19:47:47,609 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 428 transitions, 1594 flow [2022-11-18 19:47:47,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 349.1666666666667) internal successors, (2095), 6 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:47,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:47,610 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:47,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 19:47:47,610 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:47,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:47,611 INFO L85 PathProgramCache]: Analyzing trace with hash -235733116, now seen corresponding path program 1 times [2022-11-18 19:47:47,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:47,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205890643] [2022-11-18 19:47:47,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:47,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:47,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:47,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:47,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205890643] [2022-11-18 19:47:47,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205890643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:47,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:47,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:47:47,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475541718] [2022-11-18 19:47:47,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:47,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:47:47,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:47,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:47:47,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:47:47,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 412 [2022-11-18 19:47:47,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 428 transitions, 1594 flow. Second operand has 6 states, 6 states have (on average 329.8333333333333) internal successors, (1979), 6 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:47,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:47,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 412 [2022-11-18 19:47:47,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:49,535 INFO L130 PetriNetUnfolder]: 1302/4383 cut-off events. [2022-11-18 19:47:49,535 INFO L131 PetriNetUnfolder]: For 2599/2605 co-relation queries the response was YES. [2022-11-18 19:47:49,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9120 conditions, 4383 events. 1302/4383 cut-off events. For 2599/2605 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 57466 event pairs, 612 based on Foata normal form. 13/3417 useless extension candidates. Maximal degree in co-relation 8993. Up to 1317 conditions per place. [2022-11-18 19:47:49,632 INFO L137 encePairwiseOnDemand]: 394/412 looper letters, 93 selfloop transitions, 20 changer transitions 1/463 dead transitions. [2022-11-18 19:47:49,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 463 transitions, 1944 flow [2022-11-18 19:47:49,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:47:49,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:47:49,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2386 transitions. [2022-11-18 19:47:49,636 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8273231622746186 [2022-11-18 19:47:49,637 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2386 transitions. [2022-11-18 19:47:49,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2386 transitions. [2022-11-18 19:47:49,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:49,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2386 transitions. [2022-11-18 19:47:49,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 340.85714285714283) internal successors, (2386), 7 states have internal predecessors, (2386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:49,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:49,642 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:49,642 INFO L175 Difference]: Start difference. First operand has 459 places, 428 transitions, 1594 flow. Second operand 7 states and 2386 transitions. [2022-11-18 19:47:49,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 463 transitions, 1944 flow [2022-11-18 19:47:49,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 463 transitions, 1935 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:47:49,670 INFO L231 Difference]: Finished difference. Result has 465 places, 439 transitions, 1721 flow [2022-11-18 19:47:49,670 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1721, PETRI_PLACES=465, PETRI_TRANSITIONS=439} [2022-11-18 19:47:49,671 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 91 predicate places. [2022-11-18 19:47:49,671 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 439 transitions, 1721 flow [2022-11-18 19:47:49,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 329.8333333333333) internal successors, (1979), 6 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:49,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:49,672 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:49,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-18 19:47:49,673 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:49,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:49,673 INFO L85 PathProgramCache]: Analyzing trace with hash -300684201, now seen corresponding path program 1 times [2022-11-18 19:47:49,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:49,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645329258] [2022-11-18 19:47:49,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:49,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:49,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:49,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:49,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645329258] [2022-11-18 19:47:49,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645329258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:49,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:49,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:47:49,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86651806] [2022-11-18 19:47:49,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:49,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:47:49,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:49,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:47:49,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:47:49,770 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-18 19:47:49,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 439 transitions, 1721 flow. Second operand has 6 states, 6 states have (on average 349.3333333333333) internal successors, (2096), 6 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:49,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:49,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-18 19:47:49,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:53,305 INFO L130 PetriNetUnfolder]: 1433/11339 cut-off events. [2022-11-18 19:47:53,305 INFO L131 PetriNetUnfolder]: For 6994/7142 co-relation queries the response was YES. [2022-11-18 19:47:53,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23174 conditions, 11339 events. 1433/11339 cut-off events. For 6994/7142 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 152696 event pairs, 513 based on Foata normal form. 0/10295 useless extension candidates. Maximal degree in co-relation 22882. Up to 1113 conditions per place. [2022-11-18 19:47:53,517 INFO L137 encePairwiseOnDemand]: 404/412 looper letters, 53 selfloop transitions, 8 changer transitions 0/450 dead transitions. [2022-11-18 19:47:53,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 450 transitions, 1879 flow [2022-11-18 19:47:53,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:47:53,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:47:53,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2479 transitions. [2022-11-18 19:47:53,520 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595700416088765 [2022-11-18 19:47:53,520 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2479 transitions. [2022-11-18 19:47:53,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2479 transitions. [2022-11-18 19:47:53,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:53,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2479 transitions. [2022-11-18 19:47:53,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.14285714285717) internal successors, (2479), 7 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:53,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:53,527 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:53,527 INFO L175 Difference]: Start difference. First operand has 465 places, 439 transitions, 1721 flow. Second operand 7 states and 2479 transitions. [2022-11-18 19:47:53,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 450 transitions, 1879 flow [2022-11-18 19:47:53,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 450 transitions, 1871 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:47:53,625 INFO L231 Difference]: Finished difference. Result has 469 places, 439 transitions, 1729 flow [2022-11-18 19:47:53,625 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1711, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1729, PETRI_PLACES=469, PETRI_TRANSITIONS=439} [2022-11-18 19:47:53,626 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 95 predicate places. [2022-11-18 19:47:53,627 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 439 transitions, 1729 flow [2022-11-18 19:47:53,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 349.3333333333333) internal successors, (2096), 6 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:53,627 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:53,627 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:53,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-18 19:47:53,628 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:53,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:53,628 INFO L85 PathProgramCache]: Analyzing trace with hash -938614369, now seen corresponding path program 1 times [2022-11-18 19:47:53,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:53,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507066194] [2022-11-18 19:47:53,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:53,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:53,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:53,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507066194] [2022-11-18 19:47:53,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507066194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:53,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:53,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:47:53,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672871347] [2022-11-18 19:47:53,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:53,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:47:53,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:53,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:47:53,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:47:53,706 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-18 19:47:53,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 439 transitions, 1729 flow. Second operand has 6 states, 6 states have (on average 349.5) internal successors, (2097), 6 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:53,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:53,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-18 19:47:53,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:55,482 INFO L130 PetriNetUnfolder]: 276/3387 cut-off events. [2022-11-18 19:47:55,482 INFO L131 PetriNetUnfolder]: For 1736/2006 co-relation queries the response was YES. [2022-11-18 19:47:55,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7040 conditions, 3387 events. 276/3387 cut-off events. For 1736/2006 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 31350 event pairs, 106 based on Foata normal form. 6/3367 useless extension candidates. Maximal degree in co-relation 6754. Up to 248 conditions per place. [2022-11-18 19:47:55,604 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 49 selfloop transitions, 6 changer transitions 0/444 dead transitions. [2022-11-18 19:47:55,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 444 transitions, 1855 flow [2022-11-18 19:47:55,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:47:55,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:47:55,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2124 transitions. [2022-11-18 19:47:55,607 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8592233009708737 [2022-11-18 19:47:55,608 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2124 transitions. [2022-11-18 19:47:55,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2124 transitions. [2022-11-18 19:47:55,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:55,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2124 transitions. [2022-11-18 19:47:55,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:55,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 412.0) internal successors, (2884), 7 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:55,613 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 412.0) internal successors, (2884), 7 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:55,613 INFO L175 Difference]: Start difference. First operand has 469 places, 439 transitions, 1729 flow. Second operand 6 states and 2124 transitions. [2022-11-18 19:47:55,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 444 transitions, 1855 flow [2022-11-18 19:47:55,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 444 transitions, 1849 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:47:55,639 INFO L231 Difference]: Finished difference. Result has 470 places, 438 transitions, 1733 flow [2022-11-18 19:47:55,640 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1733, PETRI_PLACES=470, PETRI_TRANSITIONS=438} [2022-11-18 19:47:55,640 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 96 predicate places. [2022-11-18 19:47:55,640 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 438 transitions, 1733 flow [2022-11-18 19:47:55,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 349.5) internal successors, (2097), 6 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:55,641 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:55,641 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:55,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-18 19:47:55,642 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:55,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:55,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1672211799, now seen corresponding path program 1 times [2022-11-18 19:47:55,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:55,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729598266] [2022-11-18 19:47:55,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:55,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:55,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:55,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:55,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729598266] [2022-11-18 19:47:55,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729598266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:55,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:55,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:47:55,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950039234] [2022-11-18 19:47:55,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:55,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:47:55,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:55,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:47:55,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:47:55,883 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-18 19:47:55,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 438 transitions, 1733 flow. Second operand has 6 states, 6 states have (on average 349.5) internal successors, (2097), 6 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:55,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:55,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-18 19:47:55,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:58,545 INFO L130 PetriNetUnfolder]: 1683/7020 cut-off events. [2022-11-18 19:47:58,545 INFO L131 PetriNetUnfolder]: For 4998/6270 co-relation queries the response was YES. [2022-11-18 19:47:58,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14935 conditions, 7020 events. 1683/7020 cut-off events. For 4998/6270 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 82462 event pairs, 528 based on Foata normal form. 6/6006 useless extension candidates. Maximal degree in co-relation 14635. Up to 1450 conditions per place. [2022-11-18 19:47:58,691 INFO L137 encePairwiseOnDemand]: 404/412 looper letters, 57 selfloop transitions, 8 changer transitions 0/452 dead transitions. [2022-11-18 19:47:58,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 452 transitions, 1911 flow [2022-11-18 19:47:58,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:47:58,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:47:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2479 transitions. [2022-11-18 19:47:58,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595700416088765 [2022-11-18 19:47:58,694 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2479 transitions. [2022-11-18 19:47:58,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2479 transitions. [2022-11-18 19:47:58,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:58,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2479 transitions. [2022-11-18 19:47:58,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.14285714285717) internal successors, (2479), 7 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:58,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:58,700 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:58,701 INFO L175 Difference]: Start difference. First operand has 470 places, 438 transitions, 1733 flow. Second operand 7 states and 2479 transitions. [2022-11-18 19:47:58,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 452 transitions, 1911 flow [2022-11-18 19:47:58,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 452 transitions, 1900 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:47:58,744 INFO L231 Difference]: Finished difference. Result has 471 places, 438 transitions, 1738 flow [2022-11-18 19:47:58,745 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1738, PETRI_PLACES=471, PETRI_TRANSITIONS=438} [2022-11-18 19:47:58,745 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 97 predicate places. [2022-11-18 19:47:58,746 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 438 transitions, 1738 flow [2022-11-18 19:47:58,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 349.5) internal successors, (2097), 6 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:58,746 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:58,746 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:58,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-18 19:47:58,747 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:47:58,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:58,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1476131908, now seen corresponding path program 1 times [2022-11-18 19:47:58,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:58,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951015159] [2022-11-18 19:47:58,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:58,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:58,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:58,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:58,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951015159] [2022-11-18 19:47:58,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951015159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:58,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:58,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:47:58,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039374208] [2022-11-18 19:47:58,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:58,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:47:58,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:58,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:47:58,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:47:58,888 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-18 19:47:58,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 438 transitions, 1738 flow. Second operand has 8 states, 8 states have (on average 339.5) internal successors, (2716), 8 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:47:58,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:58,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-18 19:47:58,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:00,580 INFO L130 PetriNetUnfolder]: 374/3297 cut-off events. [2022-11-18 19:48:00,580 INFO L131 PetriNetUnfolder]: For 1644/2121 co-relation queries the response was YES. [2022-11-18 19:48:00,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7040 conditions, 3297 events. 374/3297 cut-off events. For 1644/2121 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 30495 event pairs, 86 based on Foata normal form. 31/3303 useless extension candidates. Maximal degree in co-relation 6751. Up to 188 conditions per place. [2022-11-18 19:48:00,694 INFO L137 encePairwiseOnDemand]: 398/412 looper letters, 65 selfloop transitions, 17 changer transitions 0/457 dead transitions. [2022-11-18 19:48:00,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 457 transitions, 1950 flow [2022-11-18 19:48:00,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:48:00,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:48:00,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3773 transitions. [2022-11-18 19:48:00,698 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8325242718446602 [2022-11-18 19:48:00,698 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3773 transitions. [2022-11-18 19:48:00,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3773 transitions. [2022-11-18 19:48:00,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:00,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3773 transitions. [2022-11-18 19:48:00,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.0) internal successors, (3773), 11 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:00,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:00,708 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:00,709 INFO L175 Difference]: Start difference. First operand has 471 places, 438 transitions, 1738 flow. Second operand 11 states and 3773 transitions. [2022-11-18 19:48:00,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 457 transitions, 1950 flow [2022-11-18 19:48:00,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 457 transitions, 1937 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:48:00,731 INFO L231 Difference]: Finished difference. Result has 476 places, 436 transitions, 1744 flow [2022-11-18 19:48:00,732 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1744, PETRI_PLACES=476, PETRI_TRANSITIONS=436} [2022-11-18 19:48:00,733 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 102 predicate places. [2022-11-18 19:48:00,733 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 436 transitions, 1744 flow [2022-11-18 19:48:00,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 339.5) internal successors, (2716), 8 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:00,734 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:00,734 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:00,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-18 19:48:00,734 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:48:00,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:00,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1759810817, now seen corresponding path program 1 times [2022-11-18 19:48:00,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:00,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530542405] [2022-11-18 19:48:00,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:00,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:00,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:00,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:00,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530542405] [2022-11-18 19:48:00,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530542405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:00,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:00,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:48:00,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746573201] [2022-11-18 19:48:00,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:00,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:48:00,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:00,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:48:00,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:48:00,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-18 19:48:00,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 436 transitions, 1744 flow. Second operand has 6 states, 6 states have (on average 349.6666666666667) internal successors, (2098), 6 states have internal predecessors, (2098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:00,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:00,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-18 19:48:00,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:04,465 INFO L130 PetriNetUnfolder]: 1406/10909 cut-off events. [2022-11-18 19:48:04,465 INFO L131 PetriNetUnfolder]: For 7153/7924 co-relation queries the response was YES. [2022-11-18 19:48:04,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22176 conditions, 10909 events. 1406/10909 cut-off events. For 7153/7924 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 145878 event pairs, 798 based on Foata normal form. 47/10191 useless extension candidates. Maximal degree in co-relation 21869. Up to 1029 conditions per place. [2022-11-18 19:48:04,652 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 52 selfloop transitions, 6 changer transitions 0/443 dead transitions. [2022-11-18 19:48:04,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 443 transitions, 1886 flow [2022-11-18 19:48:04,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:48:04,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:48:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2124 transitions. [2022-11-18 19:48:04,657 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8592233009708737 [2022-11-18 19:48:04,657 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2124 transitions. [2022-11-18 19:48:04,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2124 transitions. [2022-11-18 19:48:04,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:04,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2124 transitions. [2022-11-18 19:48:04,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:04,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 412.0) internal successors, (2884), 7 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:04,665 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 412.0) internal successors, (2884), 7 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:04,665 INFO L175 Difference]: Start difference. First operand has 476 places, 436 transitions, 1744 flow. Second operand 6 states and 2124 transitions. [2022-11-18 19:48:04,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 443 transitions, 1886 flow [2022-11-18 19:48:04,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 443 transitions, 1849 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-11-18 19:48:04,746 INFO L231 Difference]: Finished difference. Result has 471 places, 435 transitions, 1717 flow [2022-11-18 19:48:04,747 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1705, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1717, PETRI_PLACES=471, PETRI_TRANSITIONS=435} [2022-11-18 19:48:04,748 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 97 predicate places. [2022-11-18 19:48:04,748 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 435 transitions, 1717 flow [2022-11-18 19:48:04,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 349.6666666666667) internal successors, (2098), 6 states have internal predecessors, (2098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:04,749 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:04,749 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:04,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-18 19:48:04,749 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:48:04,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:04,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1484550059, now seen corresponding path program 1 times [2022-11-18 19:48:04,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:04,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057749411] [2022-11-18 19:48:04,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:04,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:04,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:04,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:04,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057749411] [2022-11-18 19:48:04,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057749411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:04,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:04,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:48:04,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152291330] [2022-11-18 19:48:04,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:04,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:48:04,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:04,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:48:04,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:48:04,909 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-18 19:48:04,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 435 transitions, 1717 flow. Second operand has 8 states, 8 states have (on average 339.625) internal successors, (2717), 8 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:04,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:04,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-18 19:48:04,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:06,967 INFO L130 PetriNetUnfolder]: 328/3610 cut-off events. [2022-11-18 19:48:06,967 INFO L131 PetriNetUnfolder]: For 1804/2182 co-relation queries the response was YES. [2022-11-18 19:48:07,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7560 conditions, 3610 events. 328/3610 cut-off events. For 1804/2182 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 34335 event pairs, 86 based on Foata normal form. 28/3622 useless extension candidates. Maximal degree in co-relation 7274. Up to 209 conditions per place. [2022-11-18 19:48:07,078 INFO L137 encePairwiseOnDemand]: 398/412 looper letters, 66 selfloop transitions, 17 changer transitions 0/457 dead transitions. [2022-11-18 19:48:07,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 457 transitions, 1951 flow [2022-11-18 19:48:07,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:48:07,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:48:07,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3774 transitions. [2022-11-18 19:48:07,082 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8327449249779347 [2022-11-18 19:48:07,082 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3774 transitions. [2022-11-18 19:48:07,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3774 transitions. [2022-11-18 19:48:07,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:07,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3774 transitions. [2022-11-18 19:48:07,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.09090909090907) internal successors, (3774), 11 states have internal predecessors, (3774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:07,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:07,092 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:07,092 INFO L175 Difference]: Start difference. First operand has 471 places, 435 transitions, 1717 flow. Second operand 11 states and 3774 transitions. [2022-11-18 19:48:07,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 457 transitions, 1951 flow [2022-11-18 19:48:07,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 457 transitions, 1933 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:48:07,118 INFO L231 Difference]: Finished difference. Result has 475 places, 434 transitions, 1729 flow [2022-11-18 19:48:07,119 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1695, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1729, PETRI_PLACES=475, PETRI_TRANSITIONS=434} [2022-11-18 19:48:07,119 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 101 predicate places. [2022-11-18 19:48:07,119 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 434 transitions, 1729 flow [2022-11-18 19:48:07,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 339.625) internal successors, (2717), 8 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:07,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:07,120 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:07,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-18 19:48:07,121 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread3Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:48:07,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:07,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1512207053, now seen corresponding path program 1 times [2022-11-18 19:48:07,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:07,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747023169] [2022-11-18 19:48:07,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:07,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:07,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:07,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747023169] [2022-11-18 19:48:07,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747023169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:07,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:07,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:48:07,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572403091] [2022-11-18 19:48:07,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:07,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:48:07,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:07,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:48:07,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:48:07,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-18 19:48:07,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 434 transitions, 1729 flow. Second operand has 6 states, 6 states have (on average 349.8333333333333) internal successors, (2099), 6 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:07,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:07,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-18 19:48:07,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:09,732 INFO L130 PetriNetUnfolder]: 1650/6876 cut-off events. [2022-11-18 19:48:09,732 INFO L131 PetriNetUnfolder]: For 5249/6500 co-relation queries the response was YES. [2022-11-18 19:48:09,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14799 conditions, 6876 events. 1650/6876 cut-off events. For 5249/6500 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 81316 event pairs, 705 based on Foata normal form. 6/5901 useless extension candidates. Maximal degree in co-relation 14503. Up to 1334 conditions per place. [2022-11-18 19:48:09,887 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 52 selfloop transitions, 6 changer transitions 0/441 dead transitions. [2022-11-18 19:48:09,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 441 transitions, 1869 flow [2022-11-18 19:48:09,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:48:09,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:48:09,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2124 transitions. [2022-11-18 19:48:09,890 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8592233009708737 [2022-11-18 19:48:09,890 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2124 transitions. [2022-11-18 19:48:09,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2124 transitions. [2022-11-18 19:48:09,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:09,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2124 transitions. [2022-11-18 19:48:09,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:09,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 412.0) internal successors, (2884), 7 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:09,899 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 412.0) internal successors, (2884), 7 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:09,899 INFO L175 Difference]: Start difference. First operand has 475 places, 434 transitions, 1729 flow. Second operand 6 states and 2124 transitions. [2022-11-18 19:48:09,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 441 transitions, 1869 flow [2022-11-18 19:48:09,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 441 transitions, 1832 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-11-18 19:48:09,954 INFO L231 Difference]: Finished difference. Result has 470 places, 433 transitions, 1702 flow [2022-11-18 19:48:09,955 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1702, PETRI_PLACES=470, PETRI_TRANSITIONS=433} [2022-11-18 19:48:09,956 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 96 predicate places. [2022-11-18 19:48:09,956 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 433 transitions, 1702 flow [2022-11-18 19:48:09,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 349.8333333333333) internal successors, (2099), 6 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:09,956 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:09,957 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:09,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-18 19:48:09,957 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:48:09,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:09,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1904352454, now seen corresponding path program 1 times [2022-11-18 19:48:09,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:09,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86302481] [2022-11-18 19:48:09,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:09,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:10,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:10,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:10,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86302481] [2022-11-18 19:48:10,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86302481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:10,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:10,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:48:10,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553851781] [2022-11-18 19:48:10,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:10,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:48:10,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:10,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:48:10,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:48:10,111 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-18 19:48:10,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 433 transitions, 1702 flow. Second operand has 8 states, 8 states have (on average 339.625) internal successors, (2717), 8 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:10,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:10,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-18 19:48:10,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:13,540 INFO L130 PetriNetUnfolder]: 1882/10631 cut-off events. [2022-11-18 19:48:13,541 INFO L131 PetriNetUnfolder]: For 8929/9886 co-relation queries the response was YES. [2022-11-18 19:48:13,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23198 conditions, 10631 events. 1882/10631 cut-off events. For 8929/9886 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 141303 event pairs, 434 based on Foata normal form. 36/9699 useless extension candidates. Maximal degree in co-relation 22914. Up to 855 conditions per place. [2022-11-18 19:48:13,709 INFO L137 encePairwiseOnDemand]: 398/412 looper letters, 73 selfloop transitions, 17 changer transitions 0/459 dead transitions. [2022-11-18 19:48:13,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 459 transitions, 1993 flow [2022-11-18 19:48:13,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:48:13,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:48:13,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3773 transitions. [2022-11-18 19:48:13,713 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8325242718446602 [2022-11-18 19:48:13,713 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3773 transitions. [2022-11-18 19:48:13,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3773 transitions. [2022-11-18 19:48:13,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:13,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3773 transitions. [2022-11-18 19:48:13,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.0) internal successors, (3773), 11 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:13,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:13,723 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:13,723 INFO L175 Difference]: Start difference. First operand has 470 places, 433 transitions, 1702 flow. Second operand 11 states and 3773 transitions. [2022-11-18 19:48:13,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 459 transitions, 1993 flow [2022-11-18 19:48:13,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 459 transitions, 1947 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:48:13,805 INFO L231 Difference]: Finished difference. Result has 474 places, 431 transitions, 1703 flow [2022-11-18 19:48:13,806 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1703, PETRI_PLACES=474, PETRI_TRANSITIONS=431} [2022-11-18 19:48:13,806 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 100 predicate places. [2022-11-18 19:48:13,806 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 431 transitions, 1703 flow [2022-11-18 19:48:13,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 339.625) internal successors, (2717), 8 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:13,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:13,807 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:13,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-18 19:48:13,808 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:48:13,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:13,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1094614918, now seen corresponding path program 1 times [2022-11-18 19:48:13,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:13,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934311907] [2022-11-18 19:48:13,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:13,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:13,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:13,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:13,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934311907] [2022-11-18 19:48:13,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934311907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:13,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:13,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:48:13,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354572575] [2022-11-18 19:48:13,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:13,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:48:13,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:13,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:48:13,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:48:13,943 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-18 19:48:13,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 431 transitions, 1703 flow. Second operand has 8 states, 8 states have (on average 339.75) internal successors, (2718), 8 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:13,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:13,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-18 19:48:13,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:18,440 INFO L130 PetriNetUnfolder]: 1688/14176 cut-off events. [2022-11-18 19:48:18,441 INFO L131 PetriNetUnfolder]: For 9411/10231 co-relation queries the response was YES. [2022-11-18 19:48:18,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29415 conditions, 14176 events. 1688/14176 cut-off events. For 9411/10231 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 196945 event pairs, 575 based on Foata normal form. 36/13370 useless extension candidates. Maximal degree in co-relation 29132. Up to 1053 conditions per place. [2022-11-18 19:48:18,717 INFO L137 encePairwiseOnDemand]: 398/412 looper letters, 74 selfloop transitions, 17 changer transitions 0/460 dead transitions. [2022-11-18 19:48:18,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 460 transitions, 1990 flow [2022-11-18 19:48:18,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:48:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:48:18,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3774 transitions. [2022-11-18 19:48:18,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8327449249779347 [2022-11-18 19:48:18,721 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3774 transitions. [2022-11-18 19:48:18,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3774 transitions. [2022-11-18 19:48:18,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:18,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3774 transitions. [2022-11-18 19:48:18,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.09090909090907) internal successors, (3774), 11 states have internal predecessors, (3774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:18,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:18,731 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:18,731 INFO L175 Difference]: Start difference. First operand has 474 places, 431 transitions, 1703 flow. Second operand 11 states and 3774 transitions. [2022-11-18 19:48:18,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 460 transitions, 1990 flow [2022-11-18 19:48:18,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 460 transitions, 1944 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-11-18 19:48:18,887 INFO L231 Difference]: Finished difference. Result has 473 places, 430 transitions, 1689 flow [2022-11-18 19:48:18,888 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1689, PETRI_PLACES=473, PETRI_TRANSITIONS=430} [2022-11-18 19:48:18,888 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 99 predicate places. [2022-11-18 19:48:18,889 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 430 transitions, 1689 flow [2022-11-18 19:48:18,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 339.75) internal successors, (2718), 8 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:18,889 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:18,890 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:18,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-18 19:48:18,890 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:48:18,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:18,897 INFO L85 PathProgramCache]: Analyzing trace with hash 678929944, now seen corresponding path program 1 times [2022-11-18 19:48:18,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:18,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772873613] [2022-11-18 19:48:18,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:18,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:19,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:19,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:19,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772873613] [2022-11-18 19:48:19,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772873613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:19,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:19,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:48:19,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787402989] [2022-11-18 19:48:19,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:19,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:48:19,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:19,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:48:19,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:48:19,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-18 19:48:19,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 430 transitions, 1689 flow. Second operand has 8 states, 8 states have (on average 339.75) internal successors, (2718), 8 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:19,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:19,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-18 19:48:19,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:22,861 INFO L130 PetriNetUnfolder]: 2396/11388 cut-off events. [2022-11-18 19:48:22,861 INFO L131 PetriNetUnfolder]: For 10000/13255 co-relation queries the response was YES. [2022-11-18 19:48:23,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24807 conditions, 11388 events. 2396/11388 cut-off events. For 10000/13255 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 148679 event pairs, 840 based on Foata normal form. 56/10134 useless extension candidates. Maximal degree in co-relation 24526. Up to 1031 conditions per place. [2022-11-18 19:48:23,039 INFO L137 encePairwiseOnDemand]: 398/412 looper letters, 73 selfloop transitions, 17 changer transitions 0/456 dead transitions. [2022-11-18 19:48:23,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 456 transitions, 1973 flow [2022-11-18 19:48:23,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:48:23,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:48:23,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3773 transitions. [2022-11-18 19:48:23,044 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8325242718446602 [2022-11-18 19:48:23,044 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3773 transitions. [2022-11-18 19:48:23,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3773 transitions. [2022-11-18 19:48:23,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:23,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3773 transitions. [2022-11-18 19:48:23,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.0) internal successors, (3773), 11 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:23,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:23,053 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:23,053 INFO L175 Difference]: Start difference. First operand has 473 places, 430 transitions, 1689 flow. Second operand 11 states and 3773 transitions. [2022-11-18 19:48:23,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 456 transitions, 1973 flow [2022-11-18 19:48:23,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 456 transitions, 1901 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-11-18 19:48:23,115 INFO L231 Difference]: Finished difference. Result has 472 places, 428 transitions, 1664 flow [2022-11-18 19:48:23,115 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1664, PETRI_PLACES=472, PETRI_TRANSITIONS=428} [2022-11-18 19:48:23,116 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 98 predicate places. [2022-11-18 19:48:23,116 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 428 transitions, 1664 flow [2022-11-18 19:48:23,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 339.75) internal successors, (2718), 8 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:23,116 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:23,117 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:23,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-18 19:48:23,117 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-18 19:48:23,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:23,118 INFO L85 PathProgramCache]: Analyzing trace with hash -428006961, now seen corresponding path program 1 times [2022-11-18 19:48:23,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:23,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714366657] [2022-11-18 19:48:23,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:23,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:23,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:23,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714366657] [2022-11-18 19:48:23,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714366657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:23,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:23,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:48:23,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438677737] [2022-11-18 19:48:23,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:23,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:48:23,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:23,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:48:23,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:48:23,248 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-18 19:48:23,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 428 transitions, 1664 flow. Second operand has 8 states, 8 states have (on average 339.875) internal successors, (2719), 8 states have internal predecessors, (2719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:23,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:23,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-18 19:48:23,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:26,130 INFO L130 PetriNetUnfolder]: 2022/9092 cut-off events. [2022-11-18 19:48:26,130 INFO L131 PetriNetUnfolder]: For 7269/8922 co-relation queries the response was YES. [2022-11-18 19:48:26,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19805 conditions, 9092 events. 2022/9092 cut-off events. For 7269/8922 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 111303 event pairs, 699 based on Foata normal form. 56/7982 useless extension candidates. Maximal degree in co-relation 19526. Up to 1031 conditions per place. [2022-11-18 19:48:26,258 INFO L137 encePairwiseOnDemand]: 398/412 looper letters, 0 selfloop transitions, 0 changer transitions 457/457 dead transitions. [2022-11-18 19:48:26,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 457 transitions, 1944 flow [2022-11-18 19:48:26,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:48:26,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:48:26,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3774 transitions. [2022-11-18 19:48:26,261 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8327449249779347 [2022-11-18 19:48:26,261 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3774 transitions. [2022-11-18 19:48:26,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3774 transitions. [2022-11-18 19:48:26,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:26,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3774 transitions. [2022-11-18 19:48:26,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.09090909090907) internal successors, (3774), 11 states have internal predecessors, (3774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:26,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:26,270 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:26,271 INFO L175 Difference]: Start difference. First operand has 472 places, 428 transitions, 1664 flow. Second operand 11 states and 3774 transitions. [2022-11-18 19:48:26,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 457 transitions, 1944 flow [2022-11-18 19:48:26,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 457 transitions, 1898 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-11-18 19:48:26,322 INFO L231 Difference]: Finished difference. Result has 471 places, 0 transitions, 0 flow [2022-11-18 19:48:26,322 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1616, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=471, PETRI_TRANSITIONS=0} [2022-11-18 19:48:26,322 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 97 predicate places. [2022-11-18 19:48:26,323 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 0 transitions, 0 flow [2022-11-18 19:48:26,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 339.875) internal successors, (2719), 8 states have internal predecessors, (2719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:26,325 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (74 of 75 remaining) [2022-11-18 19:48:26,326 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (73 of 75 remaining) [2022-11-18 19:48:26,327 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (72 of 75 remaining) [2022-11-18 19:48:26,327 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (71 of 75 remaining) [2022-11-18 19:48:26,327 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (70 of 75 remaining) [2022-11-18 19:48:26,327 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (69 of 75 remaining) [2022-11-18 19:48:26,328 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (68 of 75 remaining) [2022-11-18 19:48:26,328 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (67 of 75 remaining) [2022-11-18 19:48:26,328 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (66 of 75 remaining) [2022-11-18 19:48:26,328 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (65 of 75 remaining) [2022-11-18 19:48:26,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (64 of 75 remaining) [2022-11-18 19:48:26,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (63 of 75 remaining) [2022-11-18 19:48:26,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (62 of 75 remaining) [2022-11-18 19:48:26,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (61 of 75 remaining) [2022-11-18 19:48:26,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (60 of 75 remaining) [2022-11-18 19:48:26,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 75 remaining) [2022-11-18 19:48:26,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 75 remaining) [2022-11-18 19:48:26,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 75 remaining) [2022-11-18 19:48:26,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 75 remaining) [2022-11-18 19:48:26,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 75 remaining) [2022-11-18 19:48:26,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 75 remaining) [2022-11-18 19:48:26,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 75 remaining) [2022-11-18 19:48:26,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 75 remaining) [2022-11-18 19:48:26,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 75 remaining) [2022-11-18 19:48:26,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 75 remaining) [2022-11-18 19:48:26,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 75 remaining) [2022-11-18 19:48:26,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 75 remaining) [2022-11-18 19:48:26,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 75 remaining) [2022-11-18 19:48:26,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 75 remaining) [2022-11-18 19:48:26,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 75 remaining) [2022-11-18 19:48:26,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 75 remaining) [2022-11-18 19:48:26,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 75 remaining) [2022-11-18 19:48:26,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 75 remaining) [2022-11-18 19:48:26,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 75 remaining) [2022-11-18 19:48:26,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 75 remaining) [2022-11-18 19:48:26,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 75 remaining) [2022-11-18 19:48:26,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (38 of 75 remaining) [2022-11-18 19:48:26,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 75 remaining) [2022-11-18 19:48:26,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 75 remaining) [2022-11-18 19:48:26,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 75 remaining) [2022-11-18 19:48:26,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 75 remaining) [2022-11-18 19:48:26,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 75 remaining) [2022-11-18 19:48:26,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 75 remaining) [2022-11-18 19:48:26,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 75 remaining) [2022-11-18 19:48:26,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 75 remaining) [2022-11-18 19:48:26,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 75 remaining) [2022-11-18 19:48:26,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 75 remaining) [2022-11-18 19:48:26,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 75 remaining) [2022-11-18 19:48:26,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 75 remaining) [2022-11-18 19:48:26,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 75 remaining) [2022-11-18 19:48:26,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 75 remaining) [2022-11-18 19:48:26,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 75 remaining) [2022-11-18 19:48:26,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 75 remaining) [2022-11-18 19:48:26,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 75 remaining) [2022-11-18 19:48:26,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 75 remaining) [2022-11-18 19:48:26,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 75 remaining) [2022-11-18 19:48:26,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 75 remaining) [2022-11-18 19:48:26,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 75 remaining) [2022-11-18 19:48:26,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 75 remaining) [2022-11-18 19:48:26,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 75 remaining) [2022-11-18 19:48:26,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 75 remaining) [2022-11-18 19:48:26,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 75 remaining) [2022-11-18 19:48:26,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 75 remaining) [2022-11-18 19:48:26,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 75 remaining) [2022-11-18 19:48:26,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 75 remaining) [2022-11-18 19:48:26,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 75 remaining) [2022-11-18 19:48:26,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 75 remaining) [2022-11-18 19:48:26,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 75 remaining) [2022-11-18 19:48:26,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 75 remaining) [2022-11-18 19:48:26,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 75 remaining) [2022-11-18 19:48:26,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 75 remaining) [2022-11-18 19:48:26,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 75 remaining) [2022-11-18 19:48:26,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 75 remaining) [2022-11-18 19:48:26,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 75 remaining) [2022-11-18 19:48:26,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 75 remaining) [2022-11-18 19:48:26,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-18 19:48:26,344 INFO L444 BasicCegarLoop]: Path program 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] [2022-11-18 19:48:26,350 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 19:48:26,350 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 19:48:26,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 07:48:26 BasicIcfg [2022-11-18 19:48:26,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 19:48:26,356 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 19:48:26,356 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 19:48:26,356 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 19:48:26,357 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:47:10" (3/4) ... [2022-11-18 19:48:26,359 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 19:48:26,365 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 19:48:26,365 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 19:48:26,366 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-18 19:48:26,370 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-18 19:48:26,370 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 19:48:26,371 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 19:48:26,371 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 19:48:26,403 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18749b61-1bd9-40d7-88e1-34047c3f4e86/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 19:48:26,403 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 19:48:26,404 INFO L158 Benchmark]: Toolchain (without parser) took 76863.41ms. Allocated memory was 157.3MB in the beginning and 12.2GB in the end (delta: 12.1GB). Free memory was 122.9MB in the beginning and 9.8GB in the end (delta: -9.7GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. [2022-11-18 19:48:26,404 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 88.1MB. Free memory was 60.7MB in the beginning and 60.6MB in the end (delta: 25.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:48:26,405 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.31ms. Allocated memory is still 157.3MB. Free memory was 122.9MB in the beginning and 132.0MB in the end (delta: -9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 19:48:26,405 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.03ms. Allocated memory is still 157.3MB. Free memory was 132.0MB in the beginning and 129.2MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 19:48:26,405 INFO L158 Benchmark]: Boogie Preprocessor took 56.36ms. Allocated memory is still 157.3MB. Free memory was 129.2MB in the beginning and 127.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:48:26,406 INFO L158 Benchmark]: RCFGBuilder took 920.81ms. Allocated memory is still 157.3MB. Free memory was 127.5MB in the beginning and 99.8MB in the end (delta: 27.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-18 19:48:26,406 INFO L158 Benchmark]: TraceAbstraction took 75489.27ms. Allocated memory was 157.3MB in the beginning and 12.2GB in the end (delta: 12.1GB). Free memory was 98.9MB in the beginning and 9.8GB in the end (delta: -9.7GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. [2022-11-18 19:48:26,406 INFO L158 Benchmark]: Witness Printer took 47.83ms. Allocated memory is still 12.2GB. Free memory was 9.8GB in the beginning and 9.8GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:48:26,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 88.1MB. Free memory was 60.7MB in the beginning and 60.6MB in the end (delta: 25.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.31ms. Allocated memory is still 157.3MB. Free memory was 122.9MB in the beginning and 132.0MB in the end (delta: -9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.03ms. Allocated memory is still 157.3MB. Free memory was 132.0MB in the beginning and 129.2MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.36ms. Allocated memory is still 157.3MB. Free memory was 129.2MB in the beginning and 127.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 920.81ms. Allocated memory is still 157.3MB. Free memory was 127.5MB in the beginning and 99.8MB in the end (delta: 27.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 75489.27ms. Allocated memory was 157.3MB in the beginning and 12.2GB in the end (delta: 12.1GB). Free memory was 98.9MB in the beginning and 9.8GB in the end (delta: -9.7GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. * Witness Printer took 47.83ms. Allocated memory is still 12.2GB. Free memory was 9.8GB in the beginning and 9.8GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 94]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 94]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 94]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 94]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 94]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 94]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 94]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 94]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 94]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 94]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 94]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 94]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 679 locations, 75 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 75.2s, OverallIterations: 39, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 69.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3443 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3443 mSDsluCounter, 2830 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1678 mSDsCounter, 257 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5334 IncrementalHoareTripleChecker+Invalid, 5591 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 257 mSolverCounterUnsat, 1152 mSDtfsCounter, 5334 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 354 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1744occurred in iteration=32, InterpolantAutomatonStates: 291, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 3672 NumberOfCodeBlocks, 3672 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 3633 ConstructedInterpolants, 0 QuantifiedInterpolants, 8793 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 39 InterpolantComputations, 39 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 36 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 19:48:26,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18749b61-1bd9-40d7-88e1-34047c3f4e86/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE